Malware
Keenadu
Keenadu is an Android backdoor that is distributed primarily through pre-infected device firmware, as well as through malicious apps.
Keenadu is a Android malware family.
Background
Keenadu is an Android backdoor spread mainly via firmware that ships already infected, and also through malicious apps. It is capable of taking complete remote control of a victim's device, committing ad fraud, and hijacking browser searches.
Source: Malpedia (Fraunhofer FKIE).