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Remove Desktop Defender 2010 (Uninstall Guide)

By on October 28, 2009 @ 12:37 PM | Last Updated: December 2, 2009 | Read 74,477 times.
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Desktop Defender 2010 is a rogue security program from the Contraviro family. When installed this program will be configured to start automatically when Windows starts and will then create fake malware files that will be detected during the program's scans. Desktop Defender 2010 will not, though, remove any files that it states are malware until you first purchase the program. In reality, the scan results from this program are false and Desktop Defender 2010 is not actually finding any infections. Instead it displays the same scan results regardless of the computer that is run on. Therefore, please do not act upon anything that this program states are infections as it is possible you may delete a legitimate program.


Desktop Defender 2010
Desktop Defender 2010
For more screen shots of this infection click on the image above.
There are a total of 5 images you can view.


While Desktop Defender 2010 is running you will also see security alerts appearing on your desktop. These alerts will include messages stating that there is spyware running, that you are at risk for losing data, or that your computer is sending SPAM. An example of one of the alerts you may see is:

You have been infected by a proxy-relay trojan server with new and danger "SpamBots".
You have a computer with a virus that sends spam.
This is a mass-mailing worm with backdoor thus allowing un-authorized access to the infected system.
It spreads by mass-mailing itself to e-mail addresses harvested from the local computer or by querying on-line search engines such as google.com.
The IP address that YOU are getting from Internet Service Provider (ISP) for YOU personal computer is on some major blacklist, like SpamHaus.
Your computer has been used to send a huge amount of junk e-mail messages during the last days.
You IP will be marked in the Police log file as mass-mailing spam assist.
Upgrading to the full version Desktop Defender 2010 it will eliminate the majority of Spam attempts.

This infection has morphed recently to show the above screen right after you login, and if you close it, may cause your computer to reboot. This effectively ransoms your computer so that if you do not purchase it, or use a guide like below to remove the infection, you will not be able to use your computer properly.

If you are infected with Desktop Defender 2010, then please do not purchase the program. If you have already purchased the program, then we suggest you contact your credit card company and dispute the charges while explaining that the program is fraudulent. To remove this infection and any related malware, please use the removal guide below.


Threat Classification:


Advanced information:

View Desktop Defender 2010 files.
View Desktop Defender 2010 Registry Information.


Entries for this program found in the Uninstall Programs control panel:

Desktop Defender 2010


Tools Needed for this fix:


Symptoms that may be in a HijackThis Log:

O2 - BHO: StatusBarPane - {CCB5551D-8594-4999-85F9-1E3EABCB95AC} - C:\Program Files\Desktop Defender 2010\IEAddon.dll
O4 - HKLM\..\Run: [lk<random>] C:\WINDOWS\system32\lk<random>.exe
O4 - HKLM\..\Run: [Desktop Defender 2010] C:\Program Files\Desktop Defender 2010\Desktop Defender 2010.exe
O10 - Unknown file in Winsock LSP: c:\program files\desktop defender 2010\siglsp.dll
O10 - Unknown file in Winsock LSP: c:\program files\desktop defender 2010\siglsp.dll


Guide Updates:

10/28/09 - Initial guide creation.
12/02/09 - Updated for new variant.


Automated Removal Instructions for Desktop Defender 2010 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. Reboot the infected computer, when the computer reboot login if you need to.

  3. You will now be at the ransom screen where Desktop Defender states that your computer is sending out SPAM messages as shown below:

    MalwareBytes Anti-Malware Screen

    You should now press the Ctrl, Alt, and Delete buttons on your computer at the same time. Do this by first pressing the Ctrl key, and holding it down, then the Alt key, and holding it down, and then finally press the the Delete key. So you should have Alt and Ctrl held down at the same time before pressing the Delete button on your keyboard.

  4. The Windows Task Manager should now come up on your screen as shown in the image below.

    MalwareBytes Anti-Malware Screen

    Click on the Processes tab as shown by the blue arrow in the image above.

  5. You will now be at the Processes tab of the Task Manager as shown in the image below.

    MalwareBytes Anti-Malware Screen

    Make sure there is a checkmark in the checkbox labeled Show processes from all users and then look through the list of running processes. When you find the process named Desktop Defender 2010.exe, click once on it to select. Then click on the End Process button to terminate it.

  6. An alert will be displayed asking if you are sure you want to terminate this process. Please click on the Yes button.

  7. The Desktop Defender alert will now be gone and you will be at a blank screen with the Task Manager still open. On the Task Manager, click on the File menu option and then select New Task (Run...).

  8. When the Create New Task box opens, type explorer in the Open: field and then press the OK button. The Windows desktop will now appear and you can close the Task Manager.

  9. Now that you are at your desktop, download Malwarebytes Anti-Malware, or MBAM, from the following location and save it to your desktop:

    Malwarebytes Anti-Malware Download Link (Download page will open in a new window)

  10. Once downloaded, close all programs and Windows on your computer, including this one.

  11. Double-click on the icon on your desktop named mbam-setup.exe. This will start the installation of MBAM onto your computer.

  12. 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.

  13. 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.

    MalwareBytes Anti-Malware Screen

  14. 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 Desktop Defender 2010 related files.

  15. 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.

    MalwareBytes Anti-Malware Scanning Screen

  16. When the scan is finished a message box will appear as shown in the image below.

    MalwareBytes Anti-Malware Scan Finished Screen

    You should click on the OK button to close the message box and continue with the Desktop Defender 2010 removal process.

  17. You will now be back at the main Scanner screen. At this point you should click on the Show Results button.

  18. 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.

    MalwareBytes Scan Results

    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.

  19. 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.

  20. You can now exit the MBAM program.

Your computer should now be free of the Desktop Defender 2010 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 Using Malware Removal Tools and Requesting Help



Associated Desktop Defender 2010 Files:

c:\Documents and Settings\All Users\Desktop\Desktop Defender 2010.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\Desktop Defender 2010
c:\Documents and Settings\All Users\Start Menu\Programs\Desktop Defender 2010.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\Desktop Defender 2010\Activate Desktop Defender 2010.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\Desktop Defender 2010\Desktop Defender 2010.lnk
c:\Documents and Settings\All Users\Start Menu\Programs\Desktop Defender 2010\How to Activate Desktop Defender 2010.lnk
%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Desktop Defender 2010.lnk
c:\Program Files\Desktop Defender 2010
c:\Program Files\Desktop Defender 2010\AF.dll
c:\Program Files\Desktop Defender 2010\daily.cvd
c:\Program Files\Desktop Defender 2010\Desktop Defender 2010.exe
c:\Program Files\Desktop Defender 2010\guide.chm
c:\Program Files\Desktop Defender 2010\hjengine.dll
c:\Program Files\Desktop Defender 2010\IEAddon.dll
c:\Program Files\Desktop Defender 2010\MFC71.dll
c:\Program Files\Desktop Defender 2010\MFC71ENU.DLL
c:\Program Files\Desktop Defender 2010\msvcp71.dll
c:\Program Files\Desktop Defender 2010\msvcr71.dll
c:\Program Files\Desktop Defender 2010\MyTaskMgrDll.dll
c:\Program Files\Desktop Defender 2010\pthreadVC2.dll
c:\Program Files\Desktop Defender 2010\shellext.dll
c:\Program Files\Desktop Defender 2010\siglsp.dll
c:\Program Files\Desktop Defender 2010\tdifw_drv_WLH.sys
c:\Program Files\Desktop Defender 2010\tdifw_drv_WXP.sys
c:\Program Files\Desktop Defender 2010\uninstall.exe

File Location Notes:

%UserProfile% refers to the current user's profile folder. By default, this is C:\Documents and Settings\<Current User> for Windows 2000/XP, C:\Users\<Current User> for Windows Vista/7/8, and c:\winnt\profiles\<Current User> for Windows NT.


Associated Desktop Defender 2010 Windows Registry Information:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{CCB5551D-8594-4999-85F9-1E3EABCB95AC}
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Desktop Defender 2010
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent\Post Platform "Desktop Defender 2010"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "Desktop Defender 2010"
HKEY_CURRENT_USER\Software\Microsoft\Windows NT\CurrentVersion\Winlogon "Shell" = "C:\Program Files\Desktop Defender 2010\Desktop Defender 2010.exe"
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run "<random>"



This is a self-help guide. Use at your own risk.

BleepingComputer.com can not be held responsible for problems that may occur by using this information. If you would like help with any of these fixes, you can ask for malware removal assistance in our Virus, Trojan, Spyware, and Malware Removal Logs forum.

If you have any questions about this self-help guide then please post those questions in our Am I infected? What do I do? and someone will help you.

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