Remove System Check (Uninstall Guide)

System Check is a malicious software that will display fake alerts, claiming different PC issues were detected on your computer.The security alerts are professional looking pop-ups and when you click on them, you’re advised to buy System Check in order to fix these problems.
In reality, none of the reported issues are real, and are only used to scare you into buying System Check and stealing your personal financial information.
To make matters worse, System Check installs malicious code that puts you at risk of attack from additional threats.
We strongly advise you to follow our System Check removal guide and ignore any alerts that this malicious software might generate.Under no circumstance should you buy this rogue software as this can lead to identity theft.
If you’ve got a System Check infection , you’ll be seeing this screens :

Registration codes for System Check

You can use one of the following registration codes to register this malicious software and stop the fake alerts.

1203978628012489708290478989147

Please keep in mind that entering the above registration code will NOT remove System Check  from your computer , instead it will just stop the fake alerts so that you’ll be able to complete our removal guide without being interrupted by this rogue.

Removal guide for System Check

STEP 1 : Start your computer in Safe Mode with Networking

1. Remove all floppy disks, CDs, and DVDs from your computer, and then restart your computer.
2. Press and hold the F8 key as your computer restarts.You need to press F8 before the Windows logo appears. If the Windows logo appears, you will need to try again by waiting until the Windows logon prompt appears, and then shutting down and restarting your computer.
3. On the Advanced Boot Options screen, use the arrow keys to highlight Safe Mode with Networking , and then press ENTER.
   
4. Log on to your computer with a user account that has administrator rights.

STEP 2: Remove System Check malicious proxy server

System Check may add a proxy server which prevents the user from accessing the internet,follow the below instructions to remove the proxy.

1. Start Internet Explorer.
   • For Internet Explorer 9 : Click on the gear icon at the top (far right) and click again on Internet Options.
   • For Internet Explorer 8 : Click on Tools, select Internet Options.

   

2. Go to the tab Connections.At the bottom, click on LAN settings.
   
3. Uncheck the option Use a proxy server for your LAN. This should remove the malicious proxy server and allow you to use the internet again.
   

If you are a Firefox users, go to Firefox(upper left corner) → Options → Advanced tab → Network → Settings → Select No Proxy

STEP 3:  Remove the System Check rootkit with Kaspersky TDSSKiller

System Check may install a  TDSS Rootkit infection which will cause browser redirects and other malicious behavior.To remove the System Check  rootkit, we need to run a system scan with Kaspersky TDSSKiller.

1. Please download the latest official version of Kaspersky TDSSKiller.
   
2. Before you can run Kaspersky TDSSKiller, you first need to rename it so that
   you can get it to run. To do this, right-click on the TDSSKiller.exe icon and select Rename.
   Edit the name of the file from TDSSKiller.exe to iexplore.exe, and then double-click on it to launch.
   
3. Kaspersky TDSSKiller will now start and display the welcome screen as shown below.In order to start a system scan , press the ‘Start Scan’ button.
   
4. Kaspersky TDSSKiller will now scan your computer for System Check malicious files.
   
5. When the scan has finished it will display a result screen stating whether or not the infection was found on your computer. If it was found it will display a screen similar to the one below.
   
6. To remove the infection simply click on the Continue button and TDSSKiller will attempt to clean the infection.
   A reboot might require to completely remove the malware from your system. In this scenario, always confirm the reboot action to be on the safe side.

Note: IF you have rebooted your computer,please start again in ‘Safe Mode with Networking’ before proceeding to the next step.You can find details on how to start in ‘Safe Mode with Networking’ in Step 1.

STEP 4: Run RKill to terminate known malware processes associated with System Check.

RKill is a program that attempts to terminate any malicious processes associated with System Check ,so that your normal security software can then run and clean your computer of infections.

As RKill only terminates a program’s running process, and does not delete any files, after running it you should not reboot your computer as any malware processes that are configured to start automatically will just be started again.

1. While your computer is in Safe Mode with Networking ,please download the latest official version of RKill.
   
2. Double-click on the RKill iconin order to automatically attempt to stop any processes associated with System Check.
   
3. RKill will now start working in the background, please be patient while the program looks for various malware programs and tries to terminate them.
   
   • If you receive a message that RKill is an infection, that is a fake warning given by the rogue. As a possible solution we advise you to leave the warning on the screen and then try to run RKill again.Run RKill until the fake program is not visible but not more than ten times.
   • If you continue having problems running RKill, you can download the other renamed versions of RKill from here.
4. When Rkill has completed its task, it will generate a log. You can then proceed with the rest of the guide.
   

WARNING: Do not reboot your computer after running RKill as the malware process will start again , preventing you from properly performing the next step.

STEP 5: Remove System Check malicious files with Malwarebytes Anti-Malware FREE

1. Please download the latest official version of Malwarebytes Anti-Malware FREE.
   
2. Install Malwarebytes’ Anti-Malware by double clicking on mbam-setup.
   
3. 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 Finishbutton. If Malwarebytes’ prompts you to reboot, please do not do so.
   
4. Malwarebytes Anti-Malware will now start and you’ll be prompted to start a trial period , please select ‘Decline‘ as we just want to use the on-demand scanner.
   
5. On the Scanner tab,please select Perform full scan and then click on the Scan button to start scanning your computer for any possible infections.
   
6. Malwarebytes’ Anti-Malware will now start scanning your computer for System Check malicious files as shown below.
   
7. When the scan is finished a message box will appear, click OK to continue.
   
8. You will now be presented with a screen showing you the malware infections that Malwarebytes’ Anti-Malware has detected.Please note that the infections found may be different than what is shown in the image.Make sure that everything is Checked (ticked) and click on Remove Selected button.
   
9. Malwarebytes’ Anti-Malware will now start removing the malicious files.If during the removal process Malwarebytes will display a message stating that it needs to reboot, please allow this request.
   

STEP 6: Double check your system for any left over infections with HitmanPro

1. This step can be performed in Normal Mode ,so please download the latest official version of HitmanPro.
   
2. Start HitmanPro by double clicking on the previously downloaded file.
   
   NOTE : If you have problems starting HitmanPro, use the “Force Breach” mode. Hold down the left CTRL-key when you start HitmanPro and all non-essential processes are terminated, including the malware process. (How to start HitmanPro in Force Breach mode – video)
3. Click on Next to start a scan for malicious software.
   
4. The setup screen is displayed, from which you can decide whether you wish to install HitmanPro on your machine or just perform a one-time scan, select a option then click on Next to start a system scan.
   
5. HitmanPro will start scanning your system for malicious files. Depending on the size of your hard drive, and the performance of your computer, this step will take several minutes.
   
6. Once the scan is complete,a screen displaying all the malicious files that the program found will be shown as seen in the image below.After reviewing each malicious object click Next.
   
7. Click Activate free license to start the free 30 days trial and remove the malicious files.
   
8. HitmanPro will now start removing the infected objects, and in some instances, may suggest a reboot in order to completely remove the malware from your system. In this scenario, always confirm the reboot action to be on the safe side.
   

STEP 7 : Unhide your files and folders

System Check modifies your file system in such a way that all files and folders become hidden, to restore the default settings , you’ll need to run the below program.

• Please download Unhide.exe to unhide your files and folders.
  
• Double-click on the Unhide.exe icon on your desktop and allow the program to run.
  

STEP 8: Remove the residual damage from System Check

System Check may also modify your HOSTS file default settings, which can cause browser redirects or errors while trying to access antivirus and security websites.

To protect itself, System Check has changed the permissions of the HOSTS file so you can’t edit or delete it.

1. Please download the following batch fileto revert your HOSTS file permissions:
   hostfix.bat (Size: 134 bytes)
2. Click on hostfix.bat and allow this file to run.Once it starts you will see a small black window that opens and then quickly goes away, then you should be able access your HOSTS file.
3. Please download and run the below file from Microsoft to revert your host file to its original settings.Please note that if you have added custom entries to your HOSTS file then you will need to add them again after restoring the default HOSTS file.
   

STEP 9 : Get your desktop look back!

System Check changes your desktop background to a solid black color,to change it back to default one follow the below instruction.

• Windows XP : Click on the Start button and then select Control Panel. When the Control Panel opens, please click on the Display icon. From this screen you can now change your Theme and desktop background.
• Windows 7 and Vista : Click on the Start button and then select Control Panel. When the Control Panel opens, please click on the Appearance and Personalization category. Then select Change the Theme or Change Desktop Background to revert back to your original Theme and colors.

If you are still experiencing problems while trying to remove System Check from your machine, please start a new thread in our Malware Removal Assistance forum.