PST Export Alert Using eDiscovery Alert

Description

Alert on when a user has performed an eDiscovery search or exported a PST file from the search. This PST file usually has sensitive information including email body content

Query · sigma

selection:
  eventSource: SecurityComplianceCenter
  eventName: eDiscovery search started or exported
  status: success
condition: selection

Known false positives

  • PST export can be done for legitimate purposes but due to the sensitive nature of its content it must be monitored.
Raw source PST Export Alert Using eDiscovery Alert · Sigma
Esc
Published by SigmaHQ/sigma ↗, licensed under Detection Rule License 1.1 ↗. Reproduced here unmodified. 
title: PST Export Alert Using eDiscovery Alert
id: 18b88d08-d73e-4f21-bc25-4b9892a4fdd0
related:
    - id: 6897cd82-6664-11ed-9022-0242ac120002
      type: similar
status: test
description: Alert on when a user has performed an eDiscovery search or exported a PST file from the search. This PST file usually has sensitive information including email body content
references:
    - https://learn.microsoft.com/en-us/microsoft-365/compliance/alert-policies?view=o365-worldwide
author: Sorina Ionescu
date: 2022-02-08
modified: 2022-11-17
tags:
    - attack.collection
    - attack.t1114
logsource:
    service: threat_management
    product: m365
    definition: Requires the 'eDiscovery search or exported' alert to be enabled
detection:
    selection:
        eventSource: SecurityComplianceCenter
        eventName: 'eDiscovery search started or exported'
        status: success
    condition: selection
falsepositives:
    - PST export can be done for legitimate purposes but due to the sensitive nature of its content it must be monitored.
level: medium

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.