Activate Suppression of Windows Security Center Notifications

Hunt Hypothesis

Detect set Notification_Suppress to 1 to disable the Windows security center notification

Detection Rule

Sigma (Original)

title: Activate Suppression of Windows Security Center Notifications
id: 0c93308a-3f1b-40a9-b649-57ea1a1c1d63
status: test
description: Detect set Notification_Suppress to 1 to disable the Windows security center notification
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md
author: frack113
date: 2022-08-19
modified: 2023-08-17
tags:
    - attack.persistence
    - attack.defense-impairment
    - attack.t1112
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|endswith: 'SOFTWARE\Policies\Microsoft\Windows Defender\UX Configuration\Notification_Suppress'
        Details: DWORD (0x00000001)
    condition: selection
falsepositives:
    - Unknown
level: medium

KQL (Azure Sentinel)

imRegistry
| where RegistryKey endswith "SOFTWARE\\Policies\\Microsoft\\Windows Defender\\UX Configuration\\Notification_Suppress" and RegistryValueData =~ "DWORD (0x00000001)"

KQL (Microsoft 365 Defender)

DeviceRegistryEvents
| where RegistryKey endswith "SOFTWARE\\Policies\\Microsoft\\Windows Defender\\UX Configuration\\Notification_Suppress" and RegistryValueData =~ "DWORD (0x00000001)"

Required Data Sources

False Positive Guidance

• Unknown

MITRE ATT&CK Context

• Tactic: Persistence
• Technique: T1112 — T1112

References

• https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1112/T1112.md
• SigmaHQ Rule