Sigma rule: New Federated Domain Added

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-87567c794e4d, updated 2023-09-18T00:00:00.000Z.

Rule

Title
New Federated Domain Added
Status
test
Level
medium
Author
Splunk Threat Research Team (original rule), Harjot Singh @cyb3rjy0t (sigma rule)
Date
2023-09-18
File
rules/cloud/m365/audit/microsoft365_new_federated_domain_added_audit.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects the addition of a new Federated Domain.

Log source

product
m365
service
audit

Detection

selection_domain:
    Operation|contains: 'domain'
selection_operation:
    Operation|contains:
        - 'add'
        - 'new'
condition: all of selection_*

False positives (as the rule lists them)

  • The creation of a new Federated domain is not necessarily malicious, however these events need to be followed closely, as it may indicate federated credential abuse or backdoor via federated identities at a similar or different cloud provider.

Tags

  • attack.privilege-escalation
  • attack.defense-impairment
  • attack.t1484.002

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/audit/microsoft365_new_federated_domain_added_audit.yml

Sources and licences

  • SigmaHQ

    "New Federated Domain Added" by Splunk Threat Research Team (original rule), Harjot Singh @cyb3rjy0t (sigma rule) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/cloud/m365/audit/microsoft365_new_federated_domain_added_audit.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: New Federated Domain Added",
entity page, dataset version ref-87567c794e4d, updated 2023-09-18T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/58f88172-a73d-442b-94c9-95eaed3cbb36 (accessed 2026-11-03).
Underlying source: SigmaHQ rule 58f88172-a73d-442b-94c9-95eaed3cbb36, 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.