The source code for the Carberp Trojan, which typically sells for $40,000 on the underground, has been leaked and is now available to anyone who wants it. The leak has echoes of the release of the Zeus crimeware source code a couple of years ago. Security researchers are concerned that it may lead to a similar crop of new Trojans and crimeware kits. The code is a powerful crimeware kit designed to give attackers the ability to steal large amounts of sensitive data from infected PCs.
Source: https://threatpost.com/carberp-source-code-leaked/101070/