IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.

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Suspicious Print Spooler Point and Print DLL

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Suspicious Print Spooler Point and Print DLL

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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:

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: 2 (version history)

Added (Elastic Stack release): 7.11.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule query

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

Threat mapping

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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

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Version 2 (7.12.0 release)

Formatting only

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