IBM experts at the IBM X-Force threat intelligence have discovered that the source code for Android malware GM Bot was leaked online. The source code was leaked in December 2015, it include the bot component and the control panel. Once the code is leaked online, cyber criminal organizations can work on it to create new variants that could be offered for sale or rent. The original creator of the Android malware has sold the rights to distribute GM Bot v1 (aka MazarBot) to other cyber criminals that is offering it for $500.”]
Source: http://securityaffairs.co/wordpress/44670/cyber-crime/gm-bot-code-leaked-online.html