Analytics BIOC Low
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Rundll32.exe executes a rare unsigned module

Rundll32.exe executes a rare unsigned module, which can indicate an attacker's malicious execution.

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:

Evading detections by running code from a signed Microsoft executable.

Investigative actions:

Check whether the loaded module with the corresponding hash is benign and if this was a desired behavior as part of its normal execution flow.

Test period:
N/A (single event)
Deduplication:
1 Day
2 variations:
  • Rundll32.exe executes a rare unsigned module with very high entropy Medium (parent: Low)
  • Rundll32.exe executes a rare unsigned module with suspicious characteristics Medium (parent: Low)