Ransomware that installs without any kind of user interaction is a malware-makers holy grail. A new Android ransomware named Dogspectus was automatically downloaded onto a test device running Android 4.2.2. The infection then locks the device, prevents any other apps from launching and sets itself to boot first. The malware doesnt actually encrypt files, meaning it may be possible to recover them by connecting the device to a computer and accessing both internal memory and attached storage.”]
Source: https://securityintelligence.com/news/infection-minus-interaction-new-android-ransomware-delivers/