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Detection rules › Sigma

Disable PUA Protection on Windows Defender

Status
test
Severity
high
Log source
category registry_set, product windows
Author
Austin Songer @austinsonger
Source
github.com/SigmaHQ/sigma

Detects disabling Windows Defender PUA protection

MITRE ATT&CK coverage

TacticTechniques
Defense Impairment

Telemetry coverage

ProviderRecord / event type
SysmonEvent ID 13: RegistryEvent (Value Set)

Rule body

title: Disable PUA Protection on Windows Defender
id: 8ffc5407-52e3-478f-9596-0a7371eafe13
status: test
description: Detects disabling Windows Defender PUA protection
references:
    - https://www.tenforums.com/tutorials/32236-enable-disable-microsoft-defender-pua-protection-windows-10-a.html
author: Austin Songer @austinsonger
date: 2021-08-04
modified: 2023-08-17
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|contains: '\Policies\Microsoft\Windows Defender\PUAProtection'
        Details: 'DWORD (0x00000000)'
    condition: selection
falsepositives:
    - Unknown
level: high

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    TargetObject|contains: '\Policies\Microsoft\Windows Defender\PUAProtection'
    Details: 'DWORD (0x00000000)'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
Detailseq
  • DWORD (0x00000000) corpus 38 (sigma 36, chronicle 2)
field:"Details" kind:eq value:"DWORD (0x00000000)"
TargetObjectmatch
  • \Policies\Microsoft\Windows Defender\PUAProtection
field:"TargetObject" kind:match value:"\Policies\Microsoft\Windows Defender\PUAProtection"