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RTT· red team

RTT · red team

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Techniques›Credentials & User Impersonation›Printer Bug

Credentials & User Impersonation

Printer Bug

T1187 · MITRE ATT&CK

The Printer Bug abuses the MS-RPRN RpcRemoteFindFirstPrinterChangeNotificationEx notification path to make a domain-joined Windows target with an accessible Print Spooler initiate authentication to a host named by the caller, typically over SMB. The target commonly authenticates as its machine account. This procedure coerces authentication only; capturing or relaying the resulting NTLM challenge-response is a separate listener/relay action and does not itself execute code or provide a plaintext password or NT hash.

ArtifactsRESTRICTED_ACCESS_BLUR_MARKER

Steps1

CategoryNTLM/Kerberos Relaying

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

Coverage Gap: No catalog tool command currently produces this step's declared outcomes.

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