I had something similar this morning and the register thing helped me. It's basically a fake Antivirus that keeps spamming you with false threats. At least that's what I had, I didn't have the no task bar or such, but I did have the disabled task manager and system restore, etc.
I read theres a way to fix the log off issue as well (I didn't have it myself) also with registries.
http://www.symantec.com/connect/forums/wormwin32netsky
This topic is what helped me out.
Some tips from the topic:
Re-enabling task bar:
Goto Run –> Copy & paste the below code:
This will enable the taskbar...
REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 0 /f
to fix the logoff issue
restore your registry
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\
UserInit = c:\windows\system32\winlogon86.exe
back to:
UserInit = c:\windows\system32\userinit.exe
Offline NT Password and Registry Editor can be used http://pogostick.net/~pnh/ntpasswd/
However, if you are already in the loop and can't get to the registry to make the change, here is something I found in another forum that helped me:
Put in your Windows Disc and boot into Repair, you will see a dos mode, press “1″ go into “C:\Windows” directory and type in your user/admin password.
after that go into your “System32″ folder by typing “cd System32″ without “quotes”
then enter in:
“copy winlogon.exe winlogon86.exe” and
“copy winlogon.exe winupdate86.exe” <— just incase
type: "exit" to restart
Use malwarebytes
But, in the end, after you are able to kill the winsetup86.exe process, make sure and run malwarebytes AND update to Win XP SP3. I had to both to keep the problems from coming back.
Edit:
After fixing the log off issue and such you'll want to make sure the thing is completely gone.
Remove the following if your Spybot or antivirus didn't remove them.
%Program Files%\InternetSecurity2010
%Program Files%\InternetSecurity2010\IS2010.exe
%WINDOWS%\system32\41.exe
%WINDOWS%\system32\winhelper86.dll
%WINDOWS%\system32\winlogon86.exe
%WINDOWS%\system32\winupdate86.exe
%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Internet Security 2010.lnk
%UserProfile%\Desktop\Internet Security 2010.lnk
%UserProfile%\Start Menu\Internet Security 2010.lnk
The registry entries that need to be removed are as follows:
HKEY_CURRENT_USER\Software\IS2010
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “Internet Security 2010
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run “winupdate86.exe”