Security Response has discovered a threat that is being talked about among some members of certain discussion groups in Japan. The threat, named Infostealer.Kenzero, teaches yet another lesson to those using file-sharing networks not to download illegal games. Infostealer.Kenzero primarily arrives in the guise of setup.exe, which in this case is a fake installation file for Japanese pornographic games that are circulating around the file-sharing network “Share.” Several pornographic games have been reported to include this malicious setup.exe file.
Once the setup.exe file is executed it attempts to download image files (.bmp) from a predetermined website. Using these images, the threat brings up a form that asks the user to enter personal information, including his or her full name, password for the game, email address, postal...