Remove CoreGuard Antivirus 2009 (Removal Instructions)

  • April 29, 2009
  • 06:59 PM
  • Read 22,865 times

What is CoreGuard Antivirus 2009?

Skip this and learn how to remove CoreGuard Antivirus 2009!

CoreGuard Antivirus 2009 is a rogue anti-spyware program discovered by security researcher S!RI, that uses an interesting trick in order to protect itself. This trick is to uninstall legitimate anti-malware programs when CoreGuard detects they are installed. When CoreGuard Antivirus 2009 starts it will examine the Windows Registry key that contains the list of programs that Windows knows how to uninstall from your computer. If it detects certain programs installed it will display the following message and then start the program's uninstall process:

There is unauthorized antivirus software detected on your computer. It is recommended you to remove it, otherwise it could conflict with CoreGusard <sic> Antivirus 2009.

The anti-malware programs that it detects, and attempts to uninstall include:

  • MalwareBytes' Anti-malware
  • F-Secure
  • NOD32
  • Avast
  • AntiVir
  • AVG
  • Norton Internet Security

  • CoreGuard Antivirus 2009 main screen
  • CoreGuard Antivirus scanning screen
  • Scan Summary
  • CoreGuard installing
  • False security alert
  • Warning that MalwareBytes' is installed

CoreGuard will also be configured to start whenever you log into Windows. When it runs it will automatically perform a scan of your computer, which will find a variety of infections that it will not let you remove until you purchase the program. These infections, though, are either fake or nonexistent and can be ignored. While running, it will also display numerous alerts and nag screens in order to convince you to purchase the program. Some examples of the alerts you may see are:

User's activity loggers detected!
It's strongly recommended to remove detected threats right now!

Most of the viruses and worms on your PC because of visiting pornosites or warez/torrent sites.




These alerts are also disruptive to your normal applications because they will be displayed over your running applications and can't be minimized. The only way to get rid of these alerts is to acknowledge them.

If you find that you are infected with CoreGuard Antivirus 2009, then please use the remove guide shown below in order to remove it and any associated malware for free.

CoreGuard Antivirus 2009 Removal Options

Self Help Guide

This guide is intended for advanced computer users only. Please ensure your data is backed up before proceeding. If you are uncomfortable making changes to your computer or following these stpes, do not worry! Instead you can get free one-on-one help by asking in the forums.

This removal guide may appear overwhelming due to the amount of the steps and numerous programs that will be used. It was only written this way to provide clear, detailed, and easy to understand instructions that anyone can use to remove this infection for free. Before using this guide, we suggest that you read it once and download all necessary tools to your desktop. After doing so, please print this page as you may need to close your browser window or reboot your computer.


To terminate any programs that may interfere with the removal process we must first download the Rkill program. Rkill will search your computer for active malware infections and attempt to terminate them so that they wont interfere with the removal process. To do this, please download RKill to your desktop from the following link.


When at the download page, click on the Download Now button labeled iExplore.exe. When you are prompted where to save it, please save it on your desktop.


Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with CoreGuard Antivirus 2009 and other malware. Please be patient while the program looks for various malware programs and ends them. When it has finished, the black window will automatically close and a log file will open. Please review the log file and then close so you can continue with the next step. If you have problems running RKill, you can download the other renamed versions of RKill from the rkill download page. All of the files are renamed copies of RKill, which you can try instead. Please note that the download page will open in a new browser window or tab.

Do not reboot your computer after running RKill as the malware programs will start again.


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

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


Double-click on the icon on your desktop named mbam-setup-bc.1878- This will start the installation of MBAM onto your computer.


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.


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

Malwarebytes Anti-Malware

We now need to enable rootkit scanning to detect the largest amount of malware that is possible with MalwareBytes. To do this, click on the Settings section at the top of the MalwareBytes application and you wil be brought to the general settings section.

Now click on the Detection and Protection settings category on the left sidebar. You will now be shown the settings MalwareBytes will use when scanning your computer.

Malwarebytes Anti-Malware Detection and Protection Settings Page

At this screen, please put a checkmark in the option labaled Scan for rootkits. If you do not see this option, please make sure you are using the latest version of MalwareBytes.


Now that you have enabled rootkit scanning, click on the Scan button to go to the scan screen.

Malwarebytes Anti-Malware Scan Screen

Make sure Threat ScanStart Scan button. If there is an update available for Malwarebytes it will automatically download and install it before performing the scan.


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


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 seleted 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.


You can now exit the MBAM program.


As many malware and unwanted programs are installed through vulnerabilities found in out-dated and insecure programs, it is strongly suggested that you use Secunia PSI to scan for vulnerable programs on your computer. A tutorial on how to use Secunia PSI to scan for vulnerable programs can be found here:

How to detect vulnerable and out-dated programs using Secunia Personal Software Inspector


Your computer should now be free of the CoreGuard Antivirus 2009 program. If your current security solution allowed this program on your computer, you may want to consider purchasing the full-featured 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 link ed below:

Preparation Guide For Use Before Using Malware Removal Tools and Requesting Help

Malwarebytes Anti-Malware

Purchase the full-featured version of Malwarebytes Anti-Malware, which includes real-time protection, scheduled scanning, and website filtering, to protect yourself against these types of threats in the future!

View Associated CoreGuard Antivirus 2009 Files

c:\Program Files\Coreguard Antivirus 2009 c:\Program Files\Coreguard Antivirus 2009\blacklist.cga c:\Program Files\Coreguard Antivirus 2009\core.cga c:\Program Files\Coreguard Antivirus 2009\CoreExt.dll c:\Program Files\Coreguard Antivirus 2009\Coreguard 2009.exe c:\Program Files\Coreguard Antivirus 2009\firewall.dll c:\Program Files\Coreguard Antivirus 2009\Uninstall.exe c:\Program Files\Coreguard Antivirus 2009\Help c:\Program Files\Coreguard Antivirus 2009\Help\reg.html c:\Program Files\Coreguard Antivirus 2009\Help\support.png c:\Program Files\Coreguard Antivirus 2009\Help\unreg.html c:\Program Files\Coreguard Antivirus 2009\Help\images c:\Program Files\Coreguard Antivirus 2009\Help\images\delete.png c:\Program Files\Coreguard Antivirus 2009\Help\images\info.png c:\Program Files\Coreguard Antivirus 2009\Help\images\plus_circle.png c:\Program Files\Coreguard Antivirus 2009\Help\images\tick.png c:\Program Files\Coreguard Antivirus 2009\Help\images\warn.png c:\Program Files\Coreguard Antivirus 2009\Help\images\buttons c:\Program Files\Coreguard Antivirus 2009\Help\images\buttons\offline.gif c:\Program Files\Coreguard Antivirus 2009\Help\images\buttons\online.gif c:\Program Files\Coreguard Antivirus 2009\Help\images\buttons\voice.gif %UserProfile%\Application Data\Microsoft\Internet Explorer\Quick Launch\Coreguard 2009.lnk %UserProfile%\Desktop\Coreguard 2009.lnk %UserProfile%\Start Menu\Programs\Coreguard Antivirus 2009 %UserProfile%\Start Menu\Programs\Coreguard Antivirus 2009\Coreguard 2009.lnk %UserProfile%\Start Menu\Programs\Coreguard Antivirus 2009\Uninstall Coreguard Antivirus 2009.lnk

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 CoreGuard Antivirus 2009 Registry Information

HKEY_CURRENT_USER\Software\CoreGuard HKEY_CLASSES_ROOT\CLSID\{5E2121EE-0300-11D4-8D3B-444553540000} HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\Coreguard Antivirus 2009 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run "Coreguard Antivirus 2009"

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