DroidKungFu uses an AES-encrypted Rage Against The Cage file to exploit the adb resource exhaustion bug. The payload impersonates the Google Search app, while setting up a backdoor that connects to a C&C server to await further instructions. Some samples of the malware have been known to contact up to three C&Cs (command and control) servers. Android malware is something we`ve seen spreading and evolving for the past couple of years as smartphones became an essential part of our lives.”]
Source: https://www.bitdefender.com/blog/hotforsecurity/an-android-malware-analysis-droidkungfu/