Symantec Security Response: W32.Welchia.Worm
Details and removal instructions for the worm that attempts to remove the worm W32.Blaster.Worm. Also known as Nachi.
securityresponse.symantec.com/avcenter/venc/data/w32.welchia.worm.html
Trend Micro Virus Encyclopedia: WORM_MSBLAST.D
Description and solution for the worm, also known as Welchia, that ironically is designed to patch systems against the RPC DCOM buffer overflow.
www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=WORM_MSBLAST.D
F-Secure Computer Virus Information Pages: Welchi
Details about the virus also known as Nachi, that tries to disinfect Lovsan.A from the machine and apply the Microsoft patch to close the RPC hole.
www.f-secure.com/v-descs/welchi.shtml