Chapcrack is a tool for parsing MS-CHAPv2 handshakes, which can then be submitted to CloudCracker for cracking.
You can download it from the following link: https://packetstormsecurity.com/files/download/115057/moxie0-chapcrack.zip
Source: https://packetstormsecurity.com/files/115057/Chapcrack-MS-CHAPv2-Handshake-Parser.html