Rules Contributing to Suspicious Process Creation Commandline Alert

The following rules are used to identify suspicious activity relating to command-line process creation. Any one or more of these will trigger the Suspicious Process Creation Alert. Details for each rule can be viewed by clicking the More Details link in the description.

Title

Description

SystemNightmare Exploitation Script Execution

Detects the exploitation of PrinterNightmare to get a shell as LOCAL_SYSTEM

Rule ID

process_creation_commandline_1

Query

{'selection': {'CommandLine|contains': ['printnightmare.gentilkiwi.com', ' /user:gentilguest ', 'Kiwi Legit Printer']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c01f7bd6-0c1d-47aa-9c61-187b91273a16

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1068

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/11 critical

  • Unknown

Suspicious Reg Add Open Command

Threat actors performed dumping of SAM, SECURITY and SYSTEM registry hives using DelegateExecute key

Rule ID

process_creation_commandline_2

Query

{'selection_1': {'CommandLine|contains|all': ['reg', 'add', 'hkcu\\software\\classes\\ms-settings\\shell\\open\\command', '/ve ', '/d']}, 'selection_2': {'CommandLine|contains|all': ['reg', 'add', 'hkcu\\software\\classes\\ms-settings\\shell\\open\\command', '/v', 'DelegateExecute']}, 'selection_3': {'CommandLine|contains|all': ['reg', 'delete', 'hkcu\\software\\classes\\ms-settings']}, 'condition': '1 of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,dd3ee8cc-f751-41c9-ba53-5a32ed47e563

Author: frack113

Tactics, Techniques, and Procedures

T1003, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/12/20 medium

  • Unknown

CL_LoadAssembly.ps1 Proxy Execution

Detects the use of a Microsoft signed script to execute commands and bypassing AppLocker.

Rule ID

process_creation_commandline_3

Query

{'selection': {'CommandLine|contains': ['\\CL_LoadAssembly.ps1', 'LoadAssemblyFromPath ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c57872c7-614f-4d7f-a40d-b78c8df2d30d

Author: frack113, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1216

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/05/21 medium

  • Unknown

Suspicious Characters in CommandLine

Detects suspicious Unicode characters in the command line, which could be a sign of obfuscation or defense evasion

Rule ID

process_creation_commandline_4

Query

{'selection_spacing_modifiers': {'CommandLine|contains': ['ˣ', '˪', 'ˢ']}, 'selection_unicode_slashes': {'CommandLine|contains': ['∕', '⁄']}, 'selection_unicode_hyphens': {'CommandLine|contains': ['―', '—']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2c0d2d7b-30d6-4d14-9751-7b9113042ab9

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/04/27 high

  • Unknown

Firewall Disabled via Netsh.EXE

Detects netsh commands that turns off the Windows firewall

Rule ID

process_creation_commandline_5

Query

{'selection_img': [{'Image|endswith': '\\netsh.exe'}, {'OriginalFileName': 'netsh.exe'}], 'selection_cli_1': {'CommandLine|contains|all': ['firewall', 'set', 'opmode', 'disable']}, 'selection_cli_2': {'CommandLine|contains|all': ['advfirewall', 'set', 'state', 'off']}, 'condition': 'selection_img and 1 of selection_cli_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,57c4bf16-227f-4394-8ec7-1b745ee061c3

Author: Fatih Sirin

Tactics, Techniques, and Procedures

T1059.003, T1562.004

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/11/01 medium

  • Legitimate administration activity

Ke3chang Registry Key Modifications

Detects Registry modifications performed by Ke3chang malware in campaigns running in 2019 and 2020

Rule ID

process_creation_commandline_6

Query

{'selection1': {'CommandLine|contains': ['-Property DWORD -name DisableFirstRunCustomize -value 2 -Force', '-Property String -name Check_Associations -value', '-Property DWORD -name IEHarden -value 0 -Force']}, 'condition': 'selection1'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7b544661-69fc-419f-9a59-82ccc328f205

Author: Markus Neis, Swisscom

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/06/18 critical

  • Will need to be looked for combinations of those processes

Potential PowerShell Obfuscation Via WCHAR

Detects suspicious encoded character syntax often used for defense evasion

Rule ID

process_creation_commandline_7

Query

{'selection': {'CommandLine|contains': '(WCHAR)0x'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e312efd0-35a1-407f-8439-b8d434b438a6

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/07/09 high

  • Unknown

Conti Volume Shadow Listing

Detects a command used by conti to find volume shadow backups

Rule ID

process_creation_commandline_8

Query

{'selection': {'CommandLine|contains|all': ['vssadmin list shadows', 'log.txt']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7b30e0a7-c675-4b24-8a46-82fa67e2433d

Author: Max Altgelt (Nextron Systems), Tobias Michalski (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1587.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/09 high

  • Unknown

InfDefaultInstall.exe .inf Execution

Executes SCT script using scrobj.dll from a command in entered into a specially prepared INF file.

Rule ID

process_creation_commandline_9

Query

{'selection': {'CommandLine|contains|all': ['InfDefaultInstall.exe ', '.inf']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ce7cf472-6fcc-490a-9481-3786840b5d9b

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1218

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/13 medium

  • Unknown

Root Certificate Installed From Susp Locations

Adversaries may install a root certificate on a compromised system to avoid warnings when connecting to adversary controlled web servers.

Rule ID

process_creation_commandline_10

Query

{'selection': {'CommandLine|contains|all': ['Import-Certificate', ' -FilePath ', 'Cert:\\LocalMachine\\Root'], 'CommandLine|contains': ['\\AppData\\Local\\Temp\\', ':\\Windows\\TEMP\\', '\\Desktop\\', '\\Downloads\\', '\\Perflogs\\', ':\\Users\\Public\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,5f6a601c-2ecb-498b-9c33-660362323afa

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1553.004

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/09 high

  • Unlikely

Suspicious PrinterPorts Creation (CVE-2020-1048)

Detects new commands that add new printer port which point to suspicious file

Rule ID

process_creation_commandline_11

Query

{'selection1': {'CommandLine|contains': 'Add-PrinterPort -Name'}, 'selection2': {'CommandLine|contains': ['.exe', '.dll', '.bat']}, 'selection3': {'CommandLine|contains': 'Generic / Text Only'}, 'condition': '(selection1 and selection2) or selection3'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cc08d590-8b90-413a-aff6-31d1a99678d7

Author: EagleEye Team, Florian Roth

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/13 high

  • New printer port install on host

PowerShell Script Run in AppData

Detects a suspicious command line execution that invokes PowerShell with reference to an AppData folder

Rule ID

process_creation_commandline_12

Query

{'selection1': {'CommandLine|contains': ['powershell.exe', '\\powershell', '\\pwsh', 'pwsh.exe']}, 'selection2': {'CommandLine|contains|all': ['/c ', '\\AppData\\'], 'CommandLine|contains': ['Local\\', 'Roaming\\']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ac175779-025a-4f12-98b0-acdaeb77ea85

Author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2019/01/09 medium

  • Administrative scripts

Potential Remote Desktop Tunneling

Detects potential use of an SSH utility to establish RDP over a reverse SSH Tunnel. This can be used by attackers to enable routing of network packets that would otherwise not reach their intended destination.

Rule ID

process_creation_commandline_13

Query

{'selection': {'CommandLine|contains': ':3389'}, 'selection_opt': {'CommandLine|contains': [' -L ', ' -P ', ' -R ', ' -pw ', ' -ssh ']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,8a3038e8-9c9d-46f8-b184-66234a160f6f

Author: Tim Rauch, Elastic (idea)

Tactics, Techniques, and Procedures

T1021, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/27 medium

  • Unknown

MSTSC Shadowing

Detects RDP session hijacking by using MSTSC shadowing

Rule ID

process_creation_commandline_14

Query

{'selection': {'CommandLine|contains|all': ['noconsentprompt', 'shadow:']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6ba5a05f-b095-4f0a-8654-b825f4f16334

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1563.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/01/24 high

  • Unknown

Suspicious Scan Loop Network

Adversaries may attempt to get a listing of other systems by IP address, hostname, or other logical identifier on a network that may be used for Lateral Movement from the current system

Rule ID

process_creation_commandline_15

Query

{'selection_loop': {'CommandLine|contains': ['for ', 'foreach ']}, 'selection_tools': {'CommandLine|contains': ['nslookup', 'ping']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f8ad2e2c-40b6-4117-84d7-20b89896ab23

Author: frack113

Tactics, Techniques, and Procedures

T1018, T1059, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/12 medium

  • Legitimate script

Obfuscated IP Download

Detects use of an encoded/obfuscated version of an IP address (hex, octal...) in an URL combined with a download command

Rule ID

process_creation_commandline_16

Query

{'selection_img': {'CommandLine|contains': ['Invoke-WebRequest', 'iwr ', 'wget ', 'curl ', 'DownloadFile', 'DownloadString']}, 'selection_ip': [{'CommandLine|contains': ['//0x', '.0x', '.00x']}, {'CommandLine|contains|all': ['http://%', '%2e']}], 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cb5a2333-56cf-4562-8fcb-22ba1bca728d

Author: Florian Roth (Nextron Systems), X__Junior (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/03 medium

  • Unknown

MSExchange Transport Agent Installation

Detects the Installation of a Exchange Transport Agent

Rule ID

process_creation_commandline_17

Query

{'selection': {'CommandLine|contains': 'Install-TransportAgent'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,83809e84-4475-4b69-bc3e-4aad8568612f

Author: Tobias Michalski (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1505.002

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/06/08 medium

  • Legitimate installations of exchange TransportAgents. AssemblyPath is a good indicator for this.

Pubprn.vbs Proxy Execution

Detects the use of the 'Pubprn.vbs' Microsoft signed script to execute commands.

Rule ID

process_creation_commandline_18

Query

{'selection': {'CommandLine|contains|all': ['\\pubprn.vbs', 'script:']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1fb76ab8-fa60-4b01-bddd-71e89bf555da

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1216.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/05/28 medium

  • Unknown

Tamper Windows Defender Remove-MpPreference

Detects attempts to remove windows defender configuration using the 'MpPreference' cmdlet

Rule ID

process_creation_commandline_19

Query

{'selection_remove': {'CommandLine|contains': 'Remove-MpPreference'}, 'selection_tamper': {'CommandLine|contains': ['-ControlledFolderAccessProtectedFolders ', '-AttackSurfaceReductionRules_Ids ', '-AttackSurfaceReductionRules_Actions ', '-CheckForSignaturesBeforeRunningScan ']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,07e3cb2c-0608-410d-be4b-1511cb1a0448

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/05 high

  • Legitimate PowerShell scripts

AnyDesk Silent Installation

Detects AnyDesk Remote Desktop silent installation. Which can be used by attackers to gain remote access.

Rule ID

process_creation_commandline_20

Query

{'selection': {'CommandLine|contains|all': ['--install', '--start-with-win', '--silent']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,114e7f1c-f137-48c8-8f54-3088c24ce4b9

Author: Ján Trenčanský

Tactics, Techniques, and Procedures

T1059.003, T1219

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/06 high

  • Legitimate deployment of AnyDesk

Execution via CL_Invocation.ps1

Detects Execution via SyncInvoke in CL_Invocation.ps1 module

Rule ID

process_creation_commandline_21

Query

{'selection': {'CommandLine|contains|all': ['CL_Invocation.ps1', 'SyncInvoke']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a0459f02-ac51-4c09-b511-b8c9203fc429

Author: Nasreddine Bencherchali (Nextron Systems), oscd.community, Natalia Shornikova

Tactics, Techniques, and Procedures

T1059.003, T1216

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/14 high

  • Unknown

Writing Of Malicious Files To The Fonts Folder

Monitors for the hiding possible malicious files in the C:\Windows\Fonts\ location. This folder doesn't require admin privillege to be written and executed from.

Rule ID

process_creation_commandline_24

Query

{'selection_1': {'CommandLine|contains': ['echo', 'copy', 'type', 'file createnew', 'cacls']}, 'selection_2': {'CommandLine|contains': 'C:\\Windows\\Fonts\\'}, 'selection_3': {'CommandLine|contains': ['.sh', '.exe', '.dll', '.bin', '.bat', '.cmd', '.js', '.msh', '.reg', '.scr', '.ps', '.vb', '.jar', '.pl', '.inf', '.cpl', '.hta', '.msi', '.vbs']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ae9b0bd7-8888-4606-b444-0ed7410cb728

Author: Sreeman

Tactics, Techniques, and Procedures

T1059, T1059.003, T1211

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/04/21 medium

  • Unknown

Suspicious FromBase64String Usage On Gzip Archive - Process Creation

Detects attempts of decoding a base64 Gzip archive via PowerShell. This technique is often used as a method to load malicious content into memory afterward.

Rule ID

process_creation_commandline_25

Query

{'selection': {'CommandLine|contains|all': ['FromBase64String', 'MemoryStream', 'H4sI']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d75d6b6b-adb9-48f7-824b-ac2e786efe1f

Author: frack113

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/23 medium

  • Legitimate administrative script

Suspicious Usage Of ShellExec_RunDLL

Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack

Rule ID

process_creation_commandline_26

Query

{'selection_openasrundll': {'CommandLine|contains': 'ShellExec_RunDLL'}, 'selection_suspcli': {'CommandLine|contains': ['regsvr32', 'msiexec', '\\Users\\Public\\', 'odbcconf', '\\Desktop\\', '\\Temp\\', 'Invoke-', 'iex', 'comspec']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d87bd452-6da1-456e-8155-7dc988157b7d

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/01 high

  • Unknown

Turla Group Lateral Movement

Detects automated lateral movement by Turla group

Rule ID

process_creation_commandline_27

Query

{'selection': {'CommandLine': ['net use \\\\%DomainController%\\C$ "P@ssw0rd" *', 'dir c:\\*.doc* /s', 'dir %TEMP%\\*.exe']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c601f20d-570a-4cde-a7d6-e17f99cb8e7f

Author: Markus Neis

Tactics, Techniques, and Procedures

T1021.002, T1059, T1059.003, T1083, T1135

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2017/11/07 critical

  • Unknown

Netsh RDP Port Opening

Detects netsh commands that opens the port 3389 used for RDP, used in Sarwent Malware

Rule ID

process_creation_commandline_28

Query

{'selection1': {'CommandLine|contains|all': ['netsh', 'firewall add portopening', 'tcp 3389']}, 'selection2': {'CommandLine|contains|all': ['netsh', 'advfirewall firewall add rule', 'action=allow', 'protocol=TCP', 'localport=3389']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,01aeb693-138d-49d2-9403-c4f52d7d3d62

Author: Sander Wiebing

Tactics, Techniques, and Procedures

T1059.003, T1562.004

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/23 high

  • Legitimate administration

PowerShell DownloadFile

Detects the execution of powershell, a WebClient object creation and the invocation of DownloadFile in a single command line

Rule ID

process_creation_commandline_29

Query

{'selection': {'CommandLine|contains|all': ['powershell', '.DownloadFile', 'System.Net.WebClient']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,8f70ac5f-1f6f-4f8e-b454-db19561216c5

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1059.003, T1104, T1105

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/08/28 high

  • Unknown

Powershell Defender Exclusion

Detects requests to exclude files, folders or processes from Antivirus scanning using PowerShell cmdlets

Rule ID

process_creation_commandline_30

Query

{'selection1': {'CommandLine|contains': ['Add-MpPreference ', 'Set-MpPreference ']}, 'selection2': {'CommandLine|contains': [' -ExclusionPath ', ' -ExclusionExtension ', ' -ExclusionProcess ', ' -ExclusionIpAddress ']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,17769c90-230e-488b-a463-e05c08e9d48f

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/04/29 medium

  • Possible Admin Activity

  • Other Cmdlets that may use the same parameters

Lazarus Loaders

Detects different loaders as described in various threat reports on Lazarus group activity

Rule ID

process_creation_commandline_31

Query

{'selection_cmd1': {'CommandLine|contains|all': ['cmd.exe /c ', ' -p 0x']}, 'selection_cmd2': {'CommandLine|contains': ['C:\\ProgramData\\', 'C:\\RECYCLER\\']}, 'selection_rundll1': {'CommandLine|contains|all': ['rundll32.exe ', 'C:\\ProgramData\\']}, 'selection_rundll2': {'CommandLine|contains': ['.bin,', '.tmp,', '.dat,', '.io,', '.ini,', '.db,']}, 'condition': '( selection_cmd1 and selection_cmd2 ) or ( selection_rundll1 and selection_rundll2 )'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7b49c990-4a9a-4e65-ba95-47c9cc448f6e

Author: Florian Roth (Nextron Systems), wagga

Tactics, Techniques, and Procedures

T1059, T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/12/23 critical

  • Unknown

Suspicious GrpConv Execution

Detects the suspicious execution of a utility to convert Windows 3.x .grp files or for persistence purposes by malicious software or actors

Rule ID

process_creation_commandline_32

Query

{'selection': {'CommandLine|contains': ['grpconv.exe -o', 'grpconv -o']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f14e169e-9978-4c69-acb3-1cff8200bc36

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1547

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/05/19 high

  • Unknown

Disabled RestrictedAdminMode For RDS - ProcCreation

Detect activation of DisableRestrictedAdmin to desable RestrictedAdmin mode. RestrictedAdmin mode prevents the transmission of reusable credentials to the remote system to which you connect using Remote Desktop. This prevents your credentials from being harvested during the initial connection process if the remote server has been compromise

Rule ID

process_creation_commandline_33

Query

{'selection': {'CommandLine|contains|all': ['\\System\\CurrentControlSet\\Control\\Lsa\\', 'DisableRestrictedAdmin', ' 1']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,28ac00d6-22d9-4a3c-927f-bbd770104573

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1112

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2023/01/13 high

  • Unknown

Malicious Base64 Encoded Powershell Invoke Cmdlets

Detects base64 encoded powershell cmdlet invocation of known suspicious cmdlets

Rule ID

process_creation_commandline_34

Query

{'selection': {'CommandLine|contains': ['SQBuAHYAbwBrAGUALQBCAGwAbwBvAGQASABvAHUAbgBkA', 'kAbgB2AG8AawBlAC0AQgBsAG8AbwBkAEgAbwB1AG4AZA', 'JAG4AdgBvAGsAZQAtAEIAbABvAG8AZABIAG8AdQBuAGQA', 'SQBuAHYAbwBrAGUALQBNAGkAbQBpAGsAYQB0AHoA', 'kAbgB2AG8AawBlAC0ATQBpAG0AaQBrAGEAdAB6A', 'JAG4AdgBvAGsAZQAtAE0AaQBtAGkAawBhAHQAeg', 'SQBuAHYAbwBrAGUALQBXAE0ASQBFAHgAZQBjA', 'kAbgB2AG8AawBlAC0AVwBNAEkARQB4AGUAYw', 'JAG4AdgBvAGsAZQAtAFcATQBJAEUAeABlAGMA']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,fd6e2919-3936-40c9-99db-0aa922c356f7

Author: pH-T (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/31 high

  • Unlikely

Uninstall Crowdstrike Falcon

Adversaries may disable security tools to avoid possible detection of their tools and activities by uninstalling Crowdstrike Falcon

Rule ID

process_creation_commandline_35

Query

{'selection': {'CommandLine|contains|all': ['\\WindowsSensor.exe', ' /uninstall', ' /quiet']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f0f7be61-9cf5-43be-9836-99d6ef448a18

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/12 medium

  • Uninstall by admin

Suspicious Powershell No File or Command

Detects suspicious powershell execution that ends with a common flag instead of a command or a filename to execute (could be a sign of implicit execution that uses files in WindowsApps directory)

Rule ID

process_creation_commandline_36

Query

{'selection': {'CommandLine|endswith': [' -windowstyle hidden"', ' -windowstyle hidden', " -windowstyle hidden'", ' -w hidden"', ' -w hidden', " -w hidden'", ' -ep bypass"', ' -ep bypass', " -ep bypass'", ' -noni"', ' -noni', " -noni'"]}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b66474aa-bd92-4333-a16c-298155b120df

Author: pH-T (Nextron Systems), Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1053.005, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/04/08 high

  • Unknown

New Network Provider - CommandLine

Detects when an attacker tries to add a new network provider in order to dump clear text credentials, similar to how the NPPSpy tool does it

Rule ID

process_creation_commandline_37

Query

{'selection': {'CommandLine|contains|all': ['\\System\\CurrentControlSet\\Services\\', '\\NetworkProvider']}, 'filter': {'CommandLine|contains': ['\\System\\CurrentControlSet\\Services\\WebClient\\NetworkProvider', '\\System\\CurrentControlSet\\Services\\LanmanWorkstation\\NetworkProvider', '\\System\\CurrentControlSet\\Services\\RDPNP\\NetworkProvider']}, 'condition': 'selection and not filter'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,baef1ec6-2ca9-47a3-97cc-4cf2bda10b77

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1003, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/23 high

  • Other legitimate network providers used and not filtred in this rule

Turla Group Commands May 2020

Detects commands used by Turla group as reported by ESET in May 2020

Rule ID

process_creation_commandline_38

Query

{'selection1': {'CommandLine|contains': ['tracert -h 10 yahoo.com', '.WSqmCons))|iex;', 'Fr`omBa`se6`4Str`ing']}, 'selection2': {'CommandLine|contains|all': ['net use https://docs.live.net', '@aol.co.uk']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,9e2e51c5-c699-4794-ba5a-29f5da40ac0c

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1053.005, T1059.001, T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/26 critical

  • Unknown

Potential Data Stealing Via Chromium Headless Debugging

Detects chromium based browsers starting in headless and debugging mode and pointing to a user profile. This could be a sign of data stealing or remote control

Rule ID

process_creation_commandline_39

Query

{'selection': {'CommandLine|contains|all': ['--remote-debugging-', '--user-data-dir', '--headless']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3e8207c5-fcd2-4ea6-9418-15d45b4890e4

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1185

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/23 high

  • Unknown

Invoke-Obfuscation Via Use MSHTA

Detects Obfuscated Powershell via use MSHTA in Scripts

Rule ID

process_creation_commandline_40

Query

{'selection': {'CommandLine|contains|all': ['set', '&&', 'mshta', 'vbscript:createobject', '.run', '(window.close)']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ac20ae82-8758-4f38-958e-b44a3140ca88

Author: Nikita Nazarov, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/08 high

  • Unknown

Suspicious Rundll32 Script in CommandLine

Detects suspicious process related to rundll32 based on arguments

Rule ID

process_creation_commandline_41

Query

{'selection': {'CommandLine|contains|all': ['rundll32', 'mshtml,RunHTMLApplication'], 'CommandLine|contains': ['javascript:', 'vbscript:']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,73fcad2e-ff14-4c38-b11d-4172c8ac86c7

Author: frack113, Zaw Min Htun (ZETA)

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/12/04 medium

  • False positives depend on scripts and administrative tools used in the monitored environment

Suspicious Base64 Encoded Powershell Invoke

Detects base64 encoded powershell 'Invoke-' call

Rule ID

process_creation_commandline_42

Query

{'selection': {'CommandLine|contains': ['SQBuAHYAbwBrAGUALQ', 'kAbgB2AG8AawBlAC0A', 'JAG4AdgBvAGsAZQAtA']}, 'filter_other_rule': {'CommandLine|contains': ['SQBuAHYAbwBrAGUALQBCAGwAbwBvAGQASABvAHUAbgBkA', 'kAbgB2AG8AawBlAC0AQgBsAG8AbwBkAEgAbwB1AG4AZA', 'JAG4AdgBvAGsAZQAtAEIAbABvAG8AZABIAG8AdQBuAGQA', 'SQBuAHYAbwBrAGUALQBNAGkAbQBpAGsAYQB0AHoA', 'kAbgB2AG8AawBlAC0ATQBpAG0AaQBrAGEAdAB6A', 'JAG4AdgBvAGsAZQAtAE0AaQBtAGkAawBhAHQAeg', 'SQBuAHYAbwBrAGUALQBXAE0ASQBFAHgAZQBjA', 'kAbgB2AG8AawBlAC0AVwBNAEkARQB4AGUAYw', 'JAG4AdgBvAGsAZQAtAFcATQBJAEUAeABlAGMA']}, 'condition': 'selection and not 1 of filter*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6385697e-9f1b-40bd-8817-f4a91f40508e

Author: pH-T (Nextron Systems), Harjot Singh, @cyb3rjy0t

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/20 high

  • Unlikely

HackTool - Bloodhound/Sharphound Execution

Detects command line parameters used by Bloodhound and Sharphound hack tools

Rule ID

process_creation_commandline_44

Query

{'selection_cli_1': {'CommandLine|contains': [' -CollectionMethod All ', ' --CollectionMethods Session ', ' --Loop --Loopduration ', ' --PortScanTimeout ', '.exe -c All -d ', 'Invoke-Bloodhound', 'Get-BloodHoundData']}, 'selection_cli_2': {'CommandLine|contains|all': [' -JsonFolder ', ' -ZipFileName ']}, 'selection_cli_3': {'CommandLine|contains|all': [' DCOnly ', ' --NoSaveCache ']}, 'condition': '1 of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f376c8a7-a2d0-4ddc-aa0c-16c17236d962

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1069.001, T1069.002, T1087.001, T1087.002, T1482

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/12/20 high

  • Other programs that use these command line option and accepts an 'All' parameter

Explorer Process Tree Break

Detects a command line process that uses explorer.exe to launch arbitrary commands or binaries, which is similar to cmd.exe /c, only it breaks the process tree and makes its parent a new instance of explorer spawning from "svchost"

Rule ID

process_creation_commandline_45

Query

{'selection': [{'CommandLine|contains': '/factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b}'}, {'CommandLine|contains|all': ['explorer.exe', ' /root,']}], 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,949f1ffb-6e85-4f00-ae1e-c3c5b190d605

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems), @gott_cyber

Tactics, Techniques, and Procedures

T1036, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/06/29 medium

  • Unknown how many legitimate software products use that method

Suspicious Del in CommandLine

Detects suspicious command line to remove and 'exe' or 'dll'

Rule ID

process_creation_commandline_46

Query

{'susp_del_exe': {'CommandLine|contains|all': ['del ', '*.exe', '/f ', '/q ']}, 'susp_del_dll': {'CommandLine|contains|all': ['del ', '*.dll', 'C:\\ProgramData\\']}, 'condition': 'susp_del_exe or susp_del_dll'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,204b17ae-4007-471b-917b-b917b315c5db

Author: frack113 , X__Junior (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1070.004

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/12/02 medium

  • Unknown

Invoke-Obfuscation COMPRESS OBFUSCATION

Detects Obfuscated Powershell via COMPRESS OBFUSCATION

Rule ID

process_creation_commandline_47

Query

{'selection': {'CommandLine|contains|all': ['new-object', 'text.encoding]::ascii'], 'CommandLine|contains': ['system.io.compression.deflatestream', 'system.io.streamreader', 'readtoend(']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7eedcc9d-9fdb-4d94-9c54-474e8affc0c7

Author: Timur Zinniatullin, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/18 medium

  • Unknown

Operation Wocao Activity

Detects activity mentioned in Operation Wocao report

Rule ID

process_creation_commandline_48

Query

{'selection': {'CommandLine|contains': ['checkadmin.exe 127.0.0.1 -all', 'netsh advfirewall firewall add rule name=powershell dir=in', 'cmd /c powershell.exe -ep bypass -file c:\\s.ps1', '/tn win32times /f', 'create win32times binPath=', '\\c$\\windows\\system32\\devmgr.dll', ' -exec bypass -enc JgAg', 'type *keepass\\KeePass.config.xml', 'iie.exe iie.txt', 'reg query HKEY_CURRENT_USER\\Software\\*\\PuTTY\\Sessions\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

  • The 'System Security Extension' audit subcategory need to be enabled to log the EID 4697

Rule Source

SigmaHQ,1cfac73c-be78-4f9a-9b08-5bde0c3953ab

Author: Florian Roth (Nextron Systems), frack113

Tactics, Techniques, and Procedures

T1012, T1027, T1036.004, T1053.005, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/12/20 high

  • Administrators that use checkadmin.exe tool to enumerate local administrators

Fireball Archer Install

Detects Archer malware invocation via rundll32

Rule ID

process_creation_commandline_49

Query

{'selection': {'CommandLine|contains|all': ['rundll32.exe', 'InstallArcherSvc']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3d4aebe0-6d29-45b2-a8a4-3dfde586a26d

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2017/06/03 high

  • Unknown

Zip A Folder With PowerShell For Staging In Temp

Use living off the land tools to zip a file and stage it in the Windows temporary folder for later exfiltration

Rule ID

process_creation_commandline_50

Query

{'selection': {'CommandLine|contains|all': ['Compress-Archive ', ' -Path ', ' -DestinationPath ', '$env:TEMP\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,85a8e5ba-bd03-4bfb-bbfa-a4409a8f8b98

Author: Nasreddine Bencherchali (Nextron Systems), frack113

Tactics, Techniques, and Procedures

T1059.003, T1074.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/20 medium

  • Unknown

Registry Dump of SAM Creds and Secrets

Adversaries may attempt to extract credential material from the Security Account Manager (SAM) database either through Windows Registry where the SAM database is stored

Rule ID

process_creation_commandline_51

Query

{'selection_reg': {'CommandLine|contains': ' save '}, 'selection_key': {'CommandLine|contains': ['HKLM\\sam', 'HKLM\\system', 'HKLM\\security']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,038cd51c-3ad8-41c5-ba8f-5d1c92f3cc1e

Author: frack113

Tactics, Techniques, and Procedures

T1003.002, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/05 high

  • Unknown

Procdump Evasion

Detects uses of the SysInternals Procdump utility in which procdump or its output get renamed or a dump file is moved ot copied to a different name

Rule ID

process_creation_commandline_52

Query

{'selection1': {'CommandLine|contains': ['copy procdump', 'move procdump']}, 'selection2': {'CommandLine|contains|all': ['copy ', '.dmp '], 'CommandLine|contains': ['2.dmp', 'lsass', 'out.dmp']}, 'selection3': {'CommandLine|contains': ['copy lsass.exe_', 'move lsass.exe_']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,79b06761-465f-4f88-9ef2-150e24d3d737

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1003.001, T1036, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/11 high

  • Cases in which procdump just gets copied to a different directory without any renaming

Powershell Token Obfuscation - Process Creation

Detects TOKEN OBFUSCATION technique from Invoke-Obfuscation

Rule ID

process_creation_commandline_53

Query

{'selection': [{'CommandLine|re': '\\w+`(\\w+|-|.)`[\\w+|\\s]'}, {'CommandLine|re': '"(\\{\\d\\})+"\\s*-f'}, {'CommandLine|re': '\\$\\{((e|n|v)*`(e|n|v)*)+:path\\}|\\$\\{((e|n|v)*`(e|n|v)*)+:((p|a|t|h)*`(p|a|t|h)*)+\\}|\\$\\{env:((p|a|t|h)*`(p|a|t|h)*)+\\}'}], 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,deb9b646-a508-44ee-b7c9-d8965921c6b6

Author: frack113

Tactics, Techniques, and Procedures

T1027.009, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/27 high

  • Unknown

Suspicious Minimized MSEdge Start

Detects the suspicious minimized start of MsEdge browser, which can be used to download files from the Internet

Rule ID

process_creation_commandline_54

Query

{'selection': {'CommandLine|contains': 'start /min msedge'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,94771a71-ba41-4b6e-a757-b531372eaab6

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1105

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/11 high

  • Software that uses MsEdge to download components in the background (see ParentImage, ParentCommandLine)

Suspicious PowerShell Download and Execute Pattern

Detects suspicious PowerShell download patterns that are often used in malicious scripts, stagers or downloaders (make sure that your backend applies the strings case-insensitive)

Rule ID

process_creation_commandline_55

Query

{'selection': {'CommandLine|contains': ['IEX ((New-Object Net.WebClient).DownloadString', 'IEX (New-Object Net.WebClient).DownloadString', 'IEX((New-Object Net.WebClient).DownloadString', 'IEX(New-Object Net.WebClient).DownloadString', ' -command (New-Object System.Net.WebClient).DownloadFile(', ' -c (New-Object System.Net.WebClient).DownloadFile(']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e6c54d94-498c-4562-a37c-b469d8e9a275

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/02/28 high

  • Software installers that pull packages from remote systems and execute them

Add User to Local Administrators

Detects suspicious command line that adds an account to the local administrators/administrateurs group

Rule ID

process_creation_commandline_56

Query

{'selection_main': [{'CommandLine|contains|all': ['localgroup ', ' /add']}, {'CommandLine|contains|all': ['Add-LocalGroupMember ', ' -Group ']}], 'selection_group': {'CommandLine|contains': [' administrators ', ' administrateur']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ad720b90-25ad-43ff-9b5e-5c841facc8e5

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1098

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/12 medium

  • Administrative activity

Taskkill Symantec Endpoint Protection

Detects one of the possible scenarios for disabling symantec endpoint protection. Symantec Endpoint Protection antivirus software services incorrectly implement the protected service mechanism. As a result, the NT AUTHORITY/SYSTEM user can execute the taskkill /im command several times ccSvcHst.exe /f, thereby killing the process belonging to the service, and thus shutting down the service.

Rule ID

process_creation_commandline_57

Query

{'selection': {'CommandLine|contains|all': ['taskkill', ' /F ', ' /IM ', 'ccSvcHst.exe']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,4a6713f6-3331-11ed-a261-0242ac120002

Author: Ilya Krestinichev, Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/13 high

  • Unknown

MsiExec Web Install

Detects suspicious msiexec process starts with web addresses as parameter

Rule ID

process_creation_commandline_58

Query

{'selection': {'CommandLine|contains|all': [' msiexec', '://']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f7b5f842-a6af-4da5-9e95-e32478f3cd2f

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1105, T1218.007

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/02/09 medium

  • False positives depend on scripts and administrative tools used in the monitored environment

PsExec Service Start

Detects a PsExec service start

Rule ID

process_creation_commandline_59

Query

{'selection': {'CommandLine': 'C:\\Windows\\PSEXESVC.exe'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3ede524d-21cc-472d-a3ce-d21b568d8db7

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1569.002

References

N/A

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/03/13 low

  • Administrative activity

Scheduled Task WScript VBScript

Detects specific process parameters as used by ACTINIUM scheduled task persistence creation.

Rule ID

process_creation_commandline_60

Query

{'selection': {'CommandLine|contains|all': ['schtasks', 'create', 'wscript', 'e:vbscript']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e1118a8f-82f5-44b3-bb6b-8a284e5df602

Author: Andreas Hunkeler (@Karneades)

Tactics, Techniques, and Procedures

T1053, T1053.005, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/02/07 high

  • Unlikely

Dropping Of Password Filter DLL

Detects dropping of dll files in system32 that may be used to retrieve user credentials from LSASS

Rule ID

process_creation_commandline_61

Query

{'selection_cmdline': {'CommandLine|contains|all': ['HKLM\\SYSTEM\\CurrentControlSet\\Control\\Lsa', 'scecli\\0*', 'reg add']}, 'condition': 'selection_cmdline'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b7966f4a-b333-455b-8370-8ca53c229762

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1556.002

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/29 medium

  • Unknown

Suspicious UltraVNC Execution

Detects suspicious UltraVNC command line flag combination that indicate a auto reconnect upon execution, e.g. startup (as seen being used by Gamaredon threat group)

Rule ID

process_creation_commandline_62

Query

{'selection': {'CommandLine|contains|all': ['-autoreconnect ', '-connect ', '-id:']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,871b9555-69ca-4993-99d3-35a59f9f3599

Author: Bhabesh Raj

Tactics, Techniques, and Procedures

T1021.005, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/04 high

  • Unknown

Potential AMSI Bypass Using NULL Bits - ProcessCreation

Detects usage of special strings/null bits in order to potentially bypass AMSI functionalities

Rule ID

process_creation_commandline_63

Query

{'selection': {'CommandLine|contains': ["if(0){{{0}}}' -f $(0 -as [char]) +", '#<NULL>']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,92a974db-ab84-457f-9ec0-55db83d7a825

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2023/01/04 medium

  • Unknown

Invoke-Obfuscation CLIP+ Launcher

Detects Obfuscated use of Clip.exe to execute PowerShell

Rule ID

process_creation_commandline_65

Query

{'selection': {'CommandLine|contains|all': ['cmd', '&&', 'clipboard]::', '-f'], 'CommandLine|contains': ['/c', '/r']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b222df08-0e07-11eb-adc1-0242ac120002

Author: Jonathan Cheong, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/13 high

  • Unknown

SyncAppvPublishingServer VBS Execute Arbitrary PowerShell Code

Executes arbitrary PowerShell code using SyncAppvPublishingServer.vbs

Rule ID

process_creation_commandline_67

Query

{'selection': {'CommandLine|contains|all': ['\\SyncAppvPublishingServer.vbs', ';']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,36475a7d-0f6d-4dce-9b01-6aeb473bbaf1

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1216, T1218

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/07/16 medium

  • Unknown

Suspicious Add User to Remote Desktop Users Group

Detects suspicious command line in which a user gets added to the local Remote Desktop Users group

Rule ID

process_creation_commandline_68

Query

{'selection_main': [{'CommandLine|contains|all': ['localgroup ', ' /add']}, {'CommandLine|contains|all': ['Add-LocalGroupMember ', ' -Group ']}], 'selection_group': {'CommandLine|contains': ['Remote Desktop Users', 'Utilisateurs du Bureau à distance', 'Usuarios de escritorio remoto']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ffa28e60-bdb1-46e0-9f82-05f7a61cc06e

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1021.001, T1059.003, T1133, T1136.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/12/06 high

  • Administrative activity

GatherNetworkInfo.vbs Script Usage

Adversaries can abuse of C:\Windows\System32\gatherNetworkInfo.vbs script along with cscript.exe to gather information about the target

Rule ID

process_creation_commandline_69

Query

{'selection': {'CommandLine|contains|all': ['cscript.exe', 'gatherNetworkInfo.vbs']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,575dce0c-8139-4e30-9295-1ee75969f7fe

Author: blueteamer8699

Tactics, Techniques, and Procedures

T1059.003, T1059.005, T1615

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/03 medium

  • Administrative activity

APT29

This method detects a suspicious PowerShell command line combination as used by APT29 in a campaign against U.S. think tanks.

Rule ID

process_creation_commandline_70

Query

{'selection': {'CommandLine|contains|all': ['-noni', '-ep', 'bypass', '$']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,033fe7d6-66d1-4240-ac6b-28908009c71f

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/12/04 high

  • Unknown

Suspicious WMIC ActiveScriptEventConsumer Creation

Detects WMIC executions in which a event consumer gets created in order to establish persistence

Rule ID

process_creation_commandline_71

Query

{'selection': {'CommandLine|contains|all': ['ActiveScriptEventConsumer', ' CREATE ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ebef4391-1a81-4761-a40a-1db446c0e625

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1546.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/06/25 high

  • Legitimate software creating script event consumers

TAIDOOR RAT DLL Load

Detects specific process characteristics of Chinese TAIDOOR RAT malware load

Rule ID

process_creation_commandline_72

Query

{'selection1': {'CommandLine|contains': ['dll,MyStart', 'dll MyStart']}, 'selection2a': {'CommandLine|endswith': ' MyStart'}, 'selection2b': {'CommandLine|contains': 'rundll32.exe'}, 'condition': 'selection1 or ( selection2a and selection2b )'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d1aa3382-abab-446f-96ea-4de52908210b

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1055.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/07/30 high

  • Unknown

Empire PowerShell UAC Bypass

Detects some Empire PowerShell UAC bypass methods

Rule ID

process_creation_commandline_73

Query

{'selection': {'CommandLine|contains': [' -NoP -NonI -w Hidden -c $x=$((gp HKCU:Software\\Microsoft\\Windows Update).Update)', ' -NoP -NonI -c $x=$((gp HKCU:Software\\Microsoft\\Windows Update).Update);']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3268b746-88d8-4cd3-bffc-30077d02c787

Author: Ecco

Tactics, Techniques, and Procedures

T1059.003, T1548.002

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2019/08/30 critical

  • Unknown

Emotet Process Creation

Detects all Emotet like process executions that are not covered by the more generic rules

Rule ID

process_creation_commandline_74

Query

{'selection': {'CommandLine|contains': [' -e* PAA', 'JABlAG4AdgA6AHUAcwBlAHIAcAByAG8AZgBpAGwAZQ', 'QAZQBuAHYAOgB1AHMAZQByAHAAcgBvAGYAaQBsAGUA', 'kAGUAbgB2ADoAdQBzAGUAcgBwAHIAbwBmAGkAbABlA', 'IgAoACcAKgAnACkAOwAkA', 'IAKAAnACoAJwApADsAJA', 'iACgAJwAqACcAKQA7ACQA', 'JABGAGwAeAByAGgAYwBmAGQ', 'PQAkAGUAbgB2ADoAdABlAG0AcAArACgA', '0AJABlAG4AdgA6AHQAZQBtAHAAKwAoA', '9ACQAZQBuAHYAOgB0AGUAbQBwACsAKA']}, 'filter': {'CommandLine|contains': ['fAAgAEMAbwBuAHYAZQByAHQAVABvAC0ASgBzAG8AbgAgAC0ARQByAHIAbwByAEEAYwB0AGkAbwBuACAAUwBpAGwAZQBuAHQAbAB5AEMAbwBuAHQAaQBuAHUAZQ', 'wAIABDAG8AbgB2AGUAcgB0AFQAbwAtAEoAcwBvAG4AIAAtAEUAcgByAG8AcgBBAGMAdABpAG8AbgAgAFMAaQBsAGUAbgB0AGwAeQBDAG8AbgB0AGkAbgB1AGUA', '8ACAAQwBvAG4AdgBlAHIAdABUAG8ALQBKAHMAbwBuACAALQBFAHIAcgBvAHIAQQBjAHQAaQBvAG4AIABTAGkAbABlAG4AdABsAHkAQwBvAG4AdABpAG4AdQBlA']}, 'condition': 'selection and not filter'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d02e8cf5-6099-48cf-9bfc-1eec2d0c7b18

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2019/09/30 high

  • Unlikely

Esentutl Gather Credentials

Conti recommendation to its affiliates to use esentutl to access NTDS dumped file. Trickbot also uses this utilities to get MSEdge info via its module pwgrab.

Rule ID

process_creation_commandline_75

Query

{'selection': {'CommandLine|contains|all': ['esentutl', ' /p']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7df1713a-1a5b-4a4b-a071-dc83b144a101

Author: sam0x90

Tactics, Techniques, and Procedures

T1003, T1003.003, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/06 medium

  • To be determined

EvilNum Golden Chickens Deployment via OCX Files

Detects Golden Chickens deployment method as used by Evilnum in report published in July 2020

Rule ID

process_creation_commandline_76

Query

{'selection': {'CommandLine|contains|all': ['regsvr32', '/s', '/i', '\\AppData\\Roaming\\', '.ocx']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,8acf3cfa-1e8c-4099-83de-a0c4038e18f0

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/07/10 critical

  • Unknown

Suspicious Dosfuscation Character in Commandline

Detects possible payload obfuscation via the commandline

Rule ID

process_creation_commandline_77

Query

{'selection': {'CommandLine|contains': ['^^', ',;,', '%COMSPEC:~', ' s^et ', ' s^e^t ', ' se^t ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a77c1610-fc73-4019-8e29-0f51efc04a51

Author: frack113, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/02/15 medium

  • Legitimate use

WhoAmI as Parameter

Detects a suspicious process command line that uses whoami as first parameter (as e.g. used by EfsPotato)

Rule ID

process_creation_commandline_78

Query

{'selection': {'CommandLine|contains': '.exe whoami'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e9142d84-fbe0-401d-ac50-3e519fb00c89

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1033, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/11/29 high

  • Unknown

Powershell Inline Execution From A File

Detects inline execution of PowerShell code from a file

Rule ID

process_creation_commandline_79

Query

{'selection_exec': {'CommandLine|contains': ['iex ', 'Invoke-Expression ', 'Invoke-Command ', 'icm ']}, 'selection_read': {'CommandLine|contains': ['cat ', 'get-content ', 'type ']}, 'selection_raw': {'CommandLine|contains': ' -raw'}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ee218c12-627a-4d27-9e30-d6fb2fe22ed2

Author: frack113

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/25 medium

  • Unknown

Base64 Encoded PowerShell Command Detected

Detects usage of the "FromBase64String" function in the commandline which is used to decode a base64 encoded string

Rule ID

process_creation_commandline_80

Query

{'selection': {'CommandLine|contains': '::FromBase64String('}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e32d4572-9826-4738-b651-95fa63747e8a

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003, T1140

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/01/29 high

  • Administrative script libraries

CL_Mutexverifiers.ps1 Proxy Execution

Detects the use of a Microsoft signed script to execute commands

Rule ID

process_creation_commandline_81

Query

{'selection': {'CommandLine|contains|all': ['\\CL_Mutexverifiers.ps1', 'runAfterCancelProcess ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1e0e1a81-e79b-44bc-935b-ddb9c8006b3d

Author: Nasreddine Bencherchali (Nextron Systems), oscd.community, Natalia Shornikova, frack113

Tactics, Techniques, and Procedures

T1059.003, T1216

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/05/21 medium

  • Unknown

Suspicious X509Enrollment - Process Creation

Detect use of X509Enrollment

Rule ID

process_creation_commandline_82

Query

{'selection': {'CommandLine|contains': ['X509Enrollment.CBinaryConverter', '884e2002-217d-11da-b2a4-000e7bbb2b09']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,114de787-4eb2-48cc-abdb-c0b449f93ea4

Author: frack113

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/23 medium

  • Legitimate administrative script

Suspicious Regsvr32 HTTP IP Pattern

Detects a certain command line flag combination used by regsvr32 when used to download and register a DLL from a remote address which uses HTTP (not HTTPS) and a IP address and not FQDN

Rule ID

process_creation_commandline_83

Query

{'selection_flags': {'CommandLine|contains|all': [' /s', ' /u']}, 'selection_ip': {'CommandLine|contains': [' /i:http://1', ' /i:http://2', ' /i:http://3', ' /i:http://4', ' /i:http://5', ' /i:http://6', ' /i:http://7', ' /i:http://8', ' /i:http://9', ' /i:https://1', ' /i:https://2', ' /i:https://3', ' /i:https://4', ' /i:https://5', ' /i:https://6', ' /i:https://7', ' /i:https://8', ' /i:https://9']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2dd2c217-bf68-437a-b57c-fe9fd01d5de8

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218.010

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/01/11 high

  • FQDNs that start with a number

Rundll32 Without Parameters

Detects rundll32 execution without parameters as observed when running Metasploit windows/smb/psexec exploit module

Rule ID

process_creation_commandline_84

Query

{'selection': {'CommandLine': 'rundll32.exe'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,5bb68627-3198-40ca-b458-49f973db8752

Author: Bartlomiej Czyz, Relativity

Tactics, Techniques, and Procedures

T1021.002, T1059.003, T1569.002, T1570

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/01/31 high

  • Unknown

Suspicious Ntdll Pipe Redirection

Detects command that type the content of ntdll.dll to a different file or a pipe in order to evade AV / EDR detection

Rule ID

process_creation_commandline_85

Query

{'selection': {'CommandLine|contains': ['type %windir%\\system32\\ntdll.dll', 'type %systemroot%\\system32\\ntdll.dll', 'type c:\\windows\\system32\\ntdll.dll', '\\ntdll.dll > \\\\.\\pipe\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,bbc865e4-7fcd-45a6-8ff1-95ced28ec5b2

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

N/A

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/05 high

  • Unknown

Raccine Uninstall

Detects commands that indicate a Raccine removal from an end system. Raccine is a free ransomware protection tool.

Rule ID

process_creation_commandline_86

Query

{'selection1': {'CommandLine|contains|all': ['taskkill ', 'RaccineSettings.exe']}, 'selection2': {'CommandLine|contains|all': ['reg.exe', 'delete', 'Raccine Tray']}, 'selection3': {'CommandLine|contains|all': ['schtasks', '/DELETE', 'Raccine Rules Updater']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a31eeaed-3fd5-478e-a8ba-e62c6b3f9ecc

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/01/21 high

  • Legitimate deinstallation by administrative staff

REGISTER_APP.VBS Proxy Execution

Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.

Rule ID

process_creation_commandline_88

Query

{'selection': {'CommandLine|contains|all': ['\\register_app.vbs', '-register']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1c8774a0-44d4-4db0-91f8-e792359c70bd

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/19 medium

  • Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign

PowerShell Get-Process LSASS

Detects a "Get-Process" cmdlet and it's aliases on lsass process, which is in almost all cases a sign of malicious activity

Rule ID

process_creation_commandline_89

Query

{'selection': {'CommandLine|contains': ['Get-Process lsas', 'ps lsas', 'gps lsas']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b2815d0d-7481-4bf0-9b6c-a4c48a94b349

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1552.004

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/04/23 high

  • Unknown

Raspberry Robin Dot Ending File

Detects commandline containing reference to files ending with a "." This scheme has been seen used by raspberry-robin

Rule ID

process_creation_commandline_90

Query

{'selection': {'CommandLine|re': '\\\\[a-zA-Z0-9]{1,32}\\.[a-zA-Z0-9]{1,6}\\.[ "\']{1}'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a35c97c8-d9c4-4c89-a3e7-533dc0bcb73a

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/10/28 high

  • Unknown

LockerGoga Ransomware

Detects LockerGoga Ransomware command line.

Rule ID

process_creation_commandline_91

Query

{'selection': {'CommandLine|contains': '-i SM-tgytutrc -s'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,74db3488-fd28-480a-95aa-b7af626de068

Author: Vasiliy Burov, oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1486

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2020/10/18 critical

  • Unlikely

Write Protect For Storage Disabled

Looks for changes to registry to disable any write-protect property for storage devices. This could be a precursor to a ransomware attack and has been an observed technique used by cypherpunk group.

Rule ID

process_creation_commandline_92

Query

{'selection': {'CommandLine|contains|all': ['reg add', '\\system\\currentcontrolset\\control', 'write protection', '0'], 'CommandLine|contains': ['storage', 'storagedevicepolicies']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,75f7a0e2-7154-4c4d-9eae-5cdb4e0a5c13

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1562

References

N/A

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/06/11 medium

  • Unknown

Audio Capture via PowerShell

Detects audio capture via PowerShell Cmdlet.

Rule ID

process_creation_commandline_93

Query

{'selection': {'CommandLine|contains': 'WindowsAudioDevice-Powershell-Cmdlet'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,932fb0d8-692b-4b0f-a26e-5643a50fe7d6

Author: E.M. Anhaus (originally from Atomic Blue Detections, Endgame), oscd.community, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1123

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/10/24 medium

  • Legitimate audio capture by legitimate user.

Potential Suspicious Windows Feature Enabled - ProcCreation

Detects usage of the built-in PowerShell cmdlet "Enable-WindowsOptionalFeature" used as a Deployment Image Servicing and Management tool. Similar to DISM.exe, this cmdlet is used to enumerate, install, uninstall, configure, and update features and packages in Windows images

Rule ID

process_creation_commandline_94

Query

{'selection_cmd': {'CommandLine|contains|all': ['Enable-WindowsOptionalFeature', '-Online', '-FeatureName']}, 'selection_feature': {'CommandLine|contains': ['TelnetServer', 'Internet-Explorer-Optional-amd64', 'TFTP', 'SMB1Protocol', 'Client-ProjFS', 'Microsoft-Windows-Subsystem-Linux']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c740d4cf-a1e9-41de-bb16-8a46a4f57918

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/29 medium

  • Unknown

Reg Disable Security Service

Detects a suspicious reg.exe invocation that looks as if it would disable an important security service

Rule ID

process_creation_commandline_96

Query

{'selection_reg_add': {'CommandLine|contains|all': ['reg', 'add']}, 'selection_cli_reg_start': {'CommandLine|contains|all': [' /d 4', ' /v Start'], 'CommandLine|contains': ['\\Sense', '\\WinDefend', '\\MsMpSvc', '\\NisSrv', '\\WdBoot', '\\WdNisDrv', '\\WdNisSvc', '\\wscsvc', '\\SecurityHealthService', '\\wuauserv', '\\UsoSvc', '\\WdFilter', '\\AppIDSvc']}, 'selection_cli_reg_disable_defender': {'CommandLine|contains|all': [' /d 1', 'Windows Defender'], 'CommandLine|contains': ['DisableIOAVProtection', 'DisableOnAccessProtection', 'DisableRoutinelyTakingAction', 'DisableScanOnRealtimeEnable', 'DisableBlockAtFirstSeen', 'DisableBehaviorMonitoring', 'DisableEnhancedNotifications', 'DisableAntiSpyware', 'DisableAntiSpywareRealtimeProtection', 'DisableConfig', 'DisablePrivacyMode', 'SignatureDisableUpdateOnStartupWithoutEngine', 'DisableArchiveScanning', 'DisableIntrusionPreventionSystem', 'DisableScriptScanning']}, 'condition': 'selection_reg_add and 1 of selection_cli_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,5e95028c-5229-4214-afae-d653d573d0ec

Author: Florian Roth (Nextron Systems), John Lambert (idea), elhoim

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/07/14 high

  • Unknown

  • Other security solution installers

Serv-U Exploitation CVE-2021-35211 by DEV-0322

Detects patterns as noticed in exploitation of Serv-U CVE-2021-35211 vulnerability by threat group DEV-0322

Rule ID

process_creation_commandline_97

Query

{'selection_whoami': {'CommandLine|contains': 'whoami'}, 'selection_cmd_1': {'CommandLine|contains': ['./Client/Common/', '.\\Client\\Common\\']}, 'selection_cmd_2': {'CommandLine|contains': 'C:\\Windows\\Temp\\Serv-U.bat'}, 'condition': 'selection_whoami and 1 of selection_cmd*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,75578840-9526-4b2a-9462-af469a45e767

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1136.001

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/14 critical

  • Unlikely

Suspicious Debugger Registration Cmdline

Detects the registration of a debugger for a program that is available in the logon screen (sticky key backdoor).

Rule ID

process_creation_commandline_98

Query

{'selection1': {'CommandLine|contains': '\\CurrentVersion\\Image File Execution Options\\'}, 'selection2': {'CommandLine|contains': ['sethc.exe', 'utilman.exe', 'osk.exe', 'magnify.exe', 'narrator.exe', 'displayswitch.exe', 'atbroker.exe', 'HelpPane.exe']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ae215552-081e-44c7-805f-be16f975c8a2

Author: Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeiro

Tactics, Techniques, and Procedures

T1059.003, T1546.008

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/09/06 high

  • Unknown

CrackMapExec Command Execution

Detect various execution methods of the CrackMapExec pentesting framework

Rule ID

process_creation_commandline_99

Query

{'selection': {'CommandLine|endswith': ['cmd.exe /Q /c * 1> \\\\*\\*\\* 2>&1', 'cmd.exe /C * > \\\\*\\*\\* 2>&1', 'cmd.exe /C * > *\\Temp\\* 2>&1'], 'CommandLine|contains': ['powershell.exe -exec bypass -noni -nop -w 1 -C "', 'powershell.exe -noni -nop -w 1 -enc ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,058f4380-962d-40a5-afce-50207d36d7e2

Author: Thomas Patzke

Tactics, Techniques, and Procedures

T1047, T1053, T1059.001, T1059.003, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2020/05/22 high

  • Unknown

DevInit Lolbin Download

Detects a certain command line flag combination used by devinit.exe lolbin to download arbitrary MSI packages on a Windows system

Rule ID

process_creation_commandline_100

Query

{'selection': {'CommandLine|contains|all': [' -t msi-install ', ' -i http']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,90d50722-0483-4065-8e35-57efaadd354d

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/11 high

  • Unknown

Sticky-Key Backdoor Copy Cmd.exe

By replacing the sticky keys executable with the local admins CMD executable, an attacker is able to access a privileged windows console session without authenticating to the system. When the sticky keys are "activated" the privilleged shell is launched.

Rule ID

process_creation_commandline_101

Query

{'selection': {'CommandLine': 'copy /y C:\\windows\\system32\\cmd.exe C:\\windows\\system32\\sethc.exe'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1070db9a-3e5d-412e-8e7b-7183b616e1b3

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1546.008

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2020/02/18 medium

  • Unknown

Suspicious Use of Procdump on LSASS

Detects suspicious uses of the SysInternals Procdump utility by using a special command line parameter in combination with the lsass.exe process. This way we're also able to catch cases in which the attacker has renamed the procdump executable.

Rule ID

process_creation_commandline_102

Query

{'selection1': {'CommandLine|contains': [' -ma ', ' /ma ']}, 'selection2': {'CommandLine|contains': ' ls'}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,5afee48e-67dd-4e03-a783-f74259dcf998

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1003.001, T1036, T1059.003

References

N/A

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2018/10/30 high

  • Unlikely, because no one should dump an lsass process memory

  • Another tool that uses the command line switches of Procdump

Suspicious Rundll32 Activity Invoking Sys File

Detects suspicious process related to rundll32 based on command line that includes a *.sys file as seen being used by UNC2452

Rule ID

process_creation_commandline_103

Query

{'selection1': {'CommandLine|contains': 'rundll32.exe'}, 'selection2': {'CommandLine|contains': ['.sys,', '.sys ']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,731231b9-0b5d-4219-94dd-abb6959aa7ea

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/03/05 high

  • Unknown

ETW Logging Tamper In .NET Processes

Detects changes to environment variables related to ETW logging. This could indicate potential adversaries stopping ETW providers recording loaded .NET assemblies.

Rule ID

process_creation_commandline_104

Query

{'selection': {'CommandLine|contains': ['COMPlus_ETWEnabled', 'COMPlus_ETWFlags']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,41421f44-58f9-455d-838a-c398859841d4

Author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)

Tactics, Techniques, and Procedures

T1059.003, T1562

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/02 high

  • Unlikely

Suspicious WMIC Execution - ProcessCallCreate

Detects WMIC executing "process call create" with suspicious calls to processes such as "rundll32", "regsrv32"...etc

Rule ID

process_creation_commandline_105

Query

{'selection': {'CommandLine|contains|all': ['process ', 'call ', 'create '], 'CommandLine|contains': ['rundll32', 'bitsadmin', 'regsvr32', 'cmd.exe /c ', 'cmd.exe /k ', 'cmd.exe /r ', 'cmd /c ', 'cmd /k ', 'cmd /r ', 'powershell', 'pwsh', 'certutil', 'cscript', 'wscript', 'mshta', '\\Users\\Public\\', '\\Windows\\Temp\\', '\\AppData\\Local\\', '%temp%', '%tmp%', '%ProgramData%', '%appdata%', '%comspec%', '%localappdata%']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3c89a1e8-0fba-449e-8f1b-8409d6267ec8

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1047, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/12 high

  • Unknown

BlueMashroom DLL Load

Detects a suspicious DLL loading from AppData Local path as described in BlueMashroom report

Rule ID

process_creation_commandline_106

Query

{'selection': [{'CommandLine|contains|all': ['\\regsvr32', '\\AppData\\Local\\']}, {'CommandLine|contains|all': ['\\AppData\\Local\\', ',DllEntry']}], 'filter_teams': [{'CommandLine|contains': 'AppData\\Local\\Microsoft\\TeamsMeetingAddin\\'}, {'CommandLine|endswith': ['\\x86\\Microsoft.Teams.AddinLoader.dll', '\\x86\\Microsoft.Teams.AddinLoader.dll"', '\\x64\\Microsoft.Teams.AddinLoader.dll', '\\x64\\Microsoft.Teams.AddinLoader.dll"']}], 'filter_webex': {'CommandLine|endswith': '\\AppData\\Local\\WebEx\\WebEx64\\Meetings\\atucfobj.dll'}, 'condition': 'selection and not 1 of filter*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,bd70d3f8-e60e-4d25-89f0-0b5a9cff20e0

Author: Florian Roth (Nextron Systems), Tim Shelton, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1218.010

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/10/02 critical

  • Unlikely

Mshtml DLL RunHTMLApplication Abuse

Detects suspicious command line using the "mshtml.dll" RunHTMLApplication export to run arbitrary code via different protocol handlers (vbscript, javascript, file, htpp...)

Rule ID

process_creation_commandline_107

Query

{'selection': {'CommandLine|contains|all': ['\\..\\', 'mshtml', 'RunHTMLApplication']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,4782eb5a-a513-4523-a0ac-f3082b26ac5c

Author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems), Josh Nickels, frack113, Zaw Min Htun (ZETA)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/14 high

  • Unlikely

Persistence Via TypedPaths - CommandLine

Detects modification addition to the 'TypedPaths' key in the user or admin registry via the commandline. Which might indicate persistence attempt

Rule ID

process_creation_commandline_109

Query

{'selection': {'CommandLine|contains': '\\Software\\Microsoft\\Windows\\CurrentVersion\\Explorer\\TypedPaths'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ec88289a-7e1a-4cc3-8d18-bd1f60e4b9ba

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/22 medium

  • Unknown

UtilityFunctions.ps1 Proxy Dll

Detects the use of a Microsoft signed script executing a managed DLL with PowerShell.

Rule ID

process_creation_commandline_110

Query

{'selection': {'CommandLine|contains': ['UtilityFunctions.ps1', 'RegSnapin ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,0403d67d-6227-4ea8-8145-4e72db7da120

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1216

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/05/28 medium

  • Unknown

Unidentified Attacker November 2018

A sigma rule detecting an unidetefied attacker who used phishing emails to target high profile orgs on November 2018. The Actor shares some TTPs with YYTRIUM/APT29 campaign in 2016.

Rule ID

process_creation_commandline_111

Query

{'selection': {'CommandLine|contains': 'cyzfc.dat,', 'CommandLine|endswith': 'PointFunctionCall'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7453575c-a747-40b9-839b-125a0aae324b

Author: Florian Roth (Nextron Systems), @41thexplorer

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2018/11/20 high N/A

Powershell AMSI Bypass via .NET Reflection

Detects Request to "amsiInitFailed" that can be used to disable AMSI Scanning

Rule ID

process_creation_commandline_112

Query

{'selection': {'CommandLine|contains': ['System.Management.Automation.AmsiUtils', 'amsiInitFailed']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,30edb182-aa75-42c0-b0a9-e998bb29067c

Author: Markus Neis, @Kostastsale

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/08/17 high

  • Unlikely

PowerShell SAM Copy

Detects suspicious PowerShell scripts accessing SAM hives

Rule ID

process_creation_commandline_113

Query

{'selection_1': {'CommandLine|contains|all': ['\\HarddiskVolumeShadowCopy', 'System32\\config\\sam']}, 'selection_2': {'CommandLine|contains': ['Copy-Item', 'cp $_.', 'cpi $_.', 'copy $_.', '.File]::Copy(']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1af57a4b-460a-4738-9034-db68b880c665

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1003.002, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/29 high

  • Some rare backup scenarios

  • PowerShell scripts fixing HiveNightmare / SeriousSAM ACLs

UAC Bypass Using Event Viewer RecentViews

Detects the pattern of UAC Bypass using Event Viewer RecentViews

Rule ID

process_creation_commandline_114

Query

{'selection_path': {'CommandLine|contains': ['\\Event Viewer\\RecentViews', '\\EventV~1\\RecentViews']}, 'selection_redirect': {'CommandLine|contains': '>'}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,30fc8de7-d833-40c4-96b6-28319fbc4f6c

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/11/22 high

  • Unknown

Suspicious Office Token Search Via CLI

Detects possible search for office tokens via CLI by looking for the string "eyJ0eX". This string is used as an anchor to look for the start of the JWT token used by office and similar apps.

Rule ID

process_creation_commandline_115

Query

{'selection': {'CommandLine|contains': ['eyJ0eXAiOi', ' eyJ0eX', ' "eyJ0eX"', " 'eyJ0eX'"]}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6d3a3952-6530-44a3-8554-cf17c116c615

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1528

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/10/25 medium

  • Legitimate command-lines containing the string mentioned in the command-line

Change Default File Association To Executable

Detects when a program changes the default file association of any extension to an executable

Rule ID

process_creation_commandline_116

Query

{'selection': {'CommandLine|contains|all': ['cmd', 'assoc ', 'exefile'], 'CommandLine|contains': [' /c ', ' /r ', ' /k ']}, 'filter': {'CommandLine|contains': '.exe=exefile'}, 'condition': 'selection and not filter'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ae6f14e6-14de-45b0-9f44-c0986f50dc89

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1546.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/06/28 high

  • Unknown

Conti Backup Database

Detects a command used by conti to dump database

Rule ID

process_creation_commandline_118

Query

{'selection_tools': {'CommandLine|contains': ['sqlcmd ', 'sqlcmd.exe']}, 'selection_svr': {'CommandLine|contains': ' -S localhost '}, 'selection_query': {'CommandLine|contains': ['sys.sysprocesses', 'master.dbo.sysdatabases', 'BACKUP DATABASE']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2f47f1fd-0901-466e-a770-3b7092834a1b

Author: frack113

Tactics, Techniques, and Procedures

T1005, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/16 high

  • Unknown

Winnti Pipemon Characteristics

Detects specific process characteristics of Winnti Pipemon malware reported by ESET

Rule ID

process_creation_commandline_119

Query

{'selection1': {'CommandLine|contains': 'setup0.exe -p'}, 'selection2a': {'CommandLine|contains': 'setup.exe'}, 'selection2b': {'CommandLine|endswith': ['-x:0', '-x:1', '-x:2']}, 'condition': 'selection1 or all of selection2*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,73d70463-75c9-4258-92c6-17500fe972f2

Author: Florian Roth (Nextron Systems), oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1574.002

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2020/07/30 critical

  • Legitimate setups that use similar flags

Suspicious ZipExec Execution

ZipExec is a Proof-of-Concept (POC) tool to wrap binary-based tools into a password-protected zip file.

Rule ID

process_creation_commandline_120

Query

{'run': {'CommandLine|contains|all': ['/generic:Microsoft_Windows_Shell_ZipFolder:filename=', '.zip', '/pass:', '/user:']}, 'delete': {'CommandLine|contains|all': ['/delete', 'Microsoft_Windows_Shell_ZipFolder:filename=', '.zip']}, 'condition': 'run or delete'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,90dcf730-1b71-4ae7-9ffc-6fcf62bd0132

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1202, T1218

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/11/07 medium

  • Unknown

NirCmd Tool Execution As LOCAL SYSTEM

Detects the use of NirCmd tool for command execution as SYSTEM user

Rule ID

process_creation_commandline_121

Query

{'selection': {'CommandLine|contains': ' runassystem '}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d9047477-0359-48c9-b8c7-792cedcdc9c4

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1569.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/24 high

  • Legitimate use by administrators

Invoke-Obfuscation Via Use Clip

Detects Obfuscated Powershell via use Clip.exe in Scripts

Rule ID

process_creation_commandline_122

Query

{'selection': {'CommandLine|contains|all': ['echo', 'clip', '&&'], 'CommandLine|contains': ['clipboard', 'invoke', 'i`', 'n`', 'v`', 'o`', 'k`', 'e`']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e1561947-b4e3-4a74-9bdd-83baed21bdb5

Author: Nikita Nazarov, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/09 high

  • Unknown

PowerShell Base64 Encoded Shellcode

Detects Base64 encoded Shellcode

Rule ID

process_creation_commandline_123

Query

{'selection': {'CommandLine|contains': ['OiCAAAAYInlM', 'OiJAAAAYInlM']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2d117e49-e626-4c7c-bd1f-c3c0147774c8

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2018/11/17 critical

  • Unknown

Ryuk Ransomware

Detects Ryuk ransomware activity

Rule ID

process_creation_commandline_124

Query

{'selection': {'CommandLine|contains|all': ['Microsoft\\Windows\\CurrentVersion\\Run', 'C:\\users\\Public\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c37510b8-2107-4b78-aa32-72f251e7a844

Author: Florian Roth (Nextron Systems), Vasiliy Burov, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1547.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2019/12/16 high

  • Unlikely

Arbitrary Shell Command Execution Via Settingcontent-Ms

The .SettingContent-ms file type was introduced in Windows 10 and allows a user to create "shortcuts" to various Windows 10 setting pages. These files are simply XML and contain paths to various Windows 10 settings binaries.

Rule ID

process_creation_commandline_125

Query

{'selection': {'CommandLine|contains': '.SettingContent-ms'}, 'filter': {'CommandLine|contains': 'immersivecontrolpanel'}, 'condition': 'selection and not filter'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,24de4f3b-804c-4165-b442-5a06a2302c7e

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1204, T1566.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2020/03/13 medium

  • Unknown

Base64 Encoded Reflective Assembly Load

Detects base64 encoded .NET reflective loading of Assembly

Rule ID

process_creation_commandline_127

Query

{'selection': {'CommandLine|contains': ['WwBSAGUAZgBsAGUAYwB0AGkAbwBuAC4AQQBzAHMAZQBtAGIAbAB5AF0AOgA6AEwAbwBhAGQAKA', 'sAUgBlAGYAbABlAGMAdABpAG8AbgAuAEEAcwBzAGUAbQBiAGwAeQBdADoAOgBMAG8AYQBkACgA', 'bAFIAZQBmAGwAZQBjAHQAaQBvAG4ALgBBAHMAcwBlAG0AYgBsAHkAXQA6ADoATABvAGEAZAAoA', 'AFsAcgBlAGYAbABlAGMAdABpAG8AbgAuAGEAcwBzAGUAbQBiAGwAeQBdADoAOgAoACIATABvAGEAZAAiAC', 'BbAHIAZQBmAGwAZQBjAHQAaQBvAG4ALgBhAHMAcwBlAG0AYgBsAHkAXQA6ADoAKAAiAEwAbwBhAGQAIgAp', 'AWwByAGUAZgBsAGUAYwB0AGkAbwBuAC4AYQBzAHMAZQBtAGIAbAB5AF0AOgA6ACgAIgBMAG8AYQBkACIAK', 'WwBSAGUAZgBsAGUAYwB0AGkAbwBuAC4AQQBzAHMAZQBtAGIAbAB5AF0AOgA6ACgAIgBMAG8AYQBkACIAKQ', 'sAUgBlAGYAbABlAGMAdABpAG8AbgAuAEEAcwBzAGUAbQBiAGwAeQBdADoAOgAoACIATABvAGEAZAAiACkA', 'bAFIAZQBmAGwAZQBjAHQAaQBvAG4ALgBBAHMAcwBlAG0AYgBsAHkAXQA6ADoAKAAiAEwAbwBhAGQAIgApA', 'WwByAGUAZgBsAGUAYwB0AGkAbwBuAC4AYQBzAHMAZQBtAGIAbAB5AF0AOgA6AEwAbwBhAGQAKA', 'sAcgBlAGYAbABlAGMAdABpAG8AbgAuAGEAcwBzAGUAbQBiAGwAeQBdADoAOgBMAG8AYQBkACgA', 'bAHIAZQBmAGwAZQBjAHQAaQBvAG4ALgBhAHMAcwBlAG0AYgBsAHkAXQA6ADoATABvAGEAZAAoA']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,62b7ccc9-23b4-471e-aa15-6da3663c4d59

Author: Christian Burkard (Nextron Systems), pH-T (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003, T1620

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/01 high

  • Unlikely

Suspicious NT Resource Kit Auditpol Usage

Threat actors can use an older version of the auditpol binary available inside the NT resource kit to change audit policy configuration to impair detection capability. This can be carried out by selectively disabling/removing certain audit policies as well as restoring a custom policy owned by the threat actor.

Rule ID

process_creation_commandline_128

Query

{'selection': {'CommandLine|contains': ['/logon:none', '/system:none', '/sam:none', '/privilege:none', '/object:none', '/process:none', '/policy:none']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c6c56ada-612b-42d1-9a29-adad3c5c2c1e

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/12/18 high

  • Unknown

Weak or Abused Passwords In CLI

Detects weak passwords or often abused passwords (seen used by threat actors) via the CLI. An example would be a threat actor creating a new user via the net command and providing the password inline

Rule ID

process_creation_commandline_129

Query

{'selection': {'CommandLine|contains': ['Asd123.aaaa', 'password123', '123456789', 'P@ssw0rd!']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,91edcfb1-2529-4ac2-9ecc-7617f895c7e4

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/14 medium

  • Legitimate usage of the passwords by users via commandline (should be discouraged)

  • Other currently unknown false positives

Suspicious Encoded Obfuscated LOAD String

Detects suspicious base64 encoded and obbfuscated LOAD string often used for reflection.assembly load

Rule ID

process_creation_commandline_130

Query

{'selection': {'CommandLine|contains': ['OgA6ACgAIgBMACIAKwAiAG8AYQBkACIAKQ', 'oAOgAoACIATAAiACsAIgBvAGEAZAAiACkA', '6ADoAKAAiAEwAIgArACIAbwBhAGQAIgApA', 'OgA6ACgAIgBMAG8AIgArACIAYQBkACIAKQ', 'oAOgAoACIATABvACIAKwAiAGEAZAAiACkA', '6ADoAKAAiAEwAbwAiACsAIgBhAGQAIgApA', 'OgA6ACgAIgBMAG8AYQAiACsAIgBkACIAKQ', 'oAOgAoACIATABvAGEAIgArACIAZAAiACkA', '6ADoAKAAiAEwAbwBhACIAKwAiAGQAIgApA', 'OgA6ACgAJwBMACcAKwAnAG8AYQBkACcAKQ', 'oAOgAoACcATAAnACsAJwBvAGEAZAAnACkA', '6ADoAKAAnAEwAJwArACcAbwBhAGQAJwApA', 'OgA6ACgAJwBMAG8AJwArACcAYQBkACcAKQ', 'oAOgAoACcATABvACcAKwAnAGEAZAAnACkA', '6ADoAKAAnAEwAbwAnACsAJwBhAGQAJwApA', 'OgA6ACgAJwBMAG8AYQAnACsAJwBkACcAKQ', 'oAOgAoACcATABvAGEAJwArACcAZAAnACkA', '6ADoAKAAnAEwAbwBhACcAKwAnAGQAJwApA']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,9c0295ce-d60d-40bd-bd74-84673b7592b1

Author: pH-T (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/01 high

  • Unlikely

RunXCmd Tool Execution As System

Detects the use of RunXCmd tool for command execution

Rule ID

process_creation_commandline_131

Query

{'selection': {'CommandLine|contains|all': [' /account=system ', '/exec=']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,93199800-b52a-4dec-b762-75212c196542

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1569.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/24 high

  • Legitimate use by administrators

Base64 Encoded Listing of Shadowcopy

Detects base64 encoded listing Win32_Shadowcopy

Rule ID

process_creation_commandline_132

Query

{'selection': {'CommandLine|contains': ['VwBpAG4AMwAyAF8AUwBoAGEAZABvAHcAYwBvAHAAeQAgAHwAIABGAG8AcgBFAGEAYwBoAC0ATwBiAGoAZQBjAHQA', 'cAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0A', 'XAGkAbgAzADIAXwBTAGgAYQBkAG8AdwBjAG8AcAB5ACAAfAAgAEYAbwByAEUAYQBjAGgALQBPAGIAagBlAGMAdA']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,47688f1b-9f51-4656-b013-3cc49a166a36

Author: Christian Burkard (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/03/01 high

  • Unlikely

MERCURY Command Line Patterns

Detects suspicious command line patterns as seen being used by MERCURY threat actor

Rule ID

process_creation_commandline_133

Query

{'selection_base': {'CommandLine|contains|all': ['-exec bypass -w 1 -enc', 'UwB0AGEAcgB0AC0ASgBvAGIAIAAtAFMAYwByAGkAcAB0AEIAbABvAGMAaw']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a62298a3-1fe0-422f-9a68-ffbcbc5a123d

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/26 high

  • Unknown

DTRACK Process Creation

Detects specific process parameters as seen in DTRACK infections

Rule ID

process_creation_commandline_134

Query

{'selection': {'CommandLine|contains': ' echo EEEE > '}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f1531fa4-5b84-4342-8f68-9cf3fdbd83d4

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1490

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2019/10/30 critical

  • Unlikely

Suspicious Netsh Discovery Command

Adversaries may look for details about the network configuration and settings of systems they access or through information discovery of remote systems

Rule ID

process_creation_commandline_135

Query

{'selection': {'CommandLine|contains|all': ['netsh ', 'show ', 'firewall '], 'CommandLine|contains': ['config ', 'state ', 'rule ', 'name=all']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,0e4164da-94bc-450d-a7be-a4b176179f1f

Author: frack113, Christopher Peacock '@securepeacock', SCYTHE '@scythe_io'

Tactics, Techniques, and Procedures

T1016, T1059.003

References

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/12/07 low

  • Administrative activity

F-Secure C3 Load by Rundll32

F-Secure C3 produces DLLs with a default exported StartNodeRelay function.

Rule ID

process_creation_commandline_136

Query

{'selection': {'CommandLine|contains|all': ['rundll32.exe', '.dll', 'StartNodeRelay']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b18c9d4c-fac9-4708-bd06-dd5bfacf200f

Author: Alfie Champion (ajpc500)

Tactics, Techniques, and Procedures

T1059.003, T1218.011

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/06/02 critical

  • Unknown

Suspicious RunAs-Like Flag Combination

Detects suspicious command line flags that let the user set a target user and command as e.g. seen in PsExec-like tools

Rule ID

process_creation_commandline_137

Query

{'selection_user': {'CommandLine|contains': [' -u system ', ' --user system ', ' -u NT', ' -u "NT', " -u 'NT", ' --system ', ' -u administrator ']}, 'selection_command': {'CommandLine|contains': [' -c cmd', ' -c "cmd', ' -c powershell', ' -c "powershell', ' --command cmd', ' --command powershell', ' -c whoami', ' -c wscript', ' -c cscript']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,50d66fb0-03f8-4da0-8add-84e77d12a020

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/11/11 medium

  • Unknown

Stop Or Remove Antivirus Service

Detects usage of 'Stop-Service' or 'Remove-Service' powershell cmdlet to disable AV services. Adversaries may disable security tools to avoid possible detection of their tools and activities by stopping antivirus service

Rule ID

process_creation_commandline_138

Query

{'selection_action': {'CommandLine|contains': ['Stop-Service ', 'Remove-Service ']}, 'selection_product': {'CommandLine|contains': [' McAfeeDLPAgentService', ' Trend Micro Deep Security Manager', ' TMBMServer', 'Sophos', 'Symantec']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6783aa9e-0dc3-49d4-a94a-8b39c5fd700b

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/07/07 high

  • Unknown

Adwind RAT / JRAT

Detects javaw.exe in AppData folder as used by Adwind / JRAT

Rule ID

process_creation_commandline_139

Query

{'selection': [{'CommandLine|contains|all': ['\\AppData\\Roaming\\Oracle', '\\java', '.exe ']}, {'CommandLine|contains|all': ['cscript.exe', 'Retrive', '.vbs ']}], 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1fac1481-2dbc-48b2-9096-753c49b4ec71

Author: Florian Roth (Nextron Systems), Tom Ueltschi, Jonhnathan Ribeiro, oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1059.005, T1059.007

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2017/11/10 high N/A

Suspicious AdvancedRun Runas Priv User

Detects the execution of AdvancedRun utility in the context of the TrustedInstaller, SYSTEM, Local Service or Network Service accounts

Rule ID

process_creation_commandline_140

Query

{'selection': {'CommandLine|contains': ['/EXEFilename', '/CommandLine']}, 'selection_runas': [{'CommandLine|contains': [' /RunAs 8 ', ' /RunAs 4 ', ' /RunAs 10 ', ' /RunAs 11 ']}, {'CommandLine|endswith': ['/RunAs 8', '/RunAs 4', '/RunAs 10', '/RunAs 11']}], 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,fa00b701-44c6-4679-994d-5a18afa8a707

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/01/20 high

  • Unknown

ShimCache Flush

Detects actions that clear the local ShimCache and remove forensic evidence

Rule ID

process_creation_commandline_141

Query

{'selection1a': {'CommandLine|contains|all': ['rundll32', 'apphelp.dll']}, 'selection1b': {'CommandLine|contains': ['ShimFlushCache', '#250']}, 'selection2a': {'CommandLine|contains|all': ['rundll32', 'kernel32.dll']}, 'selection2b': {'CommandLine|contains': ['BaseFlushAppcompatCache', '#46']}, 'condition': '( selection1a and selection1b ) or ( selection2a and selection2b )'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b0524451-19af-4efa-a46f-562a977f792e

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1112

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2021/02/01 high

  • Unknown

Sliver C2 Implant Activity Pattern

Detects process activity patterns as seen being used by Sliver C2 framework implants

Rule ID

process_creation_commandline_142

Query

{'selection_cmdline': {'CommandLine|contains': '-NoExit -Command [Console]::OutputEncoding=[Text.UTF8Encoding]::UTF8'}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,42333b2c-b425-441c-b70e-99404a17170f

Author: Nasreddine Bencherchali (Nextron Systems), Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059, T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/25 critical

  • Unlikely

Disabled IE Security Features

Detects command lines that indicate unwanted modifications to registry keys that disable important Internet Explorer security features

Rule ID

process_creation_commandline_143

Query

{'selection1': {'CommandLine|contains|all': [' -name IEHarden ', ' -value 0 ']}, 'selection2': {'CommandLine|contains|all': [' -name DEPOff ', ' -value 1 ']}, 'selection3': {'CommandLine|contains|all': [' -name DisableFirstRunCustomize ', ' -value 2 ']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,fb50eb7a-5ab1-43ae-bcc9-091818cb8424

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/06/19 high

  • Unknown, maybe some security software installer disables these features temporarily

Invoke-Obfuscation RUNDLL LAUNCHER

Detects Obfuscated Powershell via RUNDLL LAUNCHER

Rule ID

process_creation_commandline_144

Query

{'selection': {'CommandLine|contains|all': ['rundll32.exe', 'shell32.dll', 'shellexec_rundll', 'powershell']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,056a7ee1-4853-4e67-86a0-3fd9ceed7555

Author: Timur Zinniatullin, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/18 medium

  • Unknown

Tasks Folder Evasion

The Tasks folder in system32 and syswow64 are globally writable paths. Adversaries can take advantage of this and load or influence any script hosts or ANY .NET Application in Tasks to load and execute a custom assembly into cscript, wscript, regsvr32, mshta, eventvwr

Rule ID

process_creation_commandline_145

Query

{'selection1': {'CommandLine|contains': ['echo ', 'copy ', 'type ', 'file createnew']}, 'selection2': {'CommandLine|contains': [' C:\\Windows\\System32\\Tasks\\', ' C:\\Windows\\SysWow64\\Tasks\\']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cc4e02ba-9c06-48e2-b09e-2500cace9ae0

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1574.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/01/13 high

  • Unknown

Sofacy Trojan Loader Activity

Detects Trojan loader activity as used by APT28

Rule ID

process_creation_commandline_146

Query

{'selection1': {'CommandLine|contains|all': ['rundll32.exe', '%APPDATA%\\']}, 'selection2': [{'CommandLine|contains': '.dat",'}, {'CommandLine|endswith': ['.dll",#1', '.dll #1', '.dll" #1']}], 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,ba778144-5e3d-40cf-8af9-e28fb1df1e20

Author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1059.003, T1218.011

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/03/01 high

  • Unknown

Suspicious Commandline Escape

Detects suspicious process that use escape characters

Rule ID

process_creation_commandline_147

Query

{'selection': {'CommandLine|contains': ['h^t^t^p', 'h"t"t"p']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f0cdd048-82dc-4f7a-8a7a-b87a52b6d0fd

Author: juju4

Tactics, Techniques, and Procedures

T1059.003, T1140

References

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/12/11 low

  • False positives depend on scripts and administrative tools used in the monitored environment

Suspicious Rundll32 Invoking Inline VBScript

Detects suspicious process related to rundll32 based on command line that invokes inline VBScript as seen being used by UNC2452

Rule ID

process_creation_commandline_148

Query

{'selection': {'CommandLine|contains|all': ['rundll32.exe', 'Execute', 'RegRead', 'window.close']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,1cc50f3f-1fc8-4acf-b2e9-6f172e1fdebd

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1055, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/03/05 high

  • Unknown

Disabled Volume Snapshots

Detects commands that temporarily turn off Volume Snapshots

Rule ID

process_creation_commandline_149

Query

{'selection': {'CommandLine|contains|all': ['reg', ' add ', '\\Services\\VSS\\Diag', '/d Disabled']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,dee4af55-1f22-4e1d-a9d2-4bdc7ecb472a

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/01/28 high

  • Legitimate administration

PowerShell Get-Clipboard Cmdlet Via CLI

Detects usage of the 'Get-Clipboard' cmdlet via CLI

Rule ID

process_creation_commandline_150

Query

{'selection': {'CommandLine|contains': 'Get-Clipboard'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b9aeac14-2ffd-4ad3-b967-1354a4e628c3

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1115

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/02 medium

  • Unknown

Suspicious Reg Add BitLocker

Detects suspicious addition to BitLocker related registry keys via the reg.exe utility

Rule ID

process_creation_commandline_151

Query

{'selection': {'CommandLine|contains|all': ['REG', 'ADD', '\\SOFTWARE\\Policies\\Microsoft\\FVE', '/v', '/f'], 'CommandLine|contains': ['EnableBDEWithNoTPM', 'UseAdvancedStartup', 'UseTPM', 'UseTPMKey', 'UseTPMKeyPIN', 'RecoveryKeyMessageSource', 'UseTPMPIN', 'RecoveryKeyMessage']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,0e0255bf-2548-47b8-9582-c0955c9283f5

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1486

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/11/15 high

  • Unlikely

Suspicious Reconnaissance Activity Using Get-LocalGroupMember Cmdlet

Detects suspicious reconnaissance command line activity on Windows systems using the PowerShell Get-LocalGroupMember Cmdlet

Rule ID

process_creation_commandline_152

Query

{'selection_cmdlet': {'CommandLine|contains': 'Get-LocalGroupMember '}, 'selection_group': {'CommandLine|contains': ['domain admins', ' administrator', ' administrateur', 'enterprise admins', 'Exchange Trusted Subsystem', 'Remote Desktop Users', 'Utilisateurs du Bureau à distance', 'Usuarios de escritorio remoto']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c8a180d6-47a3-4345-a609-53f9c3d834fc

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1087.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/10/10 medium

  • Administrative activity

Conti Ransomware Execution

Conti ransomware command line ioc

Rule ID

process_creation_commandline_153

Query

{'selection': {'CommandLine|contains|all': ['-m ', '-net ', '-size ', '-nomutex ', '-p \\\\', '$']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,689308fc-cfba-4f72-9897-796c1dc61487

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1486

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/10/12 critical

  • Unlikely

Snatch Ransomware

Detects specific process characteristics of Snatch ransomware word document droppers

Rule ID

process_creation_commandline_154

Query

{'selection': {'CommandLine|contains': ['shutdown /r /f /t 00', 'net stop SuperBackupMan']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,5325945e-f1f0-406e-97b8-65104d393fff

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1204

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2020/08/26 high

  • Scripts that shutdown the system immediately and reboot them in safe mode are unlikely

Copy from Volume Shadow Copy

Detects a copy execution that targets a shadow copy (sometimes used to copy registry hives that are in use)

Rule ID

process_creation_commandline_155

Query

{'selection': {'CommandLine|contains': 'copy \\\\?\\GLOBALROOT\\Device\\HarddiskVolumeShadowCopy'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c73124a7-3e89-44a3-bdc1-25fe4df754b1

Author: Max Altgelt (Nextron Systems), Tobias Michalski (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1490

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/08/09 medium

  • Some rare backup scenarios

Suspicious VBScript UN2452 Pattern

Detects suspicious inline VBScript keywords as used by UNC2452

Rule ID

process_creation_commandline_156

Query

{'selection': {'CommandLine|contains|all': ['Execute', 'CreateObject', 'RegRead', 'window.close', '\\Microsoft\\Windows\\CurrentVersion']}, 'filter': {'CommandLine|contains': '\\Software\\Microsoft\\Windows\\CurrentVersion\\Run'}, 'condition': 'selection and not filter'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,20c3f09d-c53d-4e85-8b74-6aa50e2f1b61

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1547.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/03/05 high

  • Unknown

Sensitive Registry Access via Volume Shadow Copy

Detects a command that accesses password storing registry hives via volume shadow backups

Rule ID

process_creation_commandline_157

Query

{'selection_1': {'CommandLine|contains': '\\\\?\\GLOBALROOT\\Device\\HarddiskVolumeShadowCopy'}, 'selection_2': {'CommandLine|contains': ['\\NTDS.dit', '\\SYSTEM', '\\SECURITY', 'C:\\tmp\\log']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f57f8d16-1f39-4dcb-a604-6c73d9b54b3d

Author: Max Altgelt (Nextron Systems), Tobias Michalski (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1490

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/08/09 high

  • Some rare backup scenarios

Abusable Invoke-ATHRemoteFXvGPUDisablementCommand

RemoteFXvGPUDisablement.exe is an abusable, signed PowerShell host executable that was introduced in Windows 10 and Server 2019 (OS Build 17763.1339).

Rule ID

process_creation_commandline_158

Query

{'selection_cmd': {'CommandLine|contains': 'Invoke-ATHRemoteFXvGPUDisablementCommand '}, 'selection_opt': {'CommandLine|contains': ['-ModuleName ', '-ModulePath ', '-ScriptBlock ', '-RemoteFXvGPUDisablementFilePath']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,a6fc3c46-23b8-4996-9ea2-573f4c4d88c5

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1218

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/13 medium

  • Unknown

Execute From Alternate Data Streams

Detects execution from an Alternate Data Stream (ADS). Adversaries may use NTFS file attributes to hide their malicious data in order to evade detection

Rule ID

process_creation_commandline_159

Query

{'selection_stream': {'CommandLine|contains': 'txt:'}, 'selection_tools_type': {'CommandLine|contains|all': ['type ', ' > ']}, 'selection_tools_makecab': {'CommandLine|contains|all': ['makecab ', '.cab']}, 'selection_tools_reg': {'CommandLine|contains|all': ['reg ', ' export ']}, 'selection_tools_regedit': {'CommandLine|contains|all': ['regedit ', ' /E ']}, 'selection_tools_esentutl': {'CommandLine|contains|all': ['esentutl ', ' /y ', ' /d ', ' /o ']}, 'condition': 'selection_stream and (1 of selection_tools_*)'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7f43c430-5001-4f8b-aaa9-c3b88f18fa5c

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1564.004

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/09/01 medium

  • Unknown

Potential Tampering With Security Products Via WMIC

Detects uninstallation or termination of security products using the WMIC utility

Rule ID

process_creation_commandline_160

Query

{'selection_cli_1': {'CommandLine|contains|all': ['wmic', 'product where ', 'call uninstall', '/nointeractive']}, 'selection_cli_2': {'CommandLine|contains|all': ['wmic', 'caption like '], 'CommandLine|contains': ['call delete', 'call terminate']}, 'selection_cli_3': {'CommandLine|contains|all': ['process ', 'where ', 'delete']}, 'selection_product': {'CommandLine|contains': ['%carbon%', '%cylance%', '%endpoint%', '%eset%', '%malware%', '%Sophos%', '%symantec%', 'Antivirus', 'AVG ', 'Carbon Black', 'CarbonBlack', 'Cb Defense Sensor 64-bit', 'Crowdstrike Sensor', 'Cylance ', 'Dell Threat Defense', 'DLP Endpoint', 'Endpoint Detection', 'Endpoint Protection', 'Endpoint Security', 'Endpoint Sensor', 'ESET File Security', 'LogRhythm System Monitor Service', 'Malwarebytes', 'McAfee Agent', 'Microsoft Security Client', 'Sophos Anti-Virus', 'Sophos AutoUpdate', 'Sophos Credential Store', 'Sophos Management Console', 'Sophos Management Database', 'Sophos Management Server', 'Sophos Remote Management System', 'Sophos Update Manager', 'Threat Protection', 'VirusScan', 'Webroot SecureAnywhere', 'Windows Defender']}, 'condition': '1 of selection_cli_* and selection_product'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,847d5ff3-8a31-4737-a970-aeae8fe21765

Author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/01/30 high

  • Legitimate administration

Potential Download/Upload Activity Using Type Command

Detects usage of the "type" command to download/upload data from WebDAV server

Rule ID

process_creation_commandline_161

Query

{'selection_upload': {'CommandLine|contains|all': ['type ', ' > \\\\']}, 'selection_download': {'CommandLine|contains|all': ['type \\\\', ' > ']}, 'condition': '1 of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,aa0b3a82-eacc-4ec3-9150-b5a9a3e3f82f

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1105

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/14 medium

  • Unknown

Invoke-Obfuscation Via Stdin

Detects Obfuscated Powershell via Stdin in Scripts

Rule ID

process_creation_commandline_162

Query

{'selection': {'CommandLine|contains|all': ['set', '&&'], 'CommandLine|contains': ['environment', 'invoke', 'input']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,9c14c9fa-1a63-4a64-8e57-d19280559490

Author: Nikita Nazarov, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/12 high

  • Unknown

Wscript Shell Run In CommandLine

Detects the presence of the keywords "Wscript", "Shell" and "Run" in the command, which could indicate a suspicious activity

Rule ID

process_creation_commandline_163

Query

{'selection': {'CommandLine|contains|all': ['Wscript.', '.Shell', '.Run']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2c28c248-7f50-417a-9186-a85b223010ee

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/31 high

  • Rare legitimate inline scripting by some administrators

Reg Add RUN Key

Detects suspicious command line reg.exe tool adding key to RUN key in Registry

Rule ID

process_creation_commandline_164

Query

{'selection': {'CommandLine|contains|all': ['reg', ' ADD ', 'Software\\Microsoft\\Windows\\CurrentVersion\\Run']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,de587dce-915e-4218-aac4-835ca6af6f70

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1547.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/06/28 medium

  • Legitimate software automatically (mostly, during installation) sets up autorun keys for legitimate reasons.

  • Legitimate administrator sets up autorun keys for legitimate reasons.

  • Discord

Disable or Delete Windows Eventlog

Detects command that is used to disable or delete Windows eventlog via logman Windows utility

Rule ID

process_creation_commandline_165

Query

{'selection_tools': {'CommandLine|contains': 'logman '}, 'selection_action': {'CommandLine|contains': ['stop ', 'delete ']}, 'selection_service': {'CommandLine|contains': 'EventLog-System'}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cd1f961e-0b96-436b-b7c6-38da4583ec00

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1070.001, T1562.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/02/11 high

  • Legitimate deactivation by administrative staff

  • Installer tools that disable services, e.g. before log collection agent installation

Java Running with Remote Debugging

Detects a JAVA process running with remote debugging allowing more than just localhost to connect

Rule ID

process_creation_commandline_166

Query

{'selection_jdwp_transport': {'CommandLine|contains': 'transport=dt_socket,address='}, 'selection_old_jvm_version': {'CommandLine|contains': ['jre1.', 'jdk1.']}, 'exclusion': [{'CommandLine|contains': 'address=127.0.0.1'}, {'CommandLine|contains': 'address=localhost'}], 'condition': 'all of selection* and not exclusion'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,8f88e3f6-2a49-48f5-a5c4-2f7eedf78710

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1203

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/01/16 medium

  • Unknown

Monitoring For Persistence Via BITS

BITS will allow you to schedule a command to execute after a successful download to notify you that the job is finished. When the job runs on the system the command specified in the BITS job will be executed. This can be abused by actors to create a backdoor within the system and for persistence. It will be chained in a BITS job to schedule the download of malware/additional binaries and execute the program after being downloaded

Rule ID

process_creation_commandline_167

Query

{'selection_1': {'CommandLine|contains|all': ['bitsadmin', '/SetNotifyCmdLine'], 'CommandLine|contains': ['%COMSPEC%', 'cmd.exe', 'regsvr32.exe']}, 'selection_2': {'CommandLine|contains|all': ['bitsadmin', '/Addfile'], 'CommandLine|contains': ['http:', 'https:', 'ftp:', 'ftps:']}, 'condition': '1 of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b9cbbc17-d00d-4e3d-a827-b06d03d2380d

Author: Sreeman

Tactics, Techniques, and Procedures

T1059.003, T1197

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/29 medium

  • Unknown

Obfuscated Command Line Using Special Unicode Characters

Adversaries may attempt to make an executable or file difficult to discover or analyze by encrypting, encoding, or otherwise obfuscating its contents on the system or in transit.

Rule ID

process_creation_commandline_168

Query

{'selection': {'CommandLine|contains': ['â', '€', '£', '¯', '®', 'µ', '¶']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e0552b19-5a83-4222-b141-b36184bb8d79

Author: frack113, Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1027, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/15 high

  • Unknown

Compress Data and Lock With Password for Exfiltration With 7-ZIP

An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities

Rule ID

process_creation_commandline_169

Query

{'selection_7z': {'CommandLine|contains': ['7z.exe', '7za.exe']}, 'selection_password': {'CommandLine|contains': ' -p'}, 'selection_action': {'CommandLine|contains': [' a ', ' u ']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,9fbf5927-5261-4284-a71d-f681029ea574

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1560.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/27 medium

  • Command line parameter combinations that contain all included strings

Suspicious DIR Execution

Detects usage of the "dir" command that's part of windows batch/cmd to collect information about directories

Rule ID

process_creation_commandline_170

Query

{'selection': {'CommandLine|contains|all': ['dir ', ' /s', ' /b']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,7c9340a9-e2ee-4e43-94c5-c54ebbea1006

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1217

References

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/12/13 low

  • Unknown

Suspicious Diantz Download and Compress Into a CAB File

Download and compress a remote file and store it in a cab file on local machine.

Rule ID

process_creation_commandline_172

Query

{'selection': {'CommandLine|contains|all': ['diantz.exe', ' \\\\', '.cab']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,185d7418-f250-42d0-b72e-0c8b70661e93

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1105

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/11/26 medium

  • Unknown

Invoke-Obfuscation VAR++ LAUNCHER OBFUSCATION

Detects Obfuscated Powershell via VAR++ LAUNCHER

Rule ID

process_creation_commandline_173

Query

{'selection': {'CommandLine|contains|all': ['&&set', 'cmd', '/c', '-f'], 'CommandLine|contains': ['{0}', '{1}', '{2}', '{3}', '{4}', '{5}']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e9f55347-2928-4c06-88e5-1a7f8169942e

Author: Timur Zinniatullin, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/13 high

  • Unknown

Ps.exe Renamed SysInternals Tool

Detects renamed SysInternals tool execution with a binary named ps.exe as used by Dragonfly APT group and documented in TA17-293A report

Rule ID

process_creation_commandline_174

Query

{'selection': {'CommandLine': 'ps.exe -accepteula'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,18da1007-3f26-470f-875d-f77faf1cab31

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1036.003, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2017/10/22 high

  • Renamed SysInternals tool

TropicTrooper Campaign November 2018

Detects TropicTrooper activity, an actor who targeted high-profile organizations in the energy and food and beverage sectors in Asia

Rule ID

process_creation_commandline_175

Query

{'selection': {'CommandLine|contains': 'abCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCc'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,8c7090c3-e0a0-4944-bd08-08c3a0cecf79

Author: @41thexplorer, Microsoft Defender ATP

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
stable 2019/11/12 high N/A

Shadow Copies Access via Symlink

Shadow Copies storage symbolic link creation using operating systems utilities

Rule ID

process_creation_commandline_176

Query

{'selection': {'CommandLine|contains|all': ['mklink', 'HarddiskVolumeShadowCopy']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,40b19fa6-d835-400c-b301-41f3a2baacaf

Author: Teymur Kheirkhabarov, oscd.community

Tactics, Techniques, and Procedures

T1003.002, T1003.003, T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/10/22 medium

  • Legitimate administrator working with shadow copies, access for backup purposes

Suspicious Desktopimgdownldr Command

Detects a suspicious Microsoft desktopimgdownldr execution with parameters used to download files from the Internet

Rule ID

process_creation_commandline_177

Query

{'selection1': {'CommandLine|contains': ' /lockscreenurl:'}, 'selection1_filter': {'CommandLine|contains': ['.jpg', '.jpeg', '.png']}, 'selection_reg': {'CommandLine|contains|all': ['reg delete', '\\PersonalizationCSP']}, 'condition': '( selection1 and not selection1_filter ) or selection_reg'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,bb58aa4a-b80b-415a-a2c0-2f65a4c81009

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1105

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/07/03 high

  • False positives depend on scripts and administrative tools used in the monitored environment

Rundll32 JS RunHTMLApplication Pattern

Detects suspicious command line patterns used when rundll32 is used to run JavaScript code

Rule ID

process_creation_commandline_178

Query

{'selection1': {'CommandLine|contains|all': ['rundll32', 'javascript', '..\\..\\mshtml,RunHTMLApplication']}, 'selection2': {'CommandLine|contains': ';document.write();GetObject("script'}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,9f06447a-a33a-4cbe-a94f-a3f43184a7a3

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/01/14 high

  • Unlikely

ADCSPwn Hack Tool

Detects command line parameters used by ADCSPwn, a tool to escalate privileges in an active directory network by coercing authenticate from machine accounts and relaying to the certificate service

Rule ID

process_creation_commandline_179

Query

{'selection': {'CommandLine|contains|all': [' --adcs ', ' --port ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cd8c163e-a19b-402e-bdd5-419ff5859f12

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1557.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/31 high

  • Unlikely

Potential PowerShell Execution Policy Tampering - ProcCreation

Detects changes to the PowerShell execution policy registry key in order to bypass signing requirements for script execution from the CommandLine

Rule ID

process_creation_commandline_180

Query

{'selection_path': {'CommandLine|contains': ['\\ShellIds\\Microsoft.PowerShell\\ExecutionPolicy', '\\Policies\\Microsoft\\Windows\\PowerShell\\ExecutionPolicy']}, 'selection_values': {'CommandLine|contains': ['Bypass', 'RemoteSigned', 'Unrestricted']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,cf2e938e-9a3e-4fe8-a347-411642b28a9f

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2023/01/11 high

  • Unknown

CrackMapExec PowerShell Obfuscation

The CrachMapExec pentesting framework implements a PowerShell obfuscation with some static strings detected by this rule.

Rule ID

process_creation_commandline_181

Query

{'powershell_execution': {'CommandLine|contains': ['powershell.exe', 'pwsh.exe']}, 'snippets': {'CommandLine|contains': ['join*split', "( $ShellId[1]+$ShellId[13]+'x')", '( $PSHome[*]+$PSHOME[*]+', "( $env:Public[13]+$env:Public[5]+'x')", "( $env:ComSpec[4,*,25]-Join'')", "[1,3]+'x'-Join'')"]}, 'condition': 'powershell_execution and snippets'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6f8b3439-a203-45dc-a88b-abf57ea15ccf

Author: Thomas Patzke

Tactics, Techniques, and Procedures

T1027.005, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/22 high

  • Unknown

Copy DMP Files From Share

Detects usage of the copy command to copy files with the .dmp extensions from a remote share

Rule ID

process_creation_commandline_182

Query

{'selection': {'CommandLine|contains|all': ['.dmp', 'copy ', ' \\\\'], 'CommandLine|contains': [' /c ', ' /r ', ' /k ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,044ba588-dff4-4918-9808-3f95e8160606

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/27 high

  • Unknown

Deletion of Volume Shadow Copies via WMI with PowerShell

Detects deletion of Windows Volume Shadow Copies with PowerShell code and Get-WMIObject. This technique is used by numerous ransomware families such as Sodinokibi/REvil

Rule ID

process_creation_commandline_183

Query

{'selection_get': {'CommandLine|contains': ['Get-WmiObject', 'gwmi', 'Get-CimInstance', 'gcim']}, 'selection_shadowcopy': {'CommandLine|contains': 'Win32_Shadowcopy'}, 'selection_delete': {'CommandLine|contains': ['.Delete()', 'Remove-WmiObject', 'rwmi', 'Remove-CimInstance', 'rcim']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,21ff4ca9-f13a-41ad-b828-0077b2af2e40

Author: Tim Rauch, Elastic (idea)

Tactics, Techniques, and Procedures

T1059.003, T1490

References

Severity

80

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/20 high

  • Unknown

ScreenConnect Remote Access

Detects ScreenConnect program starts that establish a remote access to that system (not meeting, not remote support)

Rule ID

process_creation_commandline_184

Query

{'selection': {'CommandLine|contains|all': ['e=Access&', 'y=Guest&', '&p=', '&c=', '&k=']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,75bfe6e6-cd8e-429e-91d3-03921e1d7962

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1133

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/02/11 high

  • Legitimate use by administrative staff

Curl Start Combination

Adversaries can use curl to download payloads remotely and execute them. Curl is included by default in Windows 10 build 17063 and later.

Rule ID

process_creation_commandline_185

Query

{'selection': {'CommandLine|contains|all': [' /c ', 'curl ', 'http', '-o', '&']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,21dd6d38-2b18-4453-9404-a0fe4a0cc288

Author: Sreeman, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1105, T1218

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/01/13 high

  • Administrative scripts (installers)

Suspicious Usage of the Manage-bde.wsf Script

Detects usage of the manage-bde.wsf script that may indicate an attempt of proxy execution from script

Rule ID

process_creation_commandline_186

Query

{'selection': {'CommandLine|contains|all': ['cscript', 'manage-bde.wsf']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c363385c-f75d-4753-a108-c1a8e28bdbda

Author: oscd.community, Natalia Shornikova, Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1216

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/13 medium

  • Unknown

Potential COM Objects Download Cradles Usage - Process Creation

Detects usage of COM objects that can be abused to download files in PowerShell by CLSID

Rule ID

process_creation_commandline_187

Query

{'selection_1': {'CommandLine|contains': '[Type]::GetTypeFromCLSID('}, 'selection_2': {'CommandLine|contains': ['0002DF01-0000-0000-C000-000000000046', 'F6D90F16-9C73-11D3-B32E-00C04F990BB4', 'F5078F35-C551-11D3-89B9-0000F81FE221', '88d96a0a-f192-11d4-a65f-0040963251e5', 'AFBA6B42-5692-48EA-8141-DC517DCF0EF1', 'AFB40FFD-B609-40A3-9828-F88BBE11E4E3', '88d96a0b-f192-11d4-a65f-0040963251e5', '2087c2f4-2cef-4953-a8ab-66779b670495', '000209FF-0000-0000-C000-000000000046', '00024500-0000-0000-C000-000000000046']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,02b64f1b-3f33-4e67-aede-ef3b0a5a8fcf

Author: frack113

Tactics, Techniques, and Procedures

T1059.003

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/12/25 medium

  • Legitimate use of the library

Base64 MZ Header In CommandLine

Detects encoded base64 MZ header in the commandline

Rule ID

process_creation_commandline_188

Query

{'selection': {'CommandLine|contains': ['TVqQAAMAAAAEAAAA', 'TVpQAAIAAAAEAA8A', 'TVqAAAEAAAAEABAA', 'TVoAAAAAAAAAAAAA', 'TVpTAQEAAAAEAAAA']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,22e58743-4ac8-4a9f-bf19-00a0428d8c5f

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/07/12 high

  • Unlikely

Capture a Network Trace with netsh.exe

Detects capture a network trace via netsh.exe trace functionality

Rule ID

process_creation_commandline_189

Query

{'selection': {'CommandLine|contains|all': ['netsh', 'trace', 'start']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,d3c3861d-c504-4c77-ba55-224ba82d0118

Author: Kutepov Anton, oscd.community

Tactics, Techniques, and Procedures

T1040, T1059.003

References

N/A

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/10/24 medium

  • Legitimate administrator or user uses netsh.exe trace functionality for legitimate reason

Baby Shark Activity

Detects activity that could be related to Baby Shark malware

Rule ID

process_creation_commandline_190

Query

{'selection': {'CommandLine|contains': ['reg query "HKEY_CURRENT_USER\\Software\\Microsoft\\Terminal Server Client\\Default"', 'powershell.exe mshta.exe http', 'cmd.exe /c taskkill /im cmd.exe']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,2b30fa36-3a18-402f-a22d-bf4ce2189f35

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1012, T1059.001, T1059.003, T1059.003, T1218.005

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/02/24 high

  • Unknown

Suspicious Ping/Del Command Combination

Detects a method often used by ransomware. Which combines the "ping" to wait a couple of seconds and then "del" to delete the file in question. Its used to hide the file responsible for the initial infection for example

Rule ID

process_creation_commandline_191

Query

{'selection_count': {'CommandLine|contains': [' -n ', ' /n ']}, 'selection_nul': {'CommandLine|contains': 'Nul'}, 'selection_del_param': {'CommandLine|contains': [' /f ', ' -f ', ' /q ', ' -q ']}, 'selection_all': {'CommandLine|contains|all': ['ping', 'del ']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,54786ddc-5b8a-11ed-9b6a-0242ac120002

Author: Ilya Krestinichev

Tactics, Techniques, and Procedures

T1059.003, T1070.004

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/11/03 high

  • False positive could occur in admin scripts that execute inline

Change Default File Association

When a file is opened, the default program used to open the file (also called the file association or handler) is checked. File association selections are stored in the Windows Registry and can be edited by users, administrators, or programs that have Registry access or by administrators using the built-in assoc utility. Applications can modify the file association for a given file extension to call an arbitrary program when a file with the given extension is opened.

Rule ID

process_creation_commandline_192

Query

{'selection': {'CommandLine|contains|all': ['cmd', 'assoc'], 'CommandLine|contains': [' /c ', ' /k ', ' /r ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,3d3aa6cd-6272-44d6-8afc-7e88dfef7061

Author: Timur Zinniatullin, oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1546.001

References

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/10/21 low

  • Admin activity

PowerShell Web Download and Execution

Detects suspicious ways to download files or content and execute them using PowerShell Invoke-Expression

Rule ID

process_creation_commandline_193

Query

{'selection_download': {'CommandLine|contains': ['.DownloadString(', '.DownloadFile(', 'Invoke-WebRequest ', 'iwr ']}, 'selection_iex': {'CommandLine|contains': ['IEX(', 'IEX (', 'I`EX', 'IE`X', 'I`E`X', '| IEX', '|IEX ', 'Invoke-Expression', ';iex $']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,85b0b087-eddf-4a2b-b033-d771fa2b9775

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/03/24 high

  • Scripts or tools that download files and execute them

Empire PowerShell Launch Parameters

Detects suspicious powershell command line parameters used in Empire

Rule ID

process_creation_commandline_194

Query

{'selection': {'CommandLine|contains': [' -NoP -sta -NonI -W Hidden -Enc ', ' -noP -sta -w 1 -enc ', ' -NoP -NonI -W Hidden -enc ', ' -noP -sta -w 1 -enc', ' -enc  SQB', ' -nop -exec bypass -EncodedCommand ']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,79f4ede3-402e-41c8-bc3e-ebbf5f162581

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2019/04/20 high

  • Other tools that incidentally use the same command line parameters

Invoke-Obfuscation STDIN+ Launcher

Detects Obfuscated use of stdin to execute PowerShell

Rule ID

process_creation_commandline_195

Query

{'selection_main': {'CommandLine|contains|all': ['cmd', 'powershell'], 'CommandLine|contains': ['/c', '/r']}, 'selection_other': [{'CommandLine|contains': 'noexit'}, {'CommandLine|contains|all': ['input', '$']}], 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,6c96fc76-0eb1-11eb-adc1-0242ac120002

Author: Jonathan Cheong, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/15 high

  • Unknown

Conti NTDS Exfiltration Command

Detects a command used by conti to exfiltrate NTDS

Rule ID

process_creation_commandline_196

Query

{'selection': {'CommandLine|contains|all': ['7za.exe', '\\C$\\temp\\log.zip']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,aa92fd02-09f2-48b0-8a93-864813fb8f41

Author: Max Altgelt (Nextron Systems), Tobias Michalski (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1560

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/08/09 high

  • Unknown

Covenant Launcher Indicators

Detects suspicious command lines used in Covenant luanchers

Rule ID

process_creation_commandline_198

Query

{'selection': {'CommandLine|contains|all': ['-Sta', '-Nop', '-Window', 'Hidden'], 'CommandLine|contains': ['-Command', '-EncodedCommand']}, 'selection2': {'CommandLine|contains': ['sv o (New-Object IO.MemorySteam);sv d ', 'mshta file.hta', 'GruntHTTP', '-EncodedCommand cwB2ACAAbwAgA']}, 'condition': 'selection or selection2'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,c260b6db-48ba-4b4a-a76f-2f67644e99d2

Author: Florian Roth (Nextron Systems), Jonhnathan Ribeiro, oscd.community

Tactics, Techniques, and Procedures

T1059.001, T1059.003, T1564.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/06/04 high N/A

UNC2452 PowerShell Pattern

Detects a specific PowerShell command line pattern used by the UNC2452 actors as mentioned in Microsoft and Symantec reports

Rule ID

process_creation_commandline_199

Query

{'selection1': {'CommandLine|contains|all': ['Invoke-WMIMethod win32_process -name create -argumentlist', 'rundll32 c:\\windows']}, 'selection2': {'CommandLine|contains|all': ['wmic /node:', 'process call create "rundll32 c:\\windows']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b7155193-8a81-4d8f-805d-88de864ca50c

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1047, T1059.001, T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/01/20 critical

  • Unlikely

Launch-VsDevShell.PS1 Proxy Execution

Detects the use of the 'Launch-VsDevShell.ps1' Microsoft signed script to execute commands.

Rule ID

process_creation_commandline_200

Query

{'selection_script': {'CommandLine|contains': 'Launch-VsDevShell.ps1'}, 'selection_flags': {'CommandLine|contains': ['VsWherePath ', 'VsInstallationPath ']}, 'condition': 'all of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,45d3a03d-f441-458c-8883-df101a3bb146

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1216.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/08/19 medium

  • Legitimate usage of the script by a developer

Detect Virtualbox Driver Installation OR Starting Of VMs

Adversaries can carry out malicious operations using a virtual instance to avoid detection. This rule is built to detect the registration of the Virtualbox driver or start of a Virtualbox VM.

Rule ID

process_creation_commandline_201

Query

{'selection_1': {'CommandLine|contains': ['VBoxRT.dll,RTR3Init', 'VBoxC.dll', 'VBoxDrv.sys']}, 'selection_2': {'CommandLine|contains': ['startvm', 'controlvm']}, 'condition': '1 of selection_*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,bab049ca-7471-4828-9024-38279a4c04da

Author: Janantha Marasinghe

Tactics, Techniques, and Procedures

T1059.003, T1564, T1564.006

References

Severity

24

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2020/09/26 low

  • This may have false positives on hosts where Virtualbox is legitimately being used for operations

Suspicious RDP Redirect Using TSCON

Detects a suspicious RDP session redirect using tscon.exe

Rule ID

process_creation_commandline_202

Query

{'selection': {'CommandLine|contains': ' /dest:rdp-tcp:'}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,f72aa3e8-49f9-4c7d-bd74-f8ab84ff9bbb

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1021.001, T1059.003, T1563.002

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/03/17 high

  • Unknown

Rar Usage with Password and Compression Level

Detects the use of rar.exe, on the command line, to create an archive with password protection or with a specific compression level. This is pretty indicative of malicious actions.

Rule ID

process_creation_commandline_203

Query

{'selection_password': {'CommandLine|contains': ' -hp'}, 'selection_other': {'CommandLine|contains': [' -m', ' a ']}, 'condition': 'selection_password and selection_other'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,faa48cae-6b25-4f00-a094-08947fef582f

Author: @ROxPinTeddy

Tactics, Techniques, and Procedures

T1059.003, T1560.001

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/05/12 high

  • Legitimate use of Winrar command line version

  • Other command line tools, that use these flags

Invoke-Obfuscation VAR+ Launcher

Detects Obfuscated use of Environment Variables to execute PowerShell

Rule ID

process_creation_commandline_204

Query

{'selection': {'CommandLine|contains|all': ['cmd', '"set', '-f'], 'CommandLine|contains': ['/c', '/r']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,27aec9c9-dbb0-4939-8422-1742242471d0

Author: Jonathan Cheong, oscd.community

Tactics, Techniques, and Procedures

T1027, T1059.001, T1059.003

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2020/10/15 high

  • Unknown

Suspicious SYSVOL Domain Group Policy Access

Detects Access to Domain Group Policies stored in SYSVOL

Rule ID

process_creation_commandline_205

Query

{'selection': {'CommandLine|contains|all': ['\\SYSVOL\\', '\\policies\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,05f3c945-dcc8-4393-9f3d-af65077a8f86

Author: Markus Neis, Jonhnathan Ribeiro, oscd.community

Tactics, Techniques, and Procedures

T1059.003, T1552.006

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2018/04/09 medium

  • Administrative activity

AnyDesk Piped Password Via CLI

Detects piping the password to an anydesk instance via CMD and the '--set-password' flag.

Rule ID

process_creation_commandline_206

Query

{'selection': {'CommandLine|contains|all': ['/c ', 'echo ', '.exe --set-password']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,b1377339-fda6-477a-b455-ac0923f9ec2c

Author: Nasreddine Bencherchali (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1219

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2022/09/28 medium

  • Legitimate piping of the password to anydesk

  • Some FP could occure with similar tools that uses the same command line '--set-password'

Suspicious PowerShell Mailbox Export to Share

Detects usage of the powerShell New-MailboxExportRequest Cmdlet to exports a mailbox to a remote or local share, as used in ProxyShell exploitations

Rule ID

process_creation_commandline_207

Query

{'selection': {'CommandLine|contains|all': ['New-MailboxExportRequest', ' -Mailbox ', ' -FilePath \\\\']}, 'condition': 'selection'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,889719ef-dd62-43df-86c3-768fb08dc7c0

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003

References

Severity

95

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2021/08/07 critical

  • Unknown

Compress Data and Lock With Password for Exfiltration With WINZIP

An adversary may compress or encrypt data that is collected prior to exfiltration using 3rd party utilities

Rule ID

process_creation_commandline_208

Query

{'selection_winzip': {'CommandLine|contains': ['winzip.exe', 'winzip64.exe']}, 'selection_password': {'CommandLine|contains': '-s"'}, 'selection_other': {'CommandLine|contains': [' -min ', ' -a ']}, 'condition': 'all of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e2e80da2-8c66-4e00-ae3c-2eebd29f6b6d

Author: frack113

Tactics, Techniques, and Procedures

T1059.003, T1560.001

References

Severity

49

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2021/07/27 medium

  • Unknown

Network Reconnaissance Activity

Detects a set of suspicious network related commands often used in recon stages

Rule ID

process_creation_commandline_209

Query

{'selection_nslookup': {'CommandLine|contains|all': ['nslookup', '_ldap._tcp.dc._msdcs.']}, 'condition': '1 of selection*'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

SigmaHQ,e6313acd-208c-44fc-a0ff-db85d572e90e

Author: Florian Roth (Nextron Systems)

Tactics, Techniques, and Procedures

T1059.003, T1082, T1087

References

Severity

74

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/02/07 high

  • False positives depend on scripts and administrative tools used in the monitored environment

File overwritten by cipher tool

The Windows tool cipher can be used to remove data from available unused disk space on the entire volume. Ransomware could use this technique to prevent the victim from using file recovery tools to recover their files.

Rule ID

process_creation_commandline_301

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\cipher.exe'}, 'selection5': {'CommandLine|re': '\\/w\\:[A-Z]{1}'}, 'condition': 'selection2 and selection3 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1070.004

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

PowerShell reverse shell one-liner

A PowerShell process with arguments that may indicate a reverse shell execution has been detected.

Rule ID

process_creation_commandline_302

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': 'powershell.exe'}, 'selection5': {'CommandLine|contains': 'Sockets.TCPClient'}, 'selection6': {'CommandLine|contains': 'GetStream()'}, 'selection7': {'CommandLine|contains': 'IEX'}, 'selection8': {'CommandLine|contains': 'DownloadString'}, 'selection9': {'CommandLine|contains': 'mini-reverse.ps1'}, 'condition': 'selection2 and selection3 and ((selection5 and selection6) or (selection7 and selection8 and selection9))'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1059.001

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Shellcode execution via InstallUtil.exe

Suspicious file/code has been executed via InstallUtil.exe. This is a common technique used by malware to install additional malicious components and/or execute Shellcode.

Rule ID

process_creation_commandline_303

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': 'InstallUtil.exe'}, 'selection4': {'CommandLine|contains': '/LogToConsole=false'}, 'selection5': {'CommandLine|contains': '/logfile= '}, 'condition': 'selection2 and selection3 and selection4 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218.004

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

ALPC Task Scheduler Exploit LPE

Microsoft Windows task scheduler contains a local privilege escalation vulnerability in the Advanced Local Procedure Call (ALPC) interface, which can allow an attacker to perform a local privilege escalation.

Rule ID

process_creation_commandline_304

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\schtasks.exe'}, 'selection5': {'CommandLine|contains': '/change /TN'}, 'selection6': {'CommandLine|contains': '/RU'}, 'selection7': {'CommandLine|contains': '/RP'}, 'condition': 'selection2 and selection3  and selection5 and selection6 and selection7'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1053.005

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Behavior DNS cache cleared

The DNS cache has been cleared in the system.

Rule ID

process_creation_commandline_305

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\ipconfig.exe'}, 'selection4': {'CommandLine|contains': '/flushdns'}, 'condition': 'selection2 and selection3 and selection4'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1070

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

WMIC sending output to clipboard

WMIC command is using /output:clipboard as a way to hide the normal output of process creation that is printed when creating a process with WMIC.

Rule ID

process_creation_commandline_307

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\wmic.exe'}, 'selection5': {'CommandLine|contains': '/output:clipboard'}, 'selection6': {'CommandLine|contains': 'process call create'}, 'condition': 'selection2 and selection3 and selection5 and selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1036

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

CnC Channel through Nslookup

A Windows process was detected using Nslookup with abnormal flag(s) usually used by malware to communicate with the Command and Control.

Rule ID

process_creation_commandline_308

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\slookup.exe'}, 'selection4': {'CommandLine|contains': ' aaaa'}, 'selection5': {'CommandLine|contains': '=aaaa'}, 'selection6': {'CommandLine|re': '[a-z0-9]{15,45}\\. [a-z0-9]{1,15}\\.[a-z0-9]{1,4}'}, 'condition': 'selection2 and selection3 and (selection4 or selection5) and selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

WMIC Retrieving Security Configuration

The wmic.exe command was executed to get information from the security configurations. This could be an indication of malicious activity.

Rule ID

process_creation_commandline_309

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\wmic.exe'}, 'selection4': {'CommandLine|contains': 'SecurityCenter2'}, 'selection5': {'CommandLine|contains': ['AntiVirusProduct', 'FirewallProduct']}, 'selection6': {'SourceUserName': ''}, 'condition': 'selection2 and selection3 and selection4 and selection5 and not selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1005

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Taskkill killing Antivirus process

An attempt to kill an Antivirus process has been detected. This can be the result of a manual command used by an attacker or an automated process as part of malware being deployed in the system.

Rule ID

process_creation_commandline_310

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': 'Taskkill'}, 'selection4': {'CommandLine|re': '(?:fsav32|MsMpEng|FPAVServer|TMBMSRV|Mcshield|avgnsx|AvastSvc|dwengine|secenter|avguard|ccSvcHst|avp|360sd|360tray|AvastUi)\\.exe'}, 'condition': 'selection2 and selection3 and selection4'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1562

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

WSH Injection via PubPrn

An attempt to inject malicious code into a Microsoft signed WSH script has been detected. This can be an attempt to bypass whitelisting restrictions.

Rule ID

process_creation_commandline_312

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': 'wscript.exe'}, 'selection4': {'CommandLine|contains': 'pubprn.vbs'}, 'selection5': {'CommandLine|contains': 'script:'}, 'condition': 'selection2 and selection3 and selection4 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1055

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

AppLocker Bypass

A successful attempt to bypass AppLocker has been detected. This can indicate an attacker is trying to bypass whitelisting technologhies and escalate privileges or/and move laterally in your network.

Rule ID

process_creation_commandline_314

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\regsvr32.exe'}, 'selection4': {'CommandLine|contains': '/s'}, 'selection5': {'CommandLine|contains': '/i:http'}, 'selection6': {'CommandLine|contains': 'scrobj.dll'}, 'condition': 'selection2 and selection3 and selection4 and selection5 and selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218.010

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

File Deletion Backup files deleted recursively

An attempt to delete files and folders that migth contain backup data has been detected. This could be an indication of a ransomware infection or an attacker trying to cause damage.

Rule ID

process_creation_commandline_315

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\cmd.exe'}, 'selection4': {'CommandLine|contains': ' del '}, 'selection5': {'CommandLine|re': '(?:backup|bkup|\\.bak|\\.bac|\\.dsk|\\.win|\\.bkf|\\.wbcat)'}, 'condition': 'selection2 and selection3 and selection4 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1070.004

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Attempt to stop or delete Windows Defender service

Windows Defender Real-time Protection scanning for malware and other potentially unwanted software has been stopped.

Rule ID

process_creation_commandline_316

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\et.exe'}, 'selection5': {'Image|contains': '\\sc.exe'}, 'selection7': {'CommandLine|contains': 'stop'}, 'selection8': {'CommandLine|contains': 'delete'}, 'selection9': {'CommandLine|contains': 'WinDefend'}, 'condition': 'selection2 and (selection3 or selection5) and (selection7 or selection8) and selection9'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1562.001

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows Process Argument contains Base64 Encoded PE Header

A process has been launched with a Base64 encoded argument. Once decoded, the argument corresponds to the PE Header. This can indicate an attacker is trying to bypass any present execution policy.

Rule ID

process_creation_commandline_317

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'CommandLine|contains': 'TVqQAAMAAAAEAAA'}, 'condition': 'selection2 and selection3'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1140

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Cobalt Gang Windows script execution

A known Cobalt Gang script has been executed in the system. This could mean that your computer has been compromised and malicious code is running in your endpoint.

Rule ID

process_creation_commandline_319

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\wscript.exe'}, 'selection5': {'CommandLine|contains': 'error_log.vbe'}, 'condition': 'selection2 and (selection3) and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows execution using odbcconf tool

The odbcconf tool allows users to configure Open Database Connectivity (ODBC) drivers. The utility can be misused to execute malicious code and evade detection techniques.

Rule ID

process_creation_commandline_320

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\odbcconf.exe'}, 'selection5': {'CommandLine|contains': 'REGSVR'}, 'condition': 'selection2 and selection3 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows INF file launch

The Advanced INF Package Installer (advpack.dll) can use the LaunchINFSection function to invoke a section from .inf files. This could be used by attackers to remotely launch staged SCT files with malicious code.

Rule ID

process_creation_commandline_321

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\rundll32.exe'}, 'selection5': {'CommandLine|re': 'advpack\\.dll, (?:LaunchINFSection|#46)\\s+'}, 'condition': 'selection2 and selection3 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows MavInject DLL Injection

MavInject is a Windows utility that can be used to execute code. Mavinject can be used to inject a DLL into a running process.

Rule ID

process_creation_commandline_322

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|re': '\\\\Mavinject(?:32|64)?.exe'}, 'selection5': {'CommandLine|contains': '/INJECTRUNNING'}, 'condition': 'selection2 and selection3 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1218

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Suspicious ACL Change

A suspicious change was detected to an access control list (ACL). In this case, 'Full Access' was granted to 'Everyone' on a file or folder.

Rule ID

process_creation_commandline_324

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\icacls.exe'}, 'selection4': {'CommandLine|re': '\\/grant(?::r)?\\s+Everyone:F'}, 'condition': 'selection2 and selection3 and selection4'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1098

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Credential Access Tool Detected - LaZagne

LaZagne is a multiplatform tool capable to retrieve user credentials from several system services and applications, such as web browsers.

Rule ID

process_creation_commandline_325

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\lazagne'}, 'selection4': {'CommandLine|contains': '-quiet'}, 'condition': 'selection2 and selection3 and selection4'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1003.002

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Indirect command execution using pcalua.exe

An user tried to use a Windows pcalua.exe utility to execute commands in an alternative way (without using cmd.exe or powershell.exe). Attackers may use this technique to avoid invoking the cmd but still execute commands.

Rule ID

process_creation_commandline_327

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\pcalua.exe'}, 'selection5': {'CommandLine|contains': ' - a '}, 'selection6': {'CommandLine|re': '\\.(?:hta|vbs|vbe|js|jse|wsf|wsh)'}, 'condition': 'selection2 and selection3 and selection5 and selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1202

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows UAC Bypass

A User Account Control Bypass activity was detected. This can be due to either regular operation or because an attacker is trying to escalate privileges.

Rule ID

process_creation_commandline_328

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'CommandLine|contains': 'TpmInitUACBypass.exe'}, 'condition': 'selection2 and selection3'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1548.002

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

SAM, SECURITY or SYSTEM Registry Hive Export

These hives can be used with a password cracker or creddump to dump the LANMAN/NTLM hashes, view cached credentials, and decrypt LSA secrets. This could be an indication of a ransomware infection or an attacker trying to cause damage.

Rule ID

process_creation_commandline_329

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\reg.exe'}, 'selection4': {'CommandLine|re': 'save.+ (?:hklm|hkey_local_machine)\\\\(?:system|security|sam)'}, 'selection5': {'SourceUserName': ''}, 'condition': 'selection2 and selection3 and selection4 and not selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1003.002

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Suspicious PowerShell Argument

PowerShell was executed with suspicious command line argument. The script is likely attempting to download files from a remote server. This could be an indication of malicious activity.

Rule ID

process_creation_commandline_330

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\powershell.exe'}, 'selection4': {'CommandLine|contains': 'Net.WebClient'}, 'selection5': {'CommandLine|contains': 'Download'}, 'selection6': {'SourceUserName': ''}, 'condition': 'selection2 and selection3 and selection4 and selection5 and not selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1059.001

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows UAC bypass - UACME tool

User Account Control Bypass activity was detected. This can be due to either a regular operation or because an attacker is trying to escalate privileges.

Rule ID

process_creation_commandline_331

Query

{'selection2': {'EventID': [1, 4688]}, 'selection9': {'CommandLine|re': '\\.exe\\".*cleanmgr\\.exe \\/autoclean'}, 'condition': 'selection2 and selection9'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1548.002

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Ransomware Decryption Instructions File Detected

After a ransomware malware infects a host machine, a file with instructions to recover the encrypted files is created. A file with these characteristics was opened in the system, what is an indicator of ransomware infection.

Rule ID

process_creation_commandline_332

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'CommandLine|re': '_Locky_recover_instructions.txt|Coin.Locker.txt DECRYPT_ReadMe.TXT|Contact_Here_To_Recover_Your_Files.txt|DECRYPT_INSTRUCTION.TXT|DECRYPT_INSTRUCTIONS.TXT|DecryptAllFiles.txt|encryptor_raas_readme_liesmich.txt|FILESAREGONE.TXT|help_decrypt_your_files.html|HELP_RECOVER_FILES.txt|HELP_TO_DECRYPT_YOUR_FILES.txt|HELPDECRYPT.TXT|HELPDECYPRT_YOUR_FILES.HTML|How_To_Recover_Files.txt|Howto_Restore_FILES.TXT|HOW TO DECRYPT YOUR DATA.txt|IHAVEYOURSECRET.KEY|INSTRUCCIONES_DESCIFRADO.TXT|ReadDecryptFilesHere.txt|Readme to restore your files.txt|!SBLOCK_INFO!.rtf|КАК ВОССТАНОВИТЬ ЗАШИФРОВАННЫЕ ФАЙЛЫ.TXT|README_LOCKED.txt'}, 'condition': 'selection2 and selection3'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1486

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Windows Autorun Registry Entry Added via reg.exe

An executable was added to the Windows Autorun registry. While this may have occurred due to normal software installation, this is a common technique used by malware to ensure it is started after reboots.

Rule ID

process_creation_commandline_333

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': 'reg.exe'}, 'selection4': {'CommandLine|contains': 'SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run'}, 'selection5': {'CommandLine|contains': ' add '}, 'condition': 'selection2 and selection3 and selection4 and selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1547.001

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

File Deletion Backup Catalog Deletion

If the backup catalog is deleted for a computer, you will not be able to access the backups created of that computer using the Windows Server Backup snap-in. This could be an indication of a ransomware infection or an attacker trying to cause damage.

Rule ID

process_creation_commandline_334

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'Image|contains': '\\wbadmin.exe'}, 'selection4': {'CommandLine|contains': 'delete catalog'}, 'selection5': {'SourceUserName': ''}, 'condition': 'selection2 and selection3 and selection4 and not selection5'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1070.004

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Wireless Network Password Retrieval

The password of a wireless network was accessed. This could be an indication of malicious activity.

Rule ID

process_creation_commandline_335

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'ParentImage|contains': '\\etsh.exe'}, 'selection5': {'CommandLine|contains': 'wlan'}, 'selection6': {'CommandLine|contains': 'key=clear'}, 'condition': 'selection2 and selection3 and selection5 and selection6'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1555

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Metasploit MSSQL Command Execution

An attacked gained access to the MSSQL Server database and is executing the Metasploit module mssql_exec.

Rule ID

process_creation_commandline_337

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'ParentImage|contains': 'sqlservr.exe'}, 'selection4': {'CommandLine|contains': 'echo OWNED'}, 'condition': 'selection2 and selection3 and selection4'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1190

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

Internet Explorer executing suspicious wmic command

An attacker can execute code after a successful exploit attack. Internet Explorer is a commonly targeted software in Exploit Kit campaigns.

Rule ID

process_creation_commandline_338

Query

{'selection2': {'EventID': [1, 4688]}, 'selection3': {'ParentImage|contains': '\\iexplore.exe'}, 'selection4': {'Image|contains': '\\WMIC.exe'}, 'selection6': {'CommandLine|contains': 'process call create'}, 'selection7': {'CommandLine|contains': '\\Temp\\'}, 'condition': 'selection2 and selection3 and (selection4 and selection6 and selection7)'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1203

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A

File Deletion Windows Shadow Copies Deletion via Powershell

An attempt to delete all shadow copies using the Windows Volume Shadow Copy Service (VSS) via Powershell has been detected. This could be an indication of a ransomware infection or an attacker trying to cause damage.

Rule ID

process_creation_commandline_339

Query

{'selection2': {'EventID': [1, 4688]}, 'selection7': {'Image|contains': '\\powershell.exe'}, 'selection8': {'CommandLine|contains': 'RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA=='}, 'condition': 'selection2 and (selection7 and selection8)'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring process creation

Rule Source

Developed internally by Stellar Cyber

Tactics, Techniques, and Procedures

T1070.004

References

N/A

Severity

50

Suppression Logic Based On

  • computer_name
  • event_data.CommandLine
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
test 2022/05/01 medium N/A