The source is C++ and supposedly contains everything. The seller is asking for 5500 WebMoney/LibertyReserve for the full source code of ZeuS version 2.0.8.9.9. The source code has been leaked but the archive is password-protected. In addition, someone has even given out an MD5 hash of the password. Dunno if it’s legit but it’s certainly making this an interesting race to see who can crack the password-cracker.
Source: https://thehackernews.com/2011/04/zeus-source-code-leaked-available-for.html