There is a .dll in my system32 file that seems to keep on remaking itself which means there’s a backdoor program on this system. I’ve tried Kaspersky but the .dll seems to slow my computer down that when I try Kaspersky my laptop doesn’t load up when it comes to the desktop. I’ve tried Ad-Aware, Pest Control, Nod32, and AVG. I’ve also tried to remove it forcefully but it says it’s in use. When I remote it with a cold boot it remakes itself when I restart my computer. I did this in Safe Mode. Any tips on to remove this annoying bugger? I also tried googling the .dll but nothing comes up, here is the dll
vtUlLDst.dll
Is that even a legit system32 dll but infected? If it is would I be able to make a new, clean system32 or is reformating my only option?
Help needed! Thanks in advance.

Best answer:

Answer by Darren Y
To clean up your virus/spyware problems

Update your anti-virus [you should only have one anti-virus running on your PC]

Update your anti-spyware software.

Restart your PC in safe mode

http://www.pchell.com/support/safemode.shtml

And run a full scan with both.

You may also want to have a look at your start up items by by msconfig.

http://www.netsquirrel.com/msconfig/

Be precise with the items you uncheck, you can have a look here to see if they are necessary

http://www.greatis.com/appdata/index.html

You should also have a look at your IE Add-ons.

http://www.microsoft.com/windowsxp/by/web/sp2_addonmanager.mspx

Disable any you do not use.

After you reboot back to normal mode, down load and install ccleaner to fix any registry problems.

http://www.ccleaner.com

Know better? Leave your own answer in the comments!