IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Microsoft 365 Exchange Malware Filter Rule Modification Microsoft 365 Exchange Safe Attachment Rule Disabled »
Elastic Docs ›Elastic Security Solution [8.13] ›Detections and alerts ›Prebuilt rule reference

Microsoft 365 Exchange Management Group Role Assignment

edit

Microsoft 365 Exchange Management Group Role Assignment

edit

Identifies when a new role is assigned to a management group in Microsoft 365. An adversary may attempt to add a role in order to maintain persistence in an environment.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-o365*

Severity: medium

Risk score: 47

Runs every: 5m

Searches indices from: now-30m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Domain: Cloud
  • Data Source: Microsoft 365
  • Use Case: Identity and Access Audit
  • Tactic: Persistence

Version: 206

Rule authors:

  • Elastic

Rule license: Elastic License v2

Investigation guide

edit

Setup

edit

The Office 365 Logs Fleet integration, Filebeat module, or similarly structured data is required to be compatible with this rule.

Rule query

edit
event.dataset:o365.audit and event.provider:Exchange and event.category:web and event.action:"New-ManagementRoleAssignment" and event.outcome:success

Framework: MITRE ATT&CKTM

« Microsoft 365 Exchange Malware Filter Rule Modification Microsoft 365 Exchange Safe Attachment Rule Disabled »