The source code for the world’s most notorious banking Trojan, ZeuS, may have been given to a third party who is now reselling it to the highest bidder in the criminal underground. Sources say the source code may have separately sold the code itself, ostensibly to the same individual shown in the screen shot below. The seller only accepts payment via an irreversible virtual currency called Liberty Reserve, which can add considerably to the final price of the item(s) for sale. It is unlikely to be a fake: The seller has been a member of a vetted crime forum since June 13, 2009.”]
Source: https://krebsonsecurity.com/2011/02/zeus-source-code-for-sale-got-100000/