Metasploit smartly stores your creds in its internal database, whether you've manually entered them by using a previous module or whether you've dumped them with smart_hashdump. You can view stored creds with creds.
I've searched, but without result, if there is a way to "plug" stored creds into a module. For example, when using psexec exploit, is there a way I can tell metasploit to use a set of domain/login/hash from the creds DB?
Something like "set creds admin", where admin is the username associated with stored creds.