SecurityWeek – (International) Building Android malware is trivial with available tools. Because of readily available tools that enable even a novice - 18 - developer to create malicious mobile applications, users should be cautious when downloading and installing mobile apps, especially from non-official App Stores. Developing Android malware to harvest information is a trivial task and possible using readily available tools, a security architect and director at Kindsight Security Labs told SecurityWeek. He demonstrated how to inject snippets of code into a legitimate Android application that infected a mobile device with malware. The malware, when executed, connected with a remote command-and-control center and transmitted data from the device.
Source: http://www.securityweek.com/building-android-malware-trivial-available-tools