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Elastic Docs ›Elastic Security Solution [master] ›Detections and alerts ›Prebuilt rule reference

Suspicious PrintSpooler Service Executable File Creation

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Suspicious PrintSpooler Service Executable File Creationedit

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: 5 minutes

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: 100 (version history)

Added (Elastic Stack release): 7.10.0

Last modified (Elastic Stack release): 8.5.0

Rule authors: Elastic

Rule license: Elastic License v2

Investigation guideedit












Rule queryedit








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\\*")











Threat mappingedit




Framework: MITRE ATT&CKTM














Rule version historyedit










Version 100 (8.5.0 release)








    

  • 
Formatting only

    • 









Version 7 (8.4.0 release)








    

  • 
Formatting only

    • 









Version 5 (8.2.0 release)








    

  • 
Formatting only

    • 









Version 4 (7.13.0 release)








    

  • 

    Updated query, changed from:
    

    

    

    event.category:file and not event.type:deletion and
process.name:spoolsv.exe and file.extension:(exe or dll) and not
file.path:(C\:\\Windows\\System32\\spool\\* or C\:\\Windows\\Temp\\*
or C\:\\Users\\*)
    

    

    • 









Version 3 (7.12.0 release)








    

  • 
Formatting only

    • 









Version 2 (7.11.2 release)








    

  • 
Formatting only

    • 




















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