OK lets try this to fix it - two programmes to run.
First the hammer and then a look for remnants. This malware has patched two system files that Avast cannot remove due to them being rather vital
Download ComboFix from one of these locations:
Link 1
Link 2
* IMPORTANT !!! Save ComboFix.exe to your Desktop
[*]Disable your AntiVirus and AntiSpyware applications, usually via a right click on the System Tray icon. They may otherwise interfere with our tools
[*]Double click on ComboFix.exe & follow the prompts.
[*]As part of it’s process, ComboFix will check to see if the Microsoft Windows Recovery Console is installed. With malware infections being as they are today, it’s strongly recommended to have this pre-installed on your machine before doing any malware removal. It will allow you to boot up into a special recovery/repair mode that will allow us to more easily help you should your computer have a problem after an attempted removal of malware.
[*]Follow the prompts to allow ComboFix to download and install the Microsoft Windows Recovery Console, and when prompted, agree to the End-User License Agreement to install the Microsoft Windows Recovery Console.
**Please note: If the Microsoft Windows Recovery Console is already installed, ComboFix will continue it’s malware removal procedures.
http://img.photobucket.com/albums/v706/ried7/RcAuto1.gif
Once the Microsoft Windows Recovery Console is installed using ComboFix, you should see the following message:
http://img.photobucket.com/albums/v706/ried7/whatnext.png
Click on Yes, to continue scanning for malware.
When finished, it shall produce a log for you. Please include the C:\ComboFix.txt in your next reply.
THEN
http://www.geekstogo.com/misc/guide_icons/OTLI.gif
OTL - Download or alternative link here and here to your desktop
[*]Double click on the icon to run it. Make sure all other windows are closed and to let it run uninterrupted.
[*]Select All Users
[*]Under the Custom Scan box paste this in
netsvcs
%SYSTEMDRIVE%*.*
%systemroot%\Fonts*.com
%systemroot%\Fonts*.dll
%systemroot%\Fonts*.ini
%systemroot%\Fonts*.ini2
%systemroot%\Fonts*.exe
%systemroot%\system32\spool\prtprocs\w32x86*.*
%systemroot%\REPAIR*.bak1
%systemroot%\REPAIR*.ini
%systemroot%\system32*.jpg
%systemroot%*.jpg
%systemroot%*.png
%systemroot%*.scr
%systemroot%*._sy
%APPDATA%\Adobe\Update*.*
%ALLUSERSPROFILE%\Favorites*.*
%APPDATA%\Microsoft*.*
%PROGRAMFILES%*.*
%APPDATA%\Update*.*
%systemroot%*. /mp /s
CREATERESTOREPOINT
%systemroot%\System32\config*.sav
%PROGRAMFILES%\bak. /s
%systemroot%\system32\bak. /s
%ALLUSERSPROFILE%\Start Menu*.lnk /x
%systemroot%\system32\config\systemprofile*.dat /x
%systemroot%*.config
%systemroot%\system32*.db
%PROGRAMFILES%\Internet Explorer*.dat
%APPDATA%\Microsoft\Internet Explorer\Quick Launch*.lnk /x
%USERPROFILE%\Desktop*.exe
%PROGRAMFILES%\Common Files*.*
%systemroot%*.src
%systemroot%\install*.*
%systemroot%\system32\DLL*.*
%systemroot%\system32\HelpFiles*.*
%systemroot%\system32\rundll*.*
%systemroot%\winn32*.*
%systemroot%\Java*.*
%systemroot%\system32\test*.*
%systemroot%\system32\Rundll32*.*
/md5start
explorer.exe
winlogon.exe
/md5stop
HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\WindowsUpdate\AU
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\Results\Install|LastSuccessTime /rs
[*]Click the Quick 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) the contents of these files, one at a time, and post them if you need to start a new topic.