Hayabusa critical stable sigma

HackTool - Empire PowerShell UAC Bypass

Detects some Empire PowerShell UAC bypass methods

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Detection Logic

{
  "process_creation": {
    "EventID": 4688,
    "Channel": "Security"
  },
  "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": "process_creation and selection"
}

False Positives

  • ⚠ Unknown

Field Validations

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