Analytics BIOC Low

A suspicious direct syscall was executed

A suspicious direct syscall was executed.

Module:
Platform Analytics
Data source:
XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK tactics: Execution (TA0002)
ATT&CK techniques: Native API (T1106)
Detector tags: Direct Syscall Analytics
Attacker's goals:

An attacker might try to use direct syscalls to evade detection from a legitimate program.

Investigative actions:

Investigate the direct syscall-mapped image to verify if it is malicious. Check if this direct syscall is part of the process execution flow.

Test period:
N/A (single event)
Deduplication:
1 Day
2 variations:
  • A suspicious direct syscall was executed by unsigned process from a user folder High (parent: Low)
  • A suspicious direct syscall was executed by a DLL host application Medium (parent: Low)