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RTT· red team

RTT · red team

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Techniques›Credentials & User Impersonation›Family Refresh Token Abuse

Credentials & User Impersonation

Family Refresh Token Abuse

T1528 · MITRE ATT&CK

Certain Microsoft first-party public clients belong to a Family of Client IDs (FOCI) and can issue family refresh tokens (FRTs). An FRT obtained through an authorized device-code flow or from an exposed token cache may be redeemable for an access token under another confirmed family client, using that target client's available delegated permissions. This undocumented behavior can exceed the permissions of the original client application but does not elevate the user's directory privileges. The known FOCI client set is non-exhaustive and may change.

ArtifactsRESTRICTED_ACCESS_BLUR_MARKER

Steps1

CategoryOAuth Abuse

SourceExternal

Discuss in Advisor

Walkthrough

Step 1

RESTRICTED_ACCESS_BLUR_MARKER

RESTRICTED_ACCESS_BLUR_MARKER

Requirements: ALL(RESTRICTED_ACCESS_BLUR_MARKER)

Check before starting: RESTRICTED_ACCESS_BLUR_MARKER

Variant:

Full outcome coverage

ADFSpoof · Generate Office 365 SAML token

Generate Office 365 SAML token

powershell

RESTRICTED_ACCESS_BLUR_MARKER

Version: RESTRICTED_ACCESS_BLUR_MARKER. Requirements: ALL(RESTRICTED_ACCESS_BLUR_MARKER)Documents all requested outcomes. This is a candidate, not proof of execution or compatibility.

RESTRICTED_ACCESS_BLUR_MARKER

Detection signal

Detection 01

RESTRICTED_ACCESS_BLUR_MARKER

Mitigations

Mitigation 01

RESTRICTED_ACCESS_BLUR_MARKER

OPSEC notes

RESTRICTED_ACCESS_BLUR_MARKER

References

Extended details

RESTRICTED_ACCESS_BLUR_MARKER