ESCAPING THE CONFINES OF PORT 445

Summary from the TLDR InfoSec newsletter

Attackers are restricted to using port 445 when performing NTLM relay attacks on SMB in Active Directory environments. A common strategy to get around this limitation is by extracting the SAM and SYSTEM registry hives to dump NT hashes, but this often triggers alerts or is blocked by EDR. This article details a technique that uses Service Control Manager (SCM) to start the Webclient service, which offers more lateral movement options.