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Remove Windows Enterprise Defender (Uninstall Guide)

By on October 10, 2009 @ 01:37 PM | Read 33,380 times.
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Windows Enterprise Defender is a rogue anti-spyware, or scareware, program from the Virus Doctor family. When installed, this program will be configured to start automatically when you load Windows as well as making a series of harmless files with the following names:


When Windows Enterprise Defender scans your computer, it will detect the above files as infections and state that you need to purchase the program before it will remove them. The reality is that these files are all harmless and can have no effect on your computer. They are only being created, and then detected, to scare you into thinking you have actual infections on your computer. As you can see this is a scam and you should not purchase the program for any reason.


Windows Enterprise Defender screen shot
Windows Enterprise Defender screen shot
For more screen shots of this infection click on the image above.
There are a total of 4 images you can view.


While Windows Enterprise Defender is running it will display security alerts on your desktop stating that your computer is under attack or that active malware has been detected. These alerts are just another tactic where they are trying to convince you that your computer has a problem and should be ignored. As you can see, Windows Enterprise Defender purposely uses fake alerts and false scan results as a method to scare you into purchasing the software. It goes without saying that you should not do so, and if you already have we suggest you contact your credit card company to dispute the charges. If you are infected with this malware, then please use the guide below to remove it from your computer.


Threat Classification:


Advanced information:

View Windows Enterprise Defender files.
View Windows Enterprise Defender Registry Information.


Tools Needed for this fix:


Symptoms that may be in a HijackThis Log:

O4 - HKLM\..\Run: [Windows Enterprise Defender] "C:\Documents and Settings\All Users\Application Data\c9ba\WindowsEDefender.exe" /s /d


Article Updates:

10/10/09 - Initial guide creation.


Automated Removal Instructions for Windows Enterprise Defender 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. At this point you should download Malwarebytes Anti-Malware, or MBAM, to scan your computer for any any infections or adware that may be present. Please download Malwarebytes from the following location and save it to your desktop:

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

  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 Launch Malwarebytes Anti-Malware checked. Then click on the Finish button. If MalwareBytes prompts you to reboot, please do not do so.

  6. MBAM will now start and you will be at the main screen as shown below.

    Malwarebytes Anti-Malware

    Please click on the Scan Now button to start the scan. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.

  7. MBAM will now start scanning your computer for malware. This process can take quite a while, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Malwarebytes Anti-Malware

  8. When MBAM is finished scanning it will display a screen that displays any malware that it has detected. Please note that the infections found may be different than what is shown in the image below due to the guide being updated for newer versions of MBAM.

    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.

  9. You can now exit the MBAM program.

Your computer should now be free of the Windows Enterprise Defender 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


View Associated Windows Enterprise Defender Files

c:\Documents and Settings\All Users\Application Data\c9ba
c:\Documents and Settings\All Users\Application Data\c9ba\83.mof
c:\Documents and Settings\All Users\Application Data\c9ba\mozcrt19.dll
c:\Documents and Settings\All Users\Application Data\c9ba\sqlite3.dll
c:\Documents and Settings\All Users\Application Data\c9ba\unins000.dat
c:\Documents and Settings\All Users\Application Data\c9ba\WED.ico
c:\Documents and Settings\All Users\Application Data\c9ba\WindowsEDefender.exe
c:\Documents and Settings\All Users\Application Data\c9ba\WEDDSys
c:\Documents and Settings\All Users\Application Data\c9ba\WEDDSys\vd952342.bd
c:\Documents and Settings\All Users\Application Data\WEDDSys
c:\Documents and Settings\All Users\Application Data\WEDDSys\wed.cfg
%UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Windows Enterprise Defender.lnk
%UserProfile%\Application Data\Windows Enterprise Defender
%UserProfile%\Application Data\Windows Enterprise Defender\cookies.sqlite
%UserProfile%\Desktop\Windows Enterprise Defender.lnk
%UserProfile%\Start Menu\Windows Enterprise Defender.lnk
%UserProfile%\Start Menu\Programs\Windows Enterprise Defender.lnk
c:\Program Files\Mozilla Firefox\searchplugins\search.xml

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.

View Associated Windows Enterprise Defender Windows Registry Information

HKEY_USERS\.DEFAULT\Software\Microsoft\Internet Explorer\SearchScopes "URL" => "http://search-gala.com/?&uid=7&q={searchTerms}"
HKEY_USERS\S-1-5-18\Software\Microsoft\Internet Explorer\SearchScopes "URL"
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform "[xSP_2:61a6083b6194a2314e3dd54cf9615e36_7]"
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent\Post Platform "876902803"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run "Windows Enterprise Defender"


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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