Windows Firewall Profile Disabled — Sigma Rule

Rule metadata and linked tags

Author: Austin Songer @austinsonger. Source status: test; severity: medium. Source dates: 2021-10-12 / 2022-12-30.

{
  "product": "windows",
  "category": "ps_script",
  "definition": "Requirements: Script Block Logging must be enabled"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: f943e179cd5ada26fce27930357291b831aaada90cfa754517b6cc9de519609a

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Windows Firewall Profile Disabled
id: 488b44e7-3781-4a71-888d-c95abfacf44d
related:
    - id: 12f6b752-042d-483e-bf9c-915a6d06ad75
      type: similar
status: test
description: Detects when a user disables the Windows Firewall via a Profile to help evade defense.
references:
    - https://learn.microsoft.com/en-us/powershell/module/netsecurity/set-netfirewallprofile?view=windowsserver2022-ps
    - https://www.tutorialspoint.com/how-to-get-windows-firewall-profile-settings-using-powershell
    - https://web.archive.org/web/20230929023836/http://powershellhelp.space/commands/set-netfirewallrule-psv5.php
    - http://woshub.com/manage-windows-firewall-powershell/
    - https://www.elastic.co/guide/en/security/current/windows-firewall-disabled-via-powershell.html
author: Austin Songer @austinsonger
date: 2021-10-12
modified: 2022-12-30
tags:
    - attack.defense-impairment
    - attack.t1686.003
logsource:
    product: windows
    category: ps_script
    definition: 'Requirements: Script Block Logging must be enabled'
detection:
    selection_args:
        ScriptBlockText|contains|all:
            - 'Set-NetFirewallProfile '
            - ' -Enabled '
            - ' False'
    selection_opt:
        ScriptBlockText|contains:
            - ' -All '
            - 'Public'
            - 'Domain'
            - 'Private'
    condition: all of selection*
falsepositives:
    - Unknown
level: medium

Original YAML and metadata in JSON

False positives

• Unknown

Source references

• https://learn.microsoft.com/en-us/powershell/module/netsecurity/set-netfirewallprofile?view=windowsserver2022-ps
• https://www.tutorialspoint.com/how-to-get-windows-firewall-profile-settings-using-powershell
• https://web.archive.org/web/20230929023836/http://powershellhelp.space/commands/set-netfirewallrule-psv5.php
• http://woshub.com/manage-windows-firewall-powershell/
• https://www.elastic.co/guide/en/security/current/windows-firewall-disabled-via-powershell.html