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 Point and Print DLL
editSuspicious Print Spooler Point and Print DLL
editDetects 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:
- logs-endpoint.events.*
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:
- https://www.accenture.com/us-en/blogs/cyber-defense/discovering-exploiting-shutting-down-dangerous-windows-print-spooler-vulnerability
- https://github.com/sbousseaden/EVTX-ATTACK-SAMPLES/blob/master/Privilege%20Escalation/privesc_sysmon_cve_20201030_spooler.evtx
- https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2020-1030
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Privilege Escalation
Version: 100 (version history)
Added (Elastic Stack release): 7.11.0
Last modified (Elastic Stack release): 8.5.0
Rule authors: Elastic
Rule license: Elastic License v2
Rule query
editsequence 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
editFramework: MITRE ATT&CKTM
-
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 4 (8.4.0 release)
-
- Formatting only
- Version 3 (8.1.0 release)
-
- Formatting only
- Version 2 (7.12.0 release)
-
- Formatting only