Suspicious print processor registered

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	1 Day
Required Data	XDR Agent
ATT&CK Tactic	Persistence (TA0003)
ATT&CK Technique	Boot or Logon Autostart Execution: Print Processors (T1547.012)
Severity	Medium

Description

The endpoint registered a new print processor, which may be used to gain persistence on the host by loading libraries into the time management service.

Attacker's Goals

Gain persistence using the legitimate windows print processor mechanism, which loads libraries into Windows services.

Investigative actions

• Verify if the registered library is malicious.
• Check if the installing software is a malicious binary.
• Check for any suspicious network activity from svchost.exe or spoolsv.exe.