NvCpl.dll worm xp

Anonymous
2011-12-03T00:25:26+00:00

I have a slow running XP machine.  While troubleshooting, I remove all startup items with msconfig by the disable all button and restarted the machine.

Upon a msconfig a checked MvCpl.dll command line was there.  The original on was also there uncheck.  I searched my C-drive for NvCpl.* and received:

   NvCpl     C:\Windows\Help  Help File

  NvCpl.dll  C:\Windows\System32 

  NvCpl       C:\Dell\Drivers\R65699 Help File

  NvCpl.dll   C:\Dell\Drivers\R65699

  NvCpl       C:\Dell\Drivers\R89437   DL_File

  NvCpl        C:\Dell\Drivers\R89437   HL_File

Bounced around on the internet and learned that a rwiz.exe seem to belong to this worm.  It is also in my msconfig startup page.

Any help with removing this Worm would be appreciated.

Avalonfv

Windows for home | Previous Windows versions | Windows update

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Anonymous
2012-01-05T03:06:41+00:00

I just re-read the entire thread. I was struck by two things:

  1. This PC was once on a domain.
  2. This PC had trojans.

I am aware you reconfigured the PC to change it from Domain to Workgroup, but there still might be something in the profile that is searching for something on the domain. I suppose you could create a fresh profile, but I'm not sure I'd waste my time since...

I believe the PC is still compromised. Malware can sometimes be VERY tricky to remove. Sometimes it might APPEAR to be gone, but there will still be a nasty, almost-impossible-to-detect rootkit present (or maybe even a "bootkit" hiding out in the boot sector). The symptoms you describe certainly indicate the presence of malware; the PC might very well be a part of the "botnet" right now.

I recommend that you make sure all the data is backed up and nuke the drive and start from scratch. It's a hassle, but it would probably still be the quickest (and surely be the most effective) way to deal with this mess.

If you had unlimited time and wished to experiment and explore (but I believe you said this PC belongs to a friend), you could search the web for Process Explorer tutorials and start a thread on Bleeping Computer or a similar site to get guided help. But I truly think you'll be better off if you flatten and rebuild.

Good luck and Happy New Year!

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  1. Anonymous
    2012-01-05T22:04:58+00:00

    Second.

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  2. Anonymous
    2012-01-05T21:24:38+00:00

    Take care and good luck!

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  3. Anonymous
    2012-01-05T21:10:18+00:00

    Daavee,

    When I first started this, the idea of flatten and rebuild was the first thing on my mind.  I have learned much trying to work my way through everything.The system does appear to be beyond help.  I want to thank everone that has contributed to this thread.

    I have some updates that I want to complete from the Dell Site.  If that doesn't solve it, I will start with a clean disk and rebuild XP or update to Windows 7.

    This is a wonderful Web Site that provide class help.  I will continue to use it.

    Be well and Happy New Year!!

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  4. Anonymous
    2012-01-04T06:35:31+00:00

    So, Clean Boot does not speed things up significantly...

    A  Clean Boot does take less time on boot up to settled state.  Once all is booted up, starting let's say, Firefox or Internet Explorer, take a lot of time with interrupts staying greater than 80% CPU time

    Is Safe Mode equally problematic?

    Nothing seems to improve in save mode.  It acts the same.

    Is WgaTray.exe still a problem?

    With Process Explorer I have  noticed high percentages with WagTray.  The other two areas of high CPU usage has been interrupts and scvhost.exe.  Do you know of anyway to use Process Explorer to find out which program is scheduling or using the system resouces.

    Thank you for the help.  The Process Explorer is more help than trying to watch the Task Manager process page.  Happy to have found it.

    This post has been corrected

    Avalonfv

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