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RTT· red team

RTT · red team

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Techniques›AD Misconfigurations›AD CS ESC11: NTLM Relay to RPC Enrollment

AD Misconfigurations

AD CS ESC11: NTLM Relay to RPC Enrollment

T1649 · MITRE ATT&CK

ESC11 occurs when an Active Directory Certificate Services CA's MS-ICPR RPC enrollment interface does not require packet privacy. If an authorized test can relay an NTLM authentication to that interface, and the relayed principal may enroll in a suitable certificate template, the CA may issue an authentication certificate for that principal. The CA's IF_ENFORCEENCRYPTICERTREQUEST flag enables RPC packet privacy and prevents this relay; Microsoft documents the flag as enabled by default. Certificate issuance does not itself produce an NTLM hash or guarantee later Kerberos authentication: acceptance depends on the certificate's identity, EKU, strong SID mapping, and current KDC policy.

ArtifactsRESTRICTED_ACCESS_BLUR_MARKER

Steps1

CategoryAD Certificate Abuse

Discuss in Advisor

Walkthrough

Step 1

RESTRICTED_ACCESS_BLUR_MARKER

RESTRICTED_ACCESS_BLUR_MARKER

Requirements: ALL(RESTRICTED_ACCESS_BLUR_MARKER)

Variant:

Full outcome coverage

ForgeCert · Create an authorized lab authentication certificate

Create an authorized lab authentication certificate

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.preconditions: RESTRICTED_ACCESS_BLUR_MARKERverification: RESTRICTED_ACCESS_BLUR_MARKERlimitations: RESTRICTED_ACCESS_BLUR_MARKER

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