New Application in AppCompat

A General detection for a new application in AppCompat. This indicates an application executing for the first time on an endpoint.

Sigma rule (View on GitHub)

 1title: New Application in AppCompat
 2id: 60936b49-fca0-4f32-993d-7415edcf9a5d
 3status: test
 4description: A General detection for a new application in AppCompat. This indicates an application executing for the first time on an endpoint.
 5references:
 6    - https://github.com/OTRF/detection-hackathon-apt29/issues/1
 7    - https://github.com/OTRF/ThreatHunter-Playbook/blob/2d4257f630f4c9770f78d0c1df059f891ffc3fec/docs/evals/apt29/detections/1.A.1_DFD6A782-9BDB-4550-AB6B-525E825B095E.md
 8author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)
 9date: 2020/05/02
10modified: 2023/08/17
11tags:
12    - attack.execution
13    - attack.t1204.002
14logsource:
15    product: windows
16    category: registry_set
17detection:
18    selection:
19        TargetObject|contains: '\AppCompatFlags\Compatibility Assistant\Store\'
20    condition: selection
21falsepositives:
22    - This rule is to explore new applications on an endpoint. False positives depends on the organization.
23    - Newly setup system.
24    - Legitimate installation of new application.
25level: informational

References

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