Analytics BIOC
Low
✕
A compiled HTML help file wrote a script file to the disk
A compiled HTML help file wrote a script file to the disk. Compiled HTLM help files usually don't write script files to the disk. This behavior is often employed by malware that leverages malicious CHM files to deliver a 2nd stage payload.
- Module:
- Platform Analytics
- Data source:
- XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK tactics: Defense Evasion (TA0005)
ATT&CK techniques: System Binary Proxy Execution: Compiled HTML File (T1218.001)
Attacker's goals:
Deliver a 2nd stage payload or to avoid detection.
Investigative actions:
Check whether the initiator process is benign or normal for the host and/or user performing it. Check the file that was written to the disk for malicious activities.
- Test period:
- N/A (single event)
- Deduplication:
- 1 Day