Elastic Security Detection Rules

Bypass UAC via Event Viewer

Last updated 5 months ago on 2025-03-20
Created 5 years ago on 2020-03-17

About

Identifies User Account Control (UAC) bypass via eventvwr.exe. Attackers bypass UAC to stealthily execute code with elevated permissions.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Privilege EscalationTactic: Defense EvasionData Source: Elastic EndgameData Source: Elastic DefendData Source: Microsoft Defender for EndpointData Source: Windows Security Event LogsData Source: SysmonData Source: SentinelOneData Source: CrowdstrikeLanguage: eql
Severity
high
Risk Score
73
MITRE ATT&CK™

Privilege Escalation (TA0004)(opens in a new tab or window)

↳ Abuse Elevation Control Mechanism (T1548)(opens in a new tab or window)

Defense Evasion (TA0005)(opens in a new tab or window)

↳ Abuse Elevation Control Mechanism (T1548)(opens in a new tab or window)

License
Elastic License v2(opens in a new tab or window)

Definition

Rule Type
Event Correlation Rule
Integration Pack
Prebuilt Security Detection Rules
Index Patterns
endgame-*logs-crowdstrike.fdr*logs-endpoint.events.process-*logs-m365_defender.event-*logs-sentinel_one_cloud_funnel.*logs-system.security*logs-windows.forwarded*logs-windows.sysmon_operational-*winlogbeat-*
Related Integrations

endpoint(opens in a new tab or window)

windows(opens in a new tab or window)

system(opens in a new tab or window)

m365_defender(opens in a new tab or window)

sentinel_one_cloud_funnel(opens in a new tab or window)

crowdstrike(opens in a new tab or window)

Query
process where host.os.type == "windows" and event.type == "start" 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",
        "?\\Device\\HarddiskVolume?\\Windows\\Sys?????\\mmc.exe",
        "?\\Device\\HarddiskVolume?\\Windows\\Sys?????\\WerFault.exe"
  )

Install detection rules in Elastic Security

Detect Bypass UAC via Event Viewer in the Elastic Security detection engine by installing this rule into your Elastic Stack.

To setup this rule, check out the installation guide for Prebuilt Security Detection Rules(opens in a new tab or window).