Suspicious Print Spooler Point and Print DLLedit

Detects attempts to exploit a privilege escalation vulnerability (CVE-2020-1030) related to the print spooler service. Exploitation involves chaining multiple primitives to load an arbitrary DLL into the print spooler process running as SYSTEM.

Rule type: eql

Rule indices:


Severity: high

Risk score: 73

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Host
  • Windows
  • Threat Detection
  • Privilege Escalation

Version: 3

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule queryedit

sequence by with maxspan=30s
[registry where
 registry.path : "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\Printers\\*\\SpoolDirectory" and : "C:\\Windows\\System32\\spool\\drivers\\x64\\4"]
[registry where
 registry.path : "HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Print\\Printers\\*\\CopyFiles\\Payload\\Module" and : "C:\\Windows\\System32\\spool\\drivers\\x64\\4\\*"]