Whoami Recon Writing Output to File

calendar Mar 26, 2024 · attack.discovery attack.t1033  ·
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SocGholish employs several scripted reconnaissance commands. While much of this activity occurs in memory, one that stands out is the execution of whoami with the output redirected to a local temp file with the naming convention rad<5-hex-chars>.tmp. Part of the RedCanary 2024 Threat Detection Report.

Sigma rule (View on GitHub)

 1title: Whoami Recon Writing Output to File
 2id: abcdf274-2fbd-4736-a16b-032fcac54eee
 3status: experimental
 4description: |
 5    SocGholish employs several scripted reconnaissance commands. While much of this activity 
 6    occurs in memory, one that stands out is the execution of whoami with the output redirected 
 7    to a local temp file with the naming convention rad<5-hex-chars>.tmp. Part of the RedCanary 
 8    2024 Threat Detection Report.    
 9references:
10    - https://redcanary.com/threat-detection-report/threats/socgholish/
11author: RedCanary, Sigma formatting by Micah Babinski
12date: 2024/03/21
13tags:
14    - attack.discovery
15    - attack.t1033
16logsource:
17    category: process_creation
18    product: windows
19detection:
20    selection:
21        ParentImage|endswith: '\wscript.exe'
22        Image|endswith: '\cmd.exe'
23        CommandLine|contains: 'whoami /all >>'
24    condition: selection
25falsepositives:
26    - Unknown
27level: low```

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