Remove XJR Antivirus (Uninstall Guide)

  • May 21, 2010

XJR Antivirus is a rogue anti-spyware program from the same family as Your PC Protector. This malware is promoted through the use of Trojans that install XJR Antivirus on your computer without your permission or knowledge. When this program is installed it will be configured so that it starts automatically when you login to Windows. Once running, it will perform a scan of your computer and state that numerous files are infected, but will not allow you to remove any of these files using the program until you first purchase it. All of these files, though, are either fake or legitimate programs that should not be deleted. Therefore, please do not manually delete any of the infections it shows as it may cause your computer to not operate correctly.

This infection consists of two executables called XJR Antivirus.exe and C:\Program Files\svchost.exe. C:\Program Files\svchost.exe is configured as a Windows service that will start when Windows boots up. When this service starts it will then launch the XJR Antivirus.exe program. While the service is running it will also poll the list of running processes and if it sees that the XJR Antivirus.exe program is not running it will attempt to launch it again. Therefore, to remove this infection you must terminate both processes in order to make it so XJR Antivirus does not restart itself.

  • XJR Antivirus screen shot
  • Scan summary
  • Fake Windows Security Center
  • Fake Security Warning #1
  • Fake Security Warning #2
  • Fake svchost.exe crash
  • Process is infected alert

While XJR Antivirus is running it will not allow you to run numerous executables on your computer. It does this in order to protect itself from anti-malware programs that may know how to remove it. If you attempt to run an executable you will receive a message stating that the program is infected and then the legitimate program will be terminated. An example of one of these alerts is:

Running of application is impossible. The file C:\Program Files\Malwarebytes' Anti-Malware\mbam.exe is infected.

While the rogue is running it will also display fake security alerts from your Windows taskbar stating that your computer is infected or that your computer is under attack. These alerts include:

Security Warning
Malicious programs that may steal your private information and prevent your system from working properly are detected on your computer.
Clear here to clean your PC immediately.

Internet attack attempt detected:
Somebody is truing to attack your PC: This can result in loss of your personal information and infection other computers connected to your network. Click here to prevent attack.

Last, but not least, XJR Antivirus will also display a fake Windows Security Center that suggests that you purchase the program. Just like the scan results, all of these security alerts and messages are just another tactic to scare you into purchasing the software and should be ignored.

As you can see, XJR Antivirus was created to scare you into thinking that you have a computer security program in the hopes that you will then purchase the program. It goes without saying that you should definitely not purchase this program, and if you have, you should contact your credit card company and dispute the charges. Finally, please use the guide below to remove this infection and any related malware for free.

Self Help Guide

This guide contains advanced information, but has been written in such a way so that anyone can follow it. Please ensure your data is backed up before proceeding.

If you are uncomfortable making changes to your computer or following these steps, do not worry! Instead you can get free one-on-one help by asking in the forums.
  1. Print out these instructions as we may need to close every window that is open later in the fix.

  2. It is possible that the infection you are trying to remove will not allow you to download files on the infected computer. If this is the case, then you will need to download the files requested in this guide on another computer and then transfer them to the infected computer. You can transfer the files via a CD/DVD, external drive, or USB flash drive.

  3. Before we can do anything we must first end the processes that belong to XJR Antivirus so that it does not interfere with the cleaning procedure. To do this, please download RKill to your desktop from the following link.

    RKill Download Link - (Download page will open in a new tab or browser window.)

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

  4. Once it is downloaded, double-click on the iExplore.exe icon in order to automatically attempt to stop any processes associated with XJR Antivirus and other Rogue programs. 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 you can continue with the next step. If you get a message that RKill is an infection, do not be concerned. This message is just a fake warning given by XJR Antivirus when it terminates programs that may potentially remove it. If you run into these infections warnings that close RKill, a trick is to leave the warning on the screen and then run RKill again. By not closing the warning, this typically will allow you to bypass the malware trying to protect itself so that rkill can terminate XJR Antivirus . So, please try running RKill until the malware is no longer running. You will then be able to proceed with the rest of the guide. If you continue having 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.

  5. 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)

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

  7. Double-click on the icon on your desktop named mb3-setup-1878.1878- This will start the installation of MBAM onto your computer.

  8. 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.

  9. 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.

  10. 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

  11. 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.

  12. You can now exit the MBAM program.

  13. As many rogues and other malware 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 XJR Antivirus 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.

View Associated XJR Antivirus Files

%UserProfile%\Desktop\XJR Antivirus.lnk %UserProfile%\Local Settings\Temp\win1.tmp %UserProfile%\Local Settings\Temp\win2.tmp %UserProfile%\Start Menu\Programs\XJR Antivirus %UserProfile%\Start Menu\Programs\XJR Antivirus\XJR Antivirus.lnk c:\Program Files\adc_w32.dll c:\Program Files\alggui.exe c:\Program Files\nuar.old c:\Program Files\skynet.dat c:\Program Files\svchost.exe c:\Program Files\wp3.dat c:\Program Files\wp4.dat c:\Program Files\wpp.exe c:\Program Files\XJR Antivirus c:\Program Files\XJR Antivirus\XJR Antivirus.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.

View Associated XJR Antivirus Registry Information

HKEY_CURRENT_USER\Software\XJR Antivirus HKEY_CLASSES_ROOT\CLSID\{149256D5-E103-4523-BB43-2CFB066839D6} HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{149256D5-E103-4523-BB43-2CFB066839D6} HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\AdbUpd

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.


Remember Me
Sign in anonymously