Botnet
MysteryBot
MysteryBot is an Android banking Trojan with overlay capabilities with support for Android 7/8 but also provides other features such as key logging and ransomware functionality.
MysteryBot is a Android botnet.
Background
MysteryBot is an Android banking Trojan featuring overlay attacks that work on Android 7/8, and it rounds out its arsenal with extras like keylogging and ransomware functionality.
Source: Malpedia (Fraunhofer FKIE).