Landing in the No. 8 spot at 3 percent, the KungFu malware family is found embedded in applications and attempts to gain root access of the victim's device, according to Trend Micro. It was detected in 2011. Security researchers said the malware appears to have backdoor functionality that enables an attacker to install a malicious Android package, run programs or navigate to a specific website. It steals data about the device as well as all information stored in its memory.