Elastic Security Detection Rules

Disabling User Account Control via Registry Modification

Last updated 4 months ago on 2025-08-26
Created 5 years ago on 2021-01-20

About

User Account Control (UAC) can help mitigate the impact of malware on Windows hosts. With UAC, apps and tasks always run in the security context of a non-administrator account, unless an administrator specifically authorizes administrator-level access to the system. This rule identifies registry value changes to bypass User Access Control (UAC) protection.
Tags
Domain: EndpointOS: WindowsUse Case: Threat DetectionTactic: Privilege EscalationData Source: Elastic EndgameData Source: Elastic DefendData Source: SysmonData Source: Microsoft Defender for EndpointData Source: SentinelOneData Source: CrowdstrikeLanguage: eql
Severity
medium
Risk Score
47
MITRE ATT&CK™

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

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

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

↳ Modify Registry (T1112)(external, opens in a new tab or window)

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

↳ Impair Defenses (T1562)(external, opens in a new tab or window)

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

Definition

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

endpoint(external, opens in a new tab or window)

windows(external, opens in a new tab or window)

m365_defender(external, opens in a new tab or window)

sentinel_one_cloud_funnel(external, opens in a new tab or window)

crowdstrike(external, opens in a new tab or window)

Query
text code block:
registry where host.os.type == "windows" and event.type == "change" and
  registry.value : ("EnableLUA", "ConsentPromptBehaviorAdmin", "PromptOnSecureDesktop") and
  registry.data.strings : ("0", "0x00000000")

  /*
    Full registry key path omitted due to data source variations:
    HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\EnableLUA
    HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\ConsentPromptBehaviorAdmin
    HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Policies\\System\\PromptOnSecureDesktop
  */

Install detection rules in Elastic Security

Detect Disabling User Account Control via Registry Modification 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(external, opens in a new tab or window).