detection.wiki

Detection rules › Sigma

Windows Defender Exclusions Added - Registry

Status
test
Severity
medium
Log source
category registry_set, product windows
Author
Christian Burkard (Nextron Systems)
Source
github.com/SigmaHQ/sigma

Detects the Setting of Windows Defender Exclusions

Known false positives

  • Administrator actions

MITRE ATT&CK coverage

TacticTechniques
Defense Impairment

Telemetry coverage

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

Rule body

title: Windows Defender Exclusions Added - Registry
id: a982fc9c-6333-4ffb-a51d-addb04e8b529
related:
    - id: 1321dc4e-a1fe-481d-a016-52c45f0c8b4f
      type: derived
status: test
description: Detects the Setting of Windows Defender Exclusions
references:
    - https://twitter.com/_nullbind/status/1204923340810543109
author: Christian Burkard (Nextron Systems)
date: 2021-07-06
modified: 2023-08-17
tags:
    - attack.defense-impairment
    - attack.t1685
logsource:
    product: windows
    category: registry_set
detection:
    selection2:
        TargetObject|contains: '\Microsoft\Windows Defender\Exclusions'
    condition: selection2
falsepositives:
    - Administrator actions
level: medium

Stages and Predicates

Stage 0: condition

selection2

Stage 1: selection2

selection2:
    TargetObject|contains: '\Microsoft\Windows Defender\Exclusions'

Indicators

These rows show field, operator, and value matches.

FieldKindValuesSearch
TargetObjectmatch
  • \Microsoft\Windows Defender\Exclusions
field:"TargetObject" kind:match value:"\Microsoft\Windows Defender\Exclusions"