Remove W32.Welchia.B.Worm

What is W32.Welchia.B.Worm and removal instructions

W32.Welchia.B.Worm is a variant of W32.Welchia.Worm. If the version of the operating system of the infected computer is Chinese (Simplified), Chinese (Traditional), Korean, or English, the worm will attempt to download the Microsoft Workstation Service Buffer Overrun and Microsoft Messenger Service Buffer Overrun patches from the Microsoft?Windows Update Web site, install it, and then restart the computer.
Also attempts to remove the W32.Mydoom worm.

W32.Welchia.B.Worm manual removal: