Anti-virus solutions firm Bitdefender has warned Internet users against Mousetrap Trojan that steals money in chain reactions.

The new bank-robber Trojan sets off a series of downloads and installations to rob your bank account while dodging antivirus software. This is akin to mafia that avoids the cops by launching heists through an intricate chain of command.

The Mousetrap campaign starts as Java applets injected in popular Web sites infect visitors. The malicious applet pretends to clean html files to ensure its execution along with the opening of the piggybacked html page.

Once executed, the applet downloads and installs another malicious executable file on the machine of the Web site visitors.