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Potential Exploitation of an Unquoted Service Path Vulnerability

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Potential Exploitation of an Unquoted Service Path Vulnerability

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Adversaries may leverage unquoted service path vulnerabilities to escalate privileges. By placing an executable in a higher-level directory within the path of an unquoted service executable, Windows will natively launch this executable from its defined path variable instead of the benign one in a deeper directory, thus leading to code execution.

Rule type: eql

Rule indices:

  • logs-endpoint.events.*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (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: Privilege Escalation
  • Rule Type: BBR
  • Data Source: Elastic Defend

Version: 2

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where event.type == "start" and
  (
    process.executable : "?:\\Program.exe" or
    process.executable regex """(C:\\Program Files \(x86\)\\|C:\\Program Files\\)\w+.exe"""
  )

Framework: MITRE ATT&CKTM

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