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HighSigmaHQ Mark Morowczynski '@markmorow' +2

Primary Refresh Token Access Attempt

Indicates access attempt to the PRT resource which can be used to move laterally into an organization or perform credential theft

Detection logic

Detection requirements

Platform: Containers IaaS Identity Provider Office Suite SaaS
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: azure
Log source service: riskdetection

Known benign triggers

This detection is low-volume and is seen infrequently in most organizations. When this detection appears it's high risk, and users should be remediated.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
learn.microsoft.com/en-us/entra/architecture/security-operations-user-accounts#unusual-sign-ins	Product documentation	19
learn.microsoft.com/en-us/entra/id-protection/concept-identity-protection-risks#possible-attempt-to-access-primary-refresh-token-prt	Product documentation	22from 2 sources

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