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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: 5m
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: 3
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\\*"]
Framework: 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/