Netres is a worm on Microsoft Windows that drops a few of its own files across the computer with Russian file names, and then attempts to spread to locally networked PCs. It then moves the contents of C:\WINDOWS\SYSTEM to a new folder called C:\WINDOWS\RESTOP. This leads to Windows being unbootable, and even attempting to move the files back results in memory errors and many other irritating messages. Quite a pain to remove and fix.