Execution of an Unsigned Service

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This rule identifies the execution of unsigned executables via service control manager (SCM). Adversaries may abuse SCM to execute malware or escalate privileges.

Rule type: new_terms

Rule indices:

  • logs-endpoint.events.*

Severity: low

Risk score: 21

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: Execution
  • Tactic: Defense Evasion
  • Rule Type: BBR
  • Data Source: Elastic Defend

Version: 103

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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host.os.type:windows and event.category:process and event.type:start and
process.parent.executable:"C:\\Windows\\System32\\services.exe" and
(process.code_signature.exists:false or process.code_signature.trusted:false)

Framework: MITRE ATT&CKTM