According to security firm Lookout, a Trojan called "Gemini" has been found in multiple games purchased via "third-party Chinese app stores." Apps such as Monkey Jump 2, Sex Positions, President vs. Aliens, City Defense and Baseball Superstars 2010 are affected, though only if purchased from a "third-party Chinese App Store." The original versions of the games from the Google Android Market are clean, according to the security firm.
"Though the intent of this Trojan isn’t entirely clear, the possibilities range from setting up a malicious mobile ad network to creating an Android botnet," the company said.
While infected apps have yet to show up in other regions, Lookout warns that anything is possible:
"..possible infected apps could be posted to app stores targeting US users in the future," Lookout CTO Kevin Mahaffey noted.