Suspicious X509Enrollment - Process Creation

Detect use of X509Enrollment

Sigma rule (View on GitHub)

 1title: Suspicious X509Enrollment - Process Creation
 2id: 114de787-4eb2-48cc-abdb-c0b449f93ea4
 3related:
 4    - id: 504d63cb-0dba-4d02-8531-e72981aace2c
 5      type: similar
 6status: test
 7description: Detect use of X509Enrollment
 8references:
 9    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=42
10    - https://speakerdeck.com/heirhabarov/hunting-for-powershell-abuse?slide=41
11    - https://learn.microsoft.com/en-us/dotnet/api/microsoft.hpc.scheduler.store.cx509enrollmentwebclassfactoryclass?view=hpc-sdk-5.1.6115
12author: frack113
13date: 2022-12-23
14tags:
15    - attack.defense-evasion
16    - attack.t1553.004
17logsource:
18    product: windows
19    category: process_creation
20detection:
21    selection:
22        CommandLine|contains:
23            - 'X509Enrollment.CBinaryConverter'
24            - '884e2002-217d-11da-b2a4-000e7bbb2b09'
25    condition: selection
26falsepositives:
27    - Legitimate administrative script
28level: medium

References

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