HackTool - F-Secure C3 Load by Rundll32

 1title: HackTool - F-Secure C3 Load by Rundll32
 2id: b18c9d4c-fac9-4708-bd06-dd5bfacf200f
 3status: test
 4description: F-Secure C3 produces DLLs with a default exported StartNodeRelay function.
 5references:
 6    - https://github.com/FSecureLABS/C3/blob/11a081fd3be2aaf2a879f6b6e9a96ecdd24966ef/Src/NodeRelayDll/NodeRelayDll.cpp#L12
 7author: Alfie Champion (ajpc500)
 8date: 2021/06/02
 9modified: 2023/03/05
10tags:
11    - attack.defense_evasion
12    - attack.t1218.011
13logsource:
14    category: process_creation
15    product: windows
16detection:
17    selection:
18        CommandLine|contains|all:
19            - 'rundll32.exe'
20            - '.dll'
21            - 'StartNodeRelay'
22    condition: selection
23falsepositives:
24    - Unknown
25level: critical

References

• C3/Src/NodeRelayDll/NodeRelayDll.cpp at 11a081fd3be2aaf2a879f6b6e9a96ecdd24966ef · WithSecureLabs/C3

  

  Custom Command and Control (C3). A framework for rapid prototyping of custom C2 channels, while still providing integration with existing offensive toolkits. - WithSecureLabs/C3

  
  Read More

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