cdrom.sys file got deleted!!!

For a day or so, Symantec AntiVirus has been constantly sending me a notification about HacktoolRootkit!inf. I tried to clean it, but it wouldn't work. I started to try and figure out the problem. I found out that the infected file was cdrom.sys, which was in C:\WINDOWS\system32\drivers\ i think. haha. So, my dad told me to use Malwarebyte's Anti-Malware. I performed a full scan, and it found cdrom.sys, the infected file, along with some other files. I removed all of the threats and restarted my computer. When I restarted, I went to load The Sims 3 World Adventures, which I just bought today, to see if I could play it without those irritating interruptions from Symantec. It said that it couldn't find the CD, and that there was a "Disc Authentication Error," which made me very upset, because I realized that something must have gone wrong with cdrom.sys. So, I went back into Malwarebyte's and opened the quarantine and restored the item that had cdrom.sys in it, along with some other items just in case. I restarted, but the problem was still there! I just went into Windows Explorer and checked the folder where cdrom.sys should be, but I don't see it! How do I get it back?!

http://support.microsoft.com/gp/cd_dvd_drive_problems

Take a read see if it will help

Hi, Welcome to GeekPolice.net!

It sounds like cdrom.sys was infected with TDL3 and it got deleted, it needs to be replaced.

Please download OTL to your Desktop. (If you already have it downloaded, then just follow the instructions below).

• Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
  
• Under the Custom Scan box paste this in
  
  %systemroot%\*. /mp /s
  %systemroot%\system32\*.dll /lockedfiles
  %systemroot%\system32\*.exe /lockedfiles
  %systemroot%\Tasks\*.job /lockedfiles
  %systemroot%\system32\drivers\*.sys /lockedfiles
  %systemroot%\System32\config\*.sav
  %systemroot%\system32\*.sys
  %systemroot%\system32\drivers\*.dll
  %systemroot%\system32\drivers\*.ini
  %systemroot%\system32\drivers\*.exe
  %SYSTEMDRIVE%\*.*
  %PROGRAMFILES%\*.
  %appdata%\*.*
  netsvcs
  msconfig
  safebootminimal
  safebootnetwork
  activex
  drivers32
  /md5start
  eventlog.dll
  scecli.dll
  netlogon.dll
  cngaudit.dll
  sceclt.dll
  ntelogon.dll
  logevent.dll
  iaStor.sys
  nvstor.sys
  atapi.sys
  IdeChnDr.sys
  viasraid.sys
  AGP440.sys
  vaxscsi.sys
  nvatabus.sys
  viamraid.sys
  nvata.sys
  nvgts.sys
  iastorv.sys
  ViPrt.sys
  eNetHook.dll
  ahcix86.sys
  KR10N.sys
  disk.sys
  nvstor32.sys
  ahcix86s.sys
  nvrd32.sys
  symmpi.sys
  adp3132.sys
  mv61xx.sys
  usbstor.sys
  /md5stop
  CREATERESTOREPOINT
  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install|LastSuccessTime /rs
  
  
• Click the Run Scan button. Do not change any settings unless otherwise told to do so. The scan wont take long.
  
  
  
  • When the scan completes, it will open two notepad windows. OTL.Txt and Extras.Txt. These are saved in the same location as OTL.
    
  • Please copy (Edit->Select All, Edit->Copy) and paste (Edit->Paste) the contents of these files, one at a time

Note: in the event that OTL fails to run, please use alternate download links to try again:

http://oldtimer.geekstogo.com/OTL.com
http://oldtimer.geekstogo.com/OTL.scr

Moving to malware removal