CodeIntegrity - Unsigned Image Loaded

Detects loaded unsigned image on the system

Sigma rule (View on GitHub)

 1title: CodeIntegrity - Unsigned Image Loaded
 2id: c92c24e7-f595-493f-9c98-53d5142f5c18
 3status: test
 4description: Detects loaded unsigned image on the system
 5references:
 6    - https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/event-id-explanations
 7    - https://learn.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/event-tag-explanations
 8    - Internal Research
 9author: Nasreddine Bencherchali (Nextron Systems)
10date: 2023/06/06
11tags:
12    - attack.privilege_escalation
13logsource:
14    product: windows
15    service: codeintegrity-operational
16detection:
17    selection:
18        EventID: 3037 # Code Integrity determined an unsigned image %2 is loaded into the system. Check with the publisher to see if a signed version of the image is available.
19    condition: selection
20falsepositives:
21    - Unlikely
22level: high

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