To answer your direct question: Yes, the hash that you are observing can be extracted and possibly cracked (Based on the complexity of the password, the amount of power your putting into cracking it, etc.). The majority of the time, the hash will be either an NTLMv1 or v2, and you will see the occasional kerberos. There are a few tools out there, like HashIdentifier, that will help you in identifying the type of hash which you extracted.
Note: Passing-the-hash techniques may be unavailable for you as the newer NTLM hashes cannot be passed, and you will need to rely on cracking it rather than passing it.