Mscashis a Microsoft hashing algorithm that is used for storing cached domain credentials locally on a system after a successful logon. It's worth noting that cached credentials do not expire. Domain credentials are cached on a local system so that domain members can logon to the machine even if the DC is down. It's worth noting that mscash hash is not passable - i.e PTH attacks will not work.
NL$1..10are the cached hashes for 10 previously logged users: