Sigma rule: Protected Storage Service Access

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-fad488c2a9d7, updated 2021-11-27T00:00:00.000Z.

Rule

Title
Protected Storage Service Access
Status
test
Level
high
Author
Roberto Rodriguez @Cyb3rWard0g
Date
2019-08-10
Modified
2021-11-27
File
rules/windows/builtin/security/win_security_protected_storage_service_access.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects access to a protected_storage service over the network. Potential abuse of DPAPI to extract domain backup keys from Domain Controllers

Log source

product
windows
service
security

Detection

selection:
    EventID: 5145
    ShareName|contains: 'IPC'
    RelativeTargetName: 'protected_storage'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.lateral-movement
  • attack.t1021.002

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/windows/builtin/security/win_security_protected_storage_service_access.yml

Sources and licences

  • SigmaHQ

    "Protected Storage Service Access" by Roberto Rodriguez @Cyb3rWard0g (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/windows/builtin/security/win_security_protected_storage_service_access.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: Protected Storage Service Access",
entity page, dataset version ref-fad488c2a9d7, updated 2021-11-27T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/45545954-4016-43c6-855e-eae8f1c369dc (accessed 2026-11-03).
Underlying source: SigmaHQ rule 45545954-4016-43c6-855e-eae8f1c369dc, 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.