Another usb-media infection

Most malware that spreads to removable media exploits the Windows autorun functionality: Windows checks any drive to see if it has a file named autorun.inf in the root directory. If it does, Windows checks the contents of the file and take appropriate action. In most cases the file contains a command saying that a file should be automatically run. It will do this automatically for any local hard drive and the same goes for cd-roms.

Read the article HERE.