AppLocker Prevented Application or Script from Running

calendar Dec 24, 2025 · attack.execution attack.t1204.002 attack.t1059.001 attack.t1059.003 attack.t1059.005 attack.t1059.006 attack.t1059.007  ·
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Detects when AppLocker prevents the execution of an Application, DLL, Script, MSI, or Packaged-App from running.

Sigma rule (View on GitHub)

 1title: AppLocker Prevented Application or Script from Running
 2id: 401e5d00-b944-11ea-8f9a-00163ecd60ae
 3status: test
 4description: |
 5        Detects when AppLocker prevents the execution of an Application, DLL, Script, MSI, or Packaged-App from running.
 6references:
 7    - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/applocker/what-is-applocker
 8    - https://learn.microsoft.com/en-us/windows/security/application-security/application-control/windows-defender-application-control/applocker/using-event-viewer-with-applocker
 9    - https://nxlog.co/documentation/nxlog-user-guide/applocker.html
10author: Pushkarev Dmitry
11date: 2020-06-28
12modified: 2025-12-03
13tags:
14    - attack.execution
15    - attack.t1204.002
16    - attack.t1059.001
17    - attack.t1059.003
18    - attack.t1059.005
19    - attack.t1059.006
20    - attack.t1059.007
21logsource:
22    product: windows
23    service: applocker
24detection:
25    selection:
26        EventID:
27            - 8004 # EXE and DLL
28            - 8007 # MSI and Script
29            - 8022 # Packaged app execution
30            - 8025 # Packaged app deployment
31    condition: selection
32falsepositives:
33    - Unlikely, since this event notifies about blocked application execution. Tune your applocker rules to avoid blocking legitimate applications.
34level: medium

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