This documentation contains work-in-progress information for future Elastic Stack and Cloud releases. Use the version selector to view supported release docs. It also contains some Elastic Cloud serverless information. Check out our serverless docs for more details.

« Suspicious Print Spooler SPL File Created Suspicious Process Access via Direct System Call »

› › ›

Suspicious PrintSpooler Service Executable File Creation

edit

Suspicious PrintSpooler Service Executable File Creation

edit

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 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\\*")

Threat mapping

edit

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/

Rule version history

edit

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

« Suspicious Print Spooler SPL File Created Suspicious Process Access via Direct System Call »