Win32.Worm.Hakaglan.B makes a copy of itself inside the system32 folder in the Windows OS. It disables the Task Manager, registry tools and folder options by altering the registry values of the Windows OS.This Trojan spreads around via Yahoo Messenger, removable media and shared networks. The Trojan usually increases its footprint by making itself look like a link for users to download something. Strange desktop backgrounds and unwanted desktop icons are some of the symptoms of the Trojan having infected the system. The computer can take as long as 10 minutes to start after being rebooted when infected by this Trojan. It keeps track of websites and site preferences of users on the system and shares that information with remote computers.