Sigma rule: CVE-2021-1675 Print Spooler Exploitation IPC Access

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-1d66866b4548, updated 2022-10-05T00:00:00.000Z.

Rule

Title
CVE-2021-1675 Print Spooler Exploitation IPC Access
Status
test
Level
critical
Author
INIT_6
Date
2021-07-02
Modified
2022-10-05
File
rules-emerging-threats/2021/Exploits/CVE-2021-1675/win_security_exploit_cve_2021_1675_printspooler_security.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects remote printer driver load from Detailed File Share in Security logs that are a sign of successful exploitation attempts against print spooler vulnerability CVE-2021-1675 and CVE-2021-34527

Log source

product
windows
service
security

Detection

selection:
    EventID: 5145
    ShareName: '\\\\\*\\IPC$' # looking for the string \\*\IPC$
    RelativeTargetName: 'spoolss'
    AccessMask: '0x3'
    ObjectType: 'File'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.execution
  • attack.t1569
  • cve.2021-1675
  • cve.2021-34527
  • detection.emerging-threats

CVEs this rule names

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Exploits/CVE-2021-1675/win_security_exploit_cve_2021_1675_printspooler_security.yml

Sources and licences

  • SigmaHQ

    "CVE-2021-1675 Print Spooler Exploitation IPC Access" by INIT_6 (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2021/Exploits/CVE-2021-1675/win_security_exploit_cve_2021_1675_printspooler_security.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: CVE-2021-1675 Print Spooler Exploitation IPC Access",
entity page, dataset version ref-1d66866b4548, updated 2022-10-05T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/8fe1c584-ee61-444b-be21-e9054b229694 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 8fe1c584-ee61-444b-be21-e9054b229694, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.