raman
2
It is an Afcore Variant, i d o not know why Avast did not find it, because they have a sample of this Malware. Maybe it is not ITW, but it is definitly not ZOO. You can easily remove it by typing:
rundll32 C:\WINDOWS\System32\ivbxxbi.dll,uninstall in a Dosbox. Than disable the Startups via msconfig or Hijackthis and make a restart.
Use the Avast cleaner http://www.avast.com/i_idt_171.html to get rid of the Bugbear Worm. Where does Avast report the Bugbear(file/folder)?