PowerShell Web Access Feature Enabled Via DISM

calendar Oct 23, 2025 · attack.privilege-escalation attack.defense-evasion attack.persistence attack.t1548.002  ·
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Detects the use of DISM to enable the PowerShell Web Access feature, which could be used for remote access and potential abuse

Sigma rule (View on GitHub)

 1title: PowerShell Web Access Feature Enabled Via DISM
 2id: 7e8f2d3b-9c1a-4f67-b9e8-8d9006e0e51f
 3status: test
 4description: Detects the use of DISM to enable the PowerShell Web Access feature, which could be used for remote access and potential abuse
 5references:
 6    - https://docs.microsoft.com/en-us/powershell/module/dism/enable-windowsoptionalfeature
 7    - https://www.cisa.gov/news-events/cybersecurity-advisories/aa24-241a
 8    - https://gist.github.com/MHaggis/7e67b659af9148fa593cf2402edebb41
 9author: Michael Haag
10date: 2024-09-03
11tags:
12    - attack.privilege-escalation
13    - attack.defense-evasion
14    - attack.persistence
15    - attack.t1548.002
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection_img:
21        - Image|endswith: '\dism.exe'
22        - OriginalFileName: 'DISM.EXE'
23    selection_cli:
24        CommandLine|contains|all:
25            - 'WindowsPowerShellWebAccess'
26            - '/online'
27            - '/enable-feature'
28    condition: all of selection_*
29falsepositives:
30    - Legitimate PowerShell Web Access installations by administrators
31level: high

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