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Elastic Docs ›Elastic Security Solution [8.11] ›Downloadable rule update v8.11.5

Program Files Directory Masquerading

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Program Files Directory Masquerading

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Identifies execution from a directory masquerading as the Windows Program Files directories. These paths are trusted and usually host trusted third party programs. An adversary may leverage masquerading, along with low privileges to bypass detections allowlisting those folders.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-endpoint.events.*
  • logs-windows.*
  • endgame-*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Defense Evasion
  • Data Source: Elastic Endgame
  • Data Source: Elastic Defend

Version: 107

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where host.os.type == "windows" and event.type == "start" and
  process.executable : "C:\\*Program*Files*\\*.exe" and
  not process.executable : (
        "?:\\Program Files\\*.exe",
        "?:\\Program Files (x86)\\*.exe",
        "?:\\Users\\*.exe",
        "?:\\ProgramData\\*.exe",
        "?:\\Windows\\Downloaded Program Files\\*.exe",
        "?:\\Windows\\Temp\\.opera\\????????????\\CProgram?FilesOpera*\\*.exe",
        "?:\\Windows\\Temp\\.opera\\????????????\\CProgram?Files?(x86)Opera*\\*.exe"
  )

Framework: MITRE ATT&CKTM

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