Analytics BIOC Low
✕

Executable or Script file written by a web server process

An uncommon executable or script file was created, written, or renamed by a web server process.

Module:
Platform Analytics
Data source:
XDR Agent with eXtended Threat Hunting (XTH)
ATT&CK tactics: Initial Access (TA0001) Persistence (TA0003)
ATT&CK techniques: External Remote Services (T1133) Server Software Component: Web Shell (T1505.003)
Detector tags: Webshell Analytics
Attacker's goals:

Gain the ability to execute commands on the host and establish persistence.

Investigative actions:

Review web server access logs for suspicious requests or uploads. Inspect the dropped file to determine whether it contains malicious content.

Test period:
N/A (single event)
Deduplication:
1 Day
3 variations:
  • A driver was written by a web server process Low
  • Executable or Script file written by a web server process in an internet facing server Low
  • Executable or Script file written by a web server process with connections from various sources and high web traffic Low