Sigma rule: PST Export Alert Using New-ComplianceSearchAction

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-90b9d0e9d646, updated 2022-11-17T00:00:00.000Z.

Rule

Title
PST Export Alert Using New-ComplianceSearchAction
Status
test
Level
medium
Author
Nikita Khalimonenkov
Date
2022-11-17
File
rules/cloud/m365/threat_management/microsoft365_pst_export_alert_using_new_compliancesearchaction.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Alert when a user has performed an export to a search using 'New-ComplianceSearchAction' with the '-Export' flag. This detection will detect PST export even if the 'eDiscovery search or exported' alert is disabled in the O365.This rule will apply to ExchangePowerShell usage and from the cloud.

Log source

product
m365
service
threat_management

Detection

selection:
    eventSource: SecurityComplianceCenter
    Payload|contains|all:
        - 'New-ComplianceSearchAction'
        - 'Export'
        - 'pst'
condition: selection

False positives (as the rule lists them)

  • Exporting a PST can be done for legitimate purposes by legitimate sources, but due to the sensitive nature of PST content, it must be monitored.

Tags

  • attack.collection
  • attack.t1114

MITRE ATT&CK ids this rule names

Related rules

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/cloud/m365/threat_management/microsoft365_pst_export_alert_using_new_compliancesearchaction.yml

Sources and licences

  • SigmaHQ

    "PST Export Alert Using New-ComplianceSearchAction" by Nikita Khalimonenkov (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/m365/threat_management/microsoft365_pst_export_alert_using_new_compliancesearchaction.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: PST Export Alert Using New-ComplianceSearchAction",
entity page, dataset version ref-90b9d0e9d646, updated 2022-11-17T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/6897cd82-6664-11ed-9022-0242ac120002 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 6897cd82-6664-11ed-9022-0242ac120002, 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.