Since the tester has compromised a Windows machine and bypassed security, the best next step is to extract credentials from memory to move laterally within Active Directory.
* Option A (Mimikatz) #: Correct.
* Mimikatz extracts hashed credentials, plaintext passwords, and Kerberos tickets from memory.
* Attackers use Pass-the-Hash (PtH) or Pass-the-Ticket (PtT) to authenticate on other systems without cracking passwords.
* Option B (Hashcat) #: Cracking passwords takes time and is not necessary if Mimikatz provides reusable credentials.
* Option C (Evil-WinRM) #: Evil-WinRM is useful for remotely executing commands, but without valid credentials, it won't work.
* Option D (Metasploit) #: Metasploit payloads may be useful for initial exploitation, but credential dumping is a better next step.
# Reference: CompTIA PenTest+ PT0-003 Official Guide - Credential Dumping & Lateral Movement