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Bypass UAC via Event Viewer

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Identifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.

Rule type: eql

Rule indices:

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

Severity: high

Risk score: 73

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:

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

Version: 9

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 : "eventvwr.exe" and
  not process.executable :
            ("?:\\Windows\\SysWOW64\\mmc.exe",
             "?:\\Windows\\System32\\mmc.exe",
             "?:\\Windows\\SysWOW64\\WerFault.exe",
             "?:\\Windows\\System32\\WerFault.exe")

Framework: MITRE ATT&CKTM

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