Sigma medium test sigma

Potentially Suspicious Compression Tool Parameters

Detects potentially suspicious command line arguments of common data compression tools

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Detection Logic

{
  "selection": {
    "OriginalFileName": [
      "7z*.exe",
      "*rar.exe",
      "*Command*Line*RAR*"
    ],
    "CommandLine
| contains": [
      " -p",
      " -ta",
      " -tb",
      " -sdel",
      " -dw",
      " -hp"
    ]
  },
  "filter_main_generic": {
    "ParentImage
| contains": [
      ":\\Program Files\\",
      ":\\Program Files (x86)\\"
    ]
  },
  "condition": "selection and not 1 of filter_main_*"
}

False Positives

  • ⚠ Unknown

Field Validations

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