Screen Capture Activity Via Psr.EXE

Detects execution of Windows Problem Steps Recorder (psr.exe), a utility used to record the user screen and clicks.

Sigma rule (View on GitHub)

 1title: Screen Capture Activity Via Psr.EXE
 2id: 2158f96f-43c2-43cb-952a-ab4580f32382
 3status: test
 4description: Detects execution of Windows Problem Steps Recorder (psr.exe), a utility used to record the user screen and clicks.
 5references:
 6    - https://lolbas-project.github.io/lolbas/Binaries/Psr/
 7    - https://web.archive.org/web/20200229201156/https://www.sans.org/cyber-security-summit/archives/file/summit-archive-1493861893.pdf
 8    - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1560.001/T1560.001.md
 9author: Beyu Denis, oscd.community
10date: 2019-10-12
11modified: 2024-01-04
12tags:
13    - attack.collection
14    - attack.t1113
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        Image|endswith: '\Psr.exe'
21        CommandLine|contains:
22            - '/start'
23            - '-start'
24    condition: selection
25falsepositives:
26    - Unknown
27level: medium

References

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