Problems with Task Manager and Regedit

[Guest]

My son's computer was infected with the backdoor.sdbot virus yesterday. We
removed the virus and every is showing clean now, however we are not able to
access the task manager with control-alt-delete or by right clicking on the
bar. The task manager window appears for a second or two and then
disappears. The same happens when trying to run regedit. We can't figure
out what is going on or how to fix it. The information on backdoor.sdbot
didn't indicate that this was a problem that was associated with it. Anyone
know what could be going on?

Thanks!

 

[Taurarian]

http://windowsxp.mvps.org/ToolsQuit.htm
Why does Task Manager, MSCONFIG, or REGEDIT disappear while opening?

http://www.dougknox.com/xp/utils/xp_emerutils.htm
Creates usable copies of REGEDIT, MSCONFIG and Task Manager

You could be infected with one of these worms:

W32.Spybot.Worm
http://securityresponse.symantec.com/avcenter/venc/data/w32.spybot.worm.html
W32.Klez.Worm
http://securityresponse.symantec.com/avcenter/venc/data/[email protected]
W32.Yaha.Worm
http://securityresponse.symantec.com/avcenter/venc/data/[email protected]

These viruses terminate Regedit.exe and taskmgr.exe
W32.HLLW.Kefy:
http://securityresponse.symantec.com/avcenter/venc/data/w32.hllw.kefy.html
W32.HLLW.Cydog@mm:
http://securityresponse.symantec.com/avcenter/venc/data/[email protected]
Backdoor.IRC.Yoink.A:
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.irc.yoink.a.html
Backdoor.Volac.dr:
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.volac.dr.html
W32.Kwbot.R.Worm:
http://www.symantec.com/avcenter/venc/data/w32.kwbot.r.worm.html

These viruses delete the Regedit.exe, Regedt32.exe, Msconfig.exe, Taskmgr.exe
W32.Petch.B:
http://www.symantec.com/avcenter/venc/data/w32.petch.b.html
W32.HLLW.Maax.B@mm:
http://securityresponse.symantec.com/avcenter/venc/data/[email protected]