Hayabusa critical test sigma

Renamed Whoami Execution

Detects the execution of whoami that has been renamed to a different name to avoid detection

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Detection Logic

{
  "process_creation": {
    "EventID": 1,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "OriginalFileName": "whoami.exe"
  },
  "filter": {
    "Image
| endswith": "\\whoami.exe"
  },
  "condition": "process_creation and (selection and not filter)"
}

False Positives

  • ⚠ Unknown

Field Validations

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