Miscreants have created a Trojaned version of a Windows mobile game that makes expensive international phone calls from compromised smartphones.
Pirated versions of 3D Anti-terrorist action, a first-person shooter developed by Beijing Huike Technology in China, and uploaded onto several Windows Mobile freeware download sites, come with a nasty add-on courtesy of Russian virus writers. Compromised phones start attempting to silently make expensive international calls without user involvement, as reported in XDA-Developers’ forum, featuring the experience of a UK victim of the Trojan.
Analysis of the malware by Finnish security firm F-Secure reveals that the malicious code initiates several phone calls to international premium-rate numbers. Presumably VXers receive a percentage of the resulting revenue.
In any case, F-Secure Mobile Security has been updated to detect and block Trojanized versions of this game. Other anti-virus firms can be expected to follow, though the best defence is not to download copies of the game in the first place, of course.
Using illicit copies of mobile games to trick users into downloading malware has happened before, albeit infrequently, and is far from restricted to Windows mobile devices. F-Secure compares the latest Trojan mobile game to a game called Mosquitos from six years back that bit users of Symbian smartphones by sending premium-rate SMS messages.
Credit: The Register
More on CyberInsecure: