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RTT· red team

RTT · red team

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Techniques›AD Misconfigurations›PrivExchange

AD Misconfigurations

PrivExchange

T1187 · MITRE ATT&CK

PrivExchange is an Exchange Web Services (EWS) push-subscription and NTLM-relay privilege-escalation chain. A mailbox-enabled principal permitted to use EWS subscriptions can cause Exchange to authenticate as its computer account to a callback endpoint; if relay defenses are absent and that account retains effective high-impact Active Directory permissions, the relayed identity may be able to grant a controlled account DCSync rights. This outcome depends on the installed Exchange remediation, EWS Extended Protection, LDAP signing/channel binding, and current directory ACLs. PrivExchange is distinct from the ProxyLogon and ProxyShell vulnerability chains, and the procedure does not guarantee Domain Admin access.

ArtifactsRESTRICTED_ACCESS_BLUR_MARKER

EDR HooksRESTRICTED_ACCESS_BLUR_MARKER

Steps1

CategoryNTLM/Kerberos Relaying

Discuss in Advisor

Walkthrough

Step 1

RESTRICTED_ACCESS_BLUR_MARKER

RESTRICTED_ACCESS_BLUR_MARKER

Requirements: ANY(RESTRICTED_ACCESS_BLUR_MARKER)

Variant:

Full outcome coverage

dsacls · Query Object DACL Permissions

Query Object DACL Permissions

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_MARKERdependencies: RESTRICTED_ACCESS_BLUR_MARKERverification: RESTRICTED_ACCESS_BLUR_MARKERfailure modes: 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