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Detection rules › Sigma

Disable Windows Firewall by Registry

Status
test
Severity
medium
Log source
category registry_set, product windows
Author
frack113
Source
github.com/SigmaHQ/sigma

Detect set EnableFirewall to 0 to disable the Windows firewall

MITRE ATT&CK coverage

TacticTechniques
Defense Impairment

Telemetry coverage

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

Rule body

title: Disable Windows Firewall by Registry
id: e78c408a-e2ea-43cd-b5ea-51975cf358c0
status: test
description: Detect set EnableFirewall to 0 to disable the Windows firewall
references:
    - https://github.com/redcanaryco/atomic-red-team/blob/40b77d63808dd4f4eafb83949805636735a1fd15/atomics/T1562.004/T1562.004.md
author: frack113
date: 2022-08-19
modified: 2023-08-17
tags:
    - attack.defense-impairment
    - attack.t1686.003
logsource:
    category: registry_set
    product: windows
detection:
    selection:
        TargetObject|endswith:
            - \SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile\EnableFirewall
            - \SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile\EnableFirewall
        Details: DWORD (0x00000000)
    condition: selection
falsepositives:
    - Unknown
level: medium

Stages and Predicates

Stage 0: condition

selection

Stage 1: selection

selection:
    TargetObject|endswith:
        - \SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile\EnableFirewall
        - \SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile\EnableFirewall
    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)"
TargetObjectends_with
  • \SOFTWARE\Policies\Microsoft\WindowsFirewall\DomainProfile\EnableFirewall
  • \SOFTWARE\Policies\Microsoft\WindowsFirewall\StandardProfile\EnableFirewall
field:"TargetObject" kind:ends_with