Sigma rule: Device Registration or Join Without MFA

Rule

Title

Device Registration or Join Without MFA

Status

test

Level

medium

Author

Michael Epping, '@mepples21'

Date

2022-06-28

File

rules/cloud/azure/signin_logs/azure_ad_device_registration_or_join_without_mfa.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Monitor and alert for device registration or join events where MFA was not performed.

Log source

product

azure

service

signinlogs

Detection

selection:
    ResourceDisplayName: 'Device Registration Service'
    conditionalAccessStatus: 'success'
filter_mfa:
    AuthenticationRequirement: 'multiFactorAuthentication'
condition: selection and not filter_mfa

False positives (as the rule lists them)

• Unknown

Tags

• attack.privilege-escalation
• attack.persistence
• attack.initial-access
• attack.stealth
• attack.t1078.004

MITRE ATT&CK ids this rule names

• T1078.004

References

• https://learn.microsoft.com/en-us/entra/architecture/security-operations-devices#device-registrations-and-joins-outside-policy

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/azure/signin_logs/azure_ad_device_registration_or_join_without_mfa.yml