The information-stealing RETADUP worm that affected Israeli hospitals is actually just part of an attack that turned out to be bigger than we first thought—at least in terms of impact. It was accompanied by an even more dangerous threat: an Android malware that can take over the device.

https://blog.trendmicro.com/trendlabs-security-intelligence/android-backdoor-ghostctrl-can-silently-record-your-audio-video-and-more/