Hayabusa high test sigma

PDF File Created By RegEdit.EXE

Detects the creation of a file with the ".pdf" extension by the "RegEdit.exe" process. This indicates that a user is trying to print/save a registry key as a PDF in order to potentially extract sensitive information and bypass defenses.

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Detection Logic

{
  "file_event": {
    "EventID": 11,
    "Channel": "Microsoft-Windows-Sysmon/Operational"
  },
  "selection": {
    "Image
| endswith": "\\regedit.exe",
    "TargetFilename
| endswith": ".pdf"
  },
  "condition": "file_event and selection"
}

False Positives

  • ⚠ Unlikely

Field Validations

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