SpecterOps released "DumpGuard" along with a detailed article on how they were able to bypass Windows Credential Guard in both privileged and unprivileged contexts. I learned a ton about Isolated LSA and friends. Its funny to see that DES-cracking of NTLMv1 challenges is still relevant (and that has supplanted ).
Article:
DumpGuard:

Home - Cracking NetNTLMv1 online
One of the only 99.99% cracking programs for NetNTLMv1 in the world
crack.sh | The World's Fastest DES Cracker

SpecterOps
Catching Credential Guard Off Guard - SpecterOps
Uncovering the protection mechanisms provided by modern Windows security features and identifying new methods for credential dumping.
GitHub
GitHub - bytewreck/DumpGuard: Proof-of-Concept tool for extracting NTLMv1 hashes from sessions on modern Windows systems.
Proof-of-Concept tool for extracting NTLMv1 hashes from sessions on modern Windows systems. - bytewreck/DumpGuard






