Rules Contributing to Suspicious Windows Registry Event: Persistence Alert

The following rules are used to identify suspicious Windows registry events usually in the persistence stage. Any one or more of these will trigger the Suspicious Windows Registry Event: Persistence Alert. Details for each rule can be viewed by clicking the More Details link in the description.

Title

Description

Potential Persistence Via Microsoft office Add-in

Detect potential persistence via the creation of a Microsoft office add-in file to make it run automatically.

Rule ID

windows_registry_set_2

Query

{'selection1': {'TargetObject|contains': ['\\Software\\Microsoft\\Office\\']}, 'selection2': {'TargetObject|contains': ['\\Excel\\Options\\OPEN'], 'Details|startswith': '/R ', 'Details|endswith': '.xll'}, 'selection3': {'TargetObject|contains|all': ['\\PowerPoint\\AddIns', '\\Path'], 'Details|endswith': '.ppam'}, 'condition': 'selection1 and (selection2 or selection3)'}

Log Source

Stellar Cyber Windows Server Sensor configured for:

  • Monitoring registry events

Rule Source

SigmaHQ,961e33d1-4f86-4fcf-80ab-930a708b2f82

Author: frack113

Tactics, Techniques, and Procedures

TA0003, T1137.006

References

Severity

75

Suppression Logic Based On

  • computer_name
  • event_data.TargetObject
  • stellar.rule_id

Additional Information

Maturity Creation Date Risk Level False Positives
experimental 2023/01/15 high

  • Unknown