Suspicious PrintSpooler Service Executable File Creation

Detects attempts to exploit privilege escalation vulnerabilities related to the Print Spooler service. For more information refer to the following CVE’s - CVE-2020-1048, CVE-2020-1337 and CVE-2020-1300 and verify that the impacted system is patched.

Rule type: eql

Rule indices:

winlogbeat-*
logs-endpoint.events.*
logs-windows.*

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

References:

Tags:

Elastic
Host
Windows
Threat Detection
Privilege Escalation

Version: 7

Rule authors:

Elastic

Rule license: Elastic License v2

Investigation guide

edit

Rule query

edit

file where event.type != "deletion" and process.name : "spoolsv.exe" and
  file.extension : ("exe", "dll") and
  not file.path : ("?:\\Windows\\System32\\spool\\*", "?:\\Windows\\Temp\\*", "?:\\Users\\*")

Framework: MITRE ATT&CK^TM

Tactic:
- Name: Privilege Escalation
- ID: TA0004
- Reference URL: https://attack.mitre.org/tactics/TA0004/
Technique:
- Name: Exploitation for Privilege Escalation
- ID: T1068
- Reference URL: https://attack.mitre.org/techniques/T1068/

« Suspicious DLL Loaded for Persistence or Privilege Escalation Suspicious Print Spooler File Deletion »