Shrpubw Execution from Unexpected File Path

calendar Sep 1, 2023 · attack.persistence attack.t1574 attack.t1574.001  ·
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Looks for the execution of svchost without the normal -k parameter. Inspired by the 2022 Red Canary Threat Detection report.

Sigma rule (View on GitHub)

 1title: Shrpubw Execution from Unexpected File Path
 2id: 3b9fc5ea-6288-4c03-882a-af00df4f5b32
 3status: experimental
 4description: Looks for the execution of svchost without the normal -k parameter. Inspired
 5    by the 2022 Red Canary Threat Detection report.
 6references:
 7    - https://redcanary.com/threat-detection-report/techniques/dll-search-order-hijacking/
 8author: Micah Babinski
 9date: 2022/11/04
10tags:
11    - attack.persistence
12    - attack.t1574
13    - attack.t1574.001
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        Image|endswith: '\shrpubw.exe'
20    filter:
21        Image|contains:
22            - 'windows\system32\shrpubw.exe'
23            - 'windows\winsxs'
24    condition: selection and not filter
25falsepositives:
26    - Unknown
27level: high```

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