New or Modified Federation Domainedit

Identifies a new or modified federation domain, which can be used to create a trust between O365 and an external identity provider.

Rule type: query

Rule indices:

  • filebeat-*
  • logs-o365*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Cloud
  • Microsoft 365
  • Continuous Monitoring
  • SecOps
  • Identity and Access

Version: 1

Added (Elastic Stack release): 7.16.0

Rule authors: Austin Songer

Rule license: Elastic License v2

Investigation guideedit

## Config

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

Rule queryedit

event.dataset:o365.audit and event.provider:Exchange and
event.category:web and event.action:("Set-AcceptedDomain" or "Set-
MsolDomainFederationSettings" or "Add-FederatedDomain" or "New-
AcceptedDomain" or "Remove-AcceptedDomain" or "Remove-
FederatedDomain") and event.outcome:success

Threat mappingedit