Sigma Rule Library

UAC Notification Disabled

Detects when an attacker tries to disable User Account Control (UAC) notification by tampering with the "UACDisableNotify" value. UAC is a critical security feature in Windows that prevents unauthorized changes to the operating system. It prompts the user for permission or an administrator password before allowing actions that could affect the system's operation or change settings that affect other users. When "UACDisableNotify" is set to 1, UAC prompts are suppressed.

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Detection logic

selection

TargetObject|contains: \Microsoft\Security Center\UACDisableNotify
Details: DWORD (0x00000001)

Condition

selection

Raw YAML

title: UAC Notification Disabled
id: c5f6a85d-b647-40f7-bbad-c10b66bab038
related:
    - id: 0d7ceeef-3539-4392-8953-3dc664912714
      type: similar
    - id: 48437c39-9e5f-47fb-af95-3d663c3f2919
      type: similar
status: test
description: |
    Detects when an attacker tries to disable User Account Control (UAC) notification by tampering with the "UACDisableNotify" value.
    UAC is a critical security feature in Windows that prevents unauthorized changes to the operating system. It prompts the user for permission or an administrator password before allowing actions that could affect the system's operation or change settings that affect other users.
    When "UACDisableNotify" is set to 1, UAC prompts are suppressed.
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/7e11e9b79583545f208a6dc3fa062f2ed443d999/atomics/T1548.002/T1548.002.md
    - https://securityintelligence.com/x-force/x-force-hive0129-targeting-financial-institutions-latam-banking-trojan/
author: frack113, Nasreddine Bencherchali (Nextron Systems)
date: 2024-05-10
tags:
    - attack.privilege-escalation
    - attack.t1548.002
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\Microsoft\Security Center\UACDisableNotify'
        Details: 'DWORD (0x00000001)'
    condition: selection
falsepositives:
    - Unknown
level: medium

False positives

  • Unknown

References

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