UAC Bypass via Windows Firewall Snap-In Hijack

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UAC Bypass via Windows Firewall Snap-In Hijack

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Identifies attempts to bypass User Account Control (UAC) by hijacking the Microsoft Management Console (MMC) Windows Firewall snap-in. Attackers bypass UAC to stealthily execute code with elevated permissions.

Rule type: eql

Rule indices:

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

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:

Tags:

  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 4

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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process where event.type in ("start", "process_started") and
 process.parent.name == "mmc.exe" and
 /* process.Ext.token.integrity_level_name == "high" can be added in future for tuning */
 /* args of the Windows Firewall SnapIn */
  process.parent.args == "WF.msc" and process.name != "WerFault.exe"

Framework: MITRE ATT&CKTM