Hayabusa high test sigma

WhoAmI as Parameter

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

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Detection Logic

{
  "process_creation": {
    "EventID": 1,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "CommandLine
| contains": ".exe whoami"
  },
  "condition": "process_creation and selection"
}

False Positives

  • ⚠ Unknown

Field Validations

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