Analytics BIOC
Medium
✕
Rundll32.exe running with no command-line arguments
Rundll32.exe is meant to run with parameters, so the absence of them is extremely suspicious; this behavior is used in the default configuration of Cobalt Strike.
- Module:
- Platform Analytics
- Data source:
- XDR Agent
ATT&CK tactics: Defense Evasion (TA0005)
ATT&CK techniques: System Binary Proxy Execution: Rundll32 (T1218.011)
Detector tags: LOLBIN Execution Analytics
Attacker's goals:
Run as a signed Microsoft executables to avoid detection. Rundll32 is the default process used by Cobalt Strike for running post-exploitation tools.
Investigative actions:
Check for any injection event to the Rundll32 process. Check the causality of execution for any injections.
- Test period:
- N/A (single event)
- Deduplication:
- 1 Day