InfoJack - New Windows Mobile Trojan

InfoJack - New Windows Mobile Trojan. McAfee, a popular security firm has warned that they've discovered a new Windows Mobile trojan. This time, the trojan, InfoJack Trojan, is actually in the wild and capable of infecting unprotected Windows Mobile smartphones.

The InfoJack Trojan spreads by either tricking mobile users into installing seemingly legitimate application installation files or if punters inadvertently use an infected memory card on vulnerable devices. The malware has been spotted circulating in China.

InfoJack disables Windows Mobile application installation security. It sends the infected device's serial number, operating system, and other information to the author of the Trojan (a factor that explains the name of the malware). Infected devices are left vulnerable to the injection of further malware strains by allowing unsigned applications to be installed without a warning.

Once infected, the homepage on a device's browser is changed. The malware contains a number of features designed to frustrate clean-up efforts by copying itself back onto disk to protect itself from deletion.

InfoJack Trojan has been circulated through Chinese downloads of Google Maps, applications for stock trading, and games. The website that originated the InfoJack Trojan has been shut down, thanks to Chinese authorities, but that doesn't mean Windows Mobile users are in the clear.

Now might be a good time to start thinking about anti-virus applications for your Windows Mobile device.