A newer version is available. For the latest information, see the
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Potential PrintNightmare File Modification
editPotential PrintNightmare File Modification
editDetects the creation or modification of a print driver with an unusual file name. This may indicate attempts to exploit privilege escalation vulnerabilities related to the Print Spooler service. For more information refer to CVE-2021-34527 and verify that the impacted system is investigated.
Rule type: eql
Rule indices:
- winlogbeat-*
- logs-endpoint.events.*
- logs-windows.*
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:
Tags:
- Elastic
- Host
- Windows
- Threat Detection
- Privilege Escalation
Version: 1
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
edit/* This rule is compatible with both Sysmon and Elastic Endpoint */ file where process.name : "spoolsv.exe" and file.name : ("kernelbase.dll", "ntdll.dll", "kernel32.dll", "winhttp.dll", "user32.dll") and file.path : "?:\\Windows\\System32\\spool\\drivers\\x64\\3\\*"
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/