WhoAmI as Parameter

calendar Feb 1, 2023 · attack.discovery attack.t1033 car.2016-03-001  ·
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Detects a suspicious process command line that uses whoami as first parameter (as e.g. used by EfsPotato)

Sigma rule (View on GitHub)

 1title: WhoAmI as Parameter
 2id: e9142d84-fbe0-401d-ac50-3e519fb00c89
 3status: test
 4description: Detects a suspicious process command line that uses whoami as first parameter (as e.g. used by EfsPotato)
 5references:
 6    - https://twitter.com/blackarrowsec/status/1463805700602224645?s=12
 7author: Florian Roth (Nextron Systems)
 8date: 2021/11/29
 9modified: 2022/12/25
10tags:
11    - attack.discovery
12    - attack.t1033
13    - car.2016-03-001
14logsource:
15    category: process_creation
16    product: windows
17detection:
18    selection:
19        CommandLine|contains: '.exe whoami'
20    condition: selection
21falsepositives:
22    - Unknown
23level: high

References

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