The W32/Protoride family of Windows worms spread via network shares. They also have a backdoor component that allows unauthorised remote access to the computer via IRC channels.
W32/Protori-Fam worms usually attempt to copy themselves to the Windows system folder with the filename rdpty.exe and then set the following registry entry so as to run themselves before all EXE files:
W32/Protori-Fam worms usually attempt to copy themselves to msupdate.exe in the startup folder of shared network computers.
W32/Protori-Fam worms may also set the following registry entry:
W32/Protori-Fam worms remains resident, usually running in the background as a service process and listening for commands from remote users via IRC channels.