IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Suspicious PrintSpooler SPL File Creatededit
Detects attempts to exploit privilege escalation vulnerabilities related to the Print Spooler service including CVE-2020-1048 and CVE-2020-1337. .
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: 4 (version history)
Added (Elastic Stack release): 7.10.0
Last modified (Elastic Stack release): 7.13.0
Rule authors: Elastic
Rule license: Elastic License v2
Investigation guideedit
## Threat intel Refer to CVEs, CVE-2020-1048 and CVE-2020-1337 for further information on the vulnerability and exploit. Verify that the relevant system is patched.
Rule queryedit
file where event.type != "deletion" and file.extension : "spl" and file.path : "?:\\Windows\\System32\\spool\\PRINTERS\\*" and not process.name : ("spoolsv.exe", "printfilterpipelinesvc.exe", "PrintIsolationHost.exe", "splwow64.exe", "msiexec.exe", "poqexec.exe")
Threat mappingedit
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/
Rule version historyedit
- Version 4 (7.13.0 release)
-
-
Updated query, changed from:
event.category:file and not event.type:deletion and file.extension:(spl or SPL) and file.path:C\:\\Windows\\System32\\spool\\PRINTERS\\* and not process.name:(spoolsv.exe or printfilterpipelinesvc.exe or PrintIsolationHost.exe or splwow64.exe or msiexec.exe or poqexec.exe)
-
- Version 3 (7.12.0 release)
-
- Formatting only
- Version 2 (7.11.2 release)
-
- Formatting only