sigmamediumHunting

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.

MITRE ATT&CK

T1548.002

privilege-escalationdefense-evasion

Detection Query

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

Author

frack113, Nasreddine Bencherchali (Nextron Systems)

Created

2024-05-10

Data Sources

windowsRegistry Set Events

Platforms

windows

References

Tags

attack.privilege-escalationattack.defense-evasionattack.t1548.002

Raw Content

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.defense-evasion
    - 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