Hayabusa high stable sigma

CMSTP Execution Process Creation

Detects various indicators of Microsoft Connection Manager Profile Installer execution

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Detection Logic

{
  "process_creation": {
    "EventID": 1,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "ParentImage
| endswith": "\\cmstp.exe"
  },
  "condition": "process_creation and selection"
}

False Positives

  • ⚠ Legitimate CMSTP use (unlikely in modern enterprise environments)

Field Validations

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