Suspicious Command Line Indicating BlackCat Execution with Get UUID Option

calendar Dec 6, 2022 · attack.execution attack.t1059 attack.t1204  ·
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Detects process execution with the --access-token flag accompanied by a child process with a 'get uuid' option.

Sigma rule (View on GitHub)

 1title: Suspicious Command Line Indicating BlackCat Execution with Get UUID Option
 2id: 76fe5991-2bff-4ae2-adcf-28a95788027f
 3status: experimental
 4description: Detects process execution with the --access-token flag accompanied by a child process with a 'get uuid' option.
 5references:
 6    - https://www.microsoft.com/en-us/security/blog/2022/06/13/the-many-lives-of-blackcat-ransomware/
 7author: Micah Babinski
 8date: 2022/12/04
 9tags:
10    - attack.execution
11    - attack.t1059
12    - attack.t1204
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection:
18        ParentCommandLine|contains: '--access-token'
19        CommandLine|contains: 'get uuid'
20    condition: selection
21falsepositives:
22    - Unknown
23level: high```

References

  • The many lives of BlackCat ransomware | Microsoft Security Blog

    The use of an unconventional programming language, multiple target devices and possible entry points, and affiliation with prolific threat activity groups have made the BlackCat ransomware a prevalent threat and a prime example of the growing ransomware-as-a-service (RaaS) gig economy.


    Read More

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