Remove UnVirex (Uninstall Guide)

Posted by Grinler on June 2, 2009 @ 09:44 PM · Views: 1,303

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What this programs does:

UnVirex is a rogue anti-virus program that purposely displays false or exaggerated scan results stating that your computer is infected. The program shows these results in order to try and convince you that you are infected so that you purchase the UnVirex program. When installed, UnVirex will be configured to automatically scan your computer when you login to Windows. It will then repeatedly prompt you to purchase a license of UnVirex in order to remove these so-called infections.

UnVirex Scan results screen
For more screen shots of this infection click on the image above.
There are a total of 4 images you can view.

As part of the installation, a Layered Service Provider, or LSP, DLL is also installed onto your computer. Due to this you need to use extreme caution when trying to remove this program from your computer as if you just delete the program's files and folders, it will cause your networking and Internet access to stop functioning. Instead, use the removal guide presented below to remove UnVirex from your computer as it properly removes the LSP without causing a loss of functionality on your computer.

Threat Classification:

• Information on Rogue Programs & Scareware

Advanced information:

View UnVirex files.
View UnVirex Registry Information.

Entries for this program found in the Add or Remove Programs control panel:

UnVirex

Tools Needed for this fix:

• Malwarebytes' Anti-Malware

Symptoms that may be in a HijackThis Log:

O2 - BHO: StatusBarPane - {CCB5551D-8594-4999-85F9-1E3EABCB95AC} - C:\Program Files\UnVirex\IEAddon.dll
O4 - HKLM\..\Run: [UnVirex] C:\Program Files\UnVirex\UnVirex.exe
O10 - Unknown file in Winsock LSP: c:\program files\unvirex\siglsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\unvirex\siglsp.dll

Guide Updates:

06/02/09 - Initial guide creation.

Automated Removal Instructions for UnVirex using Malwarebytes' Anti-Malware:

1. Print out these instructions as we will need to close every window that is open later in the fix.
   
   
2. Download Malwarebytes' Anti-Malware, or MBAM, from the following location and save it to your desktop:
   
   Malwarebytes' Anti-Malware Download Link
   
   


3. Once downloaded, close all programs and Windows on your computer, including this one.
   
   
4. Double-click on the icon on your desktop named mbam-setup.exe. This will start the installation of MBAM onto your computer.
   
   
5. When the installation begins, keep following the prompts in order to continue with the installation process. Do not make any changes to default settings and when the program has finished installing, make sure you leave both the Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware checked. Then click on the Finish button.
   
   
6. MBAM will now automatically start and you will see a message stating that you should update the program before performing a scan. As MBAM will automatically update itself after the install, you can press the OK button to close that box and you will now be at the main program as shown below.
   
   
   
   
   
   
   
7. On the Scanner tab, make sure the the Perform quick scan option is selected and then click on the Scan button to start scanning your computer for UnVirex related files.
   
   
8. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you go and do something else and periodically check on the status of the scan. When MBAM is scanning it will look like the image below.
   
   
   
   
   
   
   
9. When the scan is finished a message box will appear as shown in the image below.
   
   
   
   
   
   
   You should click on the OK button to close the message box and continue with the UnVirex removal process.
   
   
10. You will now be back at the main Scanner screen. At this point you should click on the Show Results button.
    
    
11. A screen displaying all the malware that the program found will be shown as seen in the image below. Please note that the infections found may be different than what is shown in the image.
    
    
    
    
    
    
    
    You should now click on the Remove Selected button to remove all the listed malware. MBAM will now delete all of the files and registry keys and add them to the programs quarantine. When removing the files, MBAM may require a reboot in order to remove some of them. If it displays a message stating that it needs to reboot, please allow it to do so. Once your computer has rebooted, and you are logged in, please continue with the rest of the steps.
    
    
12. When MBAM has finished removing the malware, it will open the scan log and display it in Notepad. Review the log as desired, and then close the Notepad window.
    
    
13. You can now exit the MBAM program.
    

Your computer should now be free of the UnVirex program. If your current anti-virus solution let this infection through, you may want to consider purchasing the PRO version of Malwarebytes' Anti-Malware to protect against these types of threats in the future.

If you are still having problems with your computer after completing these instructions, then please follow the steps outlined in the topic linked below:

Preparation Guide For Use Before Posting A Hijackthis Log

Associated UnVirex Files:

c:\Documents and Settings\All Users\Start Menu\Programs\UnVirex
c:\Documents and Settings\All Users\Start Menu\Programs\UnVirex.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\How to Register UnVirex.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\Register UnVirex.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\UnVirex\UnVirex.lnk
%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\UnVirex.lnk
c:\Documents and Settings\All Users\Desktop\UnVirex.lnk
c:\Program Files\UnVirex
c:\Program Files\UnVirex\daily.cvd
c:\Program Files\UnVirex\Drvfltip.sys
c:\Program Files\UnVirex\hjengine.dll
c:\Program Files\UnVirex\IEAddon.dll
c:\Program Files\UnVirex\main.cvd
c:\Program Files\UnVirex\MFC71.dll
c:\Program Files\UnVirex\MFC71ENU.DLL
c:\Program Files\UnVirex\msvcp71.dll
c:\Program Files\UnVirex\msvcr71.dll
c:\Program Files\UnVirex\pthreadVC2.dll
c:\Program Files\UnVirex\shellext.dll
c:\Program Files\UnVirex\siglsp.dll
c:\Program Files\UnVirex\uninstall.exe
c:\Program Files\UnVirex\UnVirex.exe

Associated UnVirex Windows Registry Information:

HKEY_CLASSES_ROOT\AppID\{C0E56AC2-9F72-436E-B6E7-AEC28AF9E4EB}
HKEY_CLASSES_ROOT\AppID\IEAddon.DLL
HKEY_CLASSES_ROOT\CLSID\{08EEC6AD-7486-487F-89B7-5A3716DDAE14}
HKEY_CLASSES_ROOT\CLSID\{CCB5551D-8594-4999-85F9-1E3EABCB95AC}
HKEY_CLASSES_ROOT\Drive\shellex\ContextMenuHandlers\unvirex_contextscan
HKEY_CLASSES_ROOT\Drives\shellex\ContextMenuHandlers\unvirex_contextscan
HKEY_CLASSES_ROOT\Folder\shellex\ContextMenuHandlers\unvirex_contextscan
HKEY_CLASSES_ROOT\IEAddon.StatusBarPane
HKEY_CLASSES_ROOT\IEAddon.StatusBarPane.1
HKEY_CLASSES_ROOT\Interface\{5B184B9D-B7BD-4FEA-8D1F-5E27182206A5}
HKEY_CLASSES_ROOT\TypeLib\{3ED0E410-5C8E-47B6-A75D-D10B886E903C}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CCB5551D-8594-4999-85F9-1E3EABCB95AC}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\UnVirex
HKEY_LOCAL_MACHINE\SOFTWARE\UnVirex
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\DrvFltIp
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform "UnVirex"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "UnVirex"