Remote Control System (RCS) is developed by an Italian company known as Hacking Team. The latest version of the malware works for all phone including Android, iOS, Windows Mobile, Symbian and BlackBerry devices, but best on Android devices, and can also be installed on jailbroken iOS devices. The biggest host in United States with 64 counts of C&C servers, Kazakhstan with 49, Ecuador has 35, UK which hosts 32 control systems and many other countries with a grand total of 326 Command & Control servers.
Source: https://thehackernews.com/2014/06/researchers-uncover-spying-tool-used-by.html