System Check is a fake computer tool that carry out untrue scan on the computer and state that it found critical hard drive errors. It also informs several corrupted registry entries that can cause system failure. Moreover, it will identify critical errors in computer’s memory that needs immediate repair. All these reports are false. It is an imaginary act formed by malware author in order to persuade you to fix the PC through a paid version of System Check.
System Check Trojan spreads so fast. Since it was first seen on first quarter of 2012, the malware still exist until now. It is believed that this threat have infected huge number of computer ever since. Moreover, there are reports that many falls into the trap created by System Check. Many computer users wasted their money in buying a worthless program.
This malware is perhaps one of the most harmful programs that lurk up to this date. As soon as it is spotted on your computer, immediately run antivirus scan. You need to remove this threat before it can cause more damages to the computer. Some victim’s claims that System Check has managed to lock their files and it is now unusable. This malware can also delete your installed antivirus program to avoid removal. Therefore, you must not waste time. Remove System Check as soon as possible.
What are the Symptoms of System Check virus Infection?
Obvious symptoms of this malware infection includes System Check scan when you start Windows. It will run a scan even without a command from computer user. See the image for your reference.
It will modify Windows Registry and add the following entries:
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main “Use FormSuggest” = ‘Yes’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop “NoChangingWallPaper” = ‘1’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer “NoDesktop” = ‘1’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System “DisableTaskMgr” = ‘1’
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system “DisableTaskMgr” = ‘1’
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Download “CheckExeSignatures” = ‘no’
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced “ShowSuperHidden” = ‘0’
The threat will drop the following malicious files:
%AppData%\Microsoft\Internet Explorer\Quick Launch\System Check.lnk
%StartMenu%\Programs\System Check\System Check.lnk
%StartMenu%\Programs\System Check\Uninstall System Check.lnk
Procedures to Remove System Check
Removal steps on this page will help you get rid of the threat effectively using tools and virus scanners. Please make sure that you will carry out the guide in exact order.
Procedure 1: Uninstall System Check from Windows Control Panel
1. Begin the removal process by uninstalling the rogue program from Windows. To do this, we need to open Control Panel. Please ensure that you are logon with the Administrative privilege to access this function.
Accessing Control Panel in Windows 8 and Windows 10
- On your keyboard, Press Windows Key + X.
- Once Quick Access Menu appears on the screen, please click on Control Panel.
- Control Panel window will open. Please proceed to the next step which is uninstalling System Check.
How to access Control Panel in Windows XP, Windows Vista / 7
- Click on Start button that can be found on bottom left corner of the screen.
- From the list, choose Control Panel to access settings of Windows and make the needed changes.
2. To uninstall System Check, click on Uninstall a program under Programs Section. It will open a Program and Features window where-in you can uninstall, change, or repair installed software.
3. Look for System Check title or any suspicious name that was installed recently. To do this, you need to arrange the items chronologically. Click on Installed On to display recently installed programs.
4. Select System Check or any suspicious items and then Click on Uninstall button to remove it from Windows.
5. If it prompts for confirmation, please click OK button to proceed.
Procedure 2: Scan Computer in Safe Mode Using Installed Anti-virus Program
1. When troubleshooting a PC, one common step is to boot operating system into Safe Mode with Networking. The same approach will be used in the removal of System Check. Please execute instructions based on your Windows OS version.
Start Windows 8 / Windows 10 in Safe Mode with Networking
- Close all running programs on your computer because we will need to restart Windows on this procedure.
- Press and Hold Shift key on your keyboard while clicking on Restart.
- You will then be presented with Troubleshooting Options.
- Click on Troubleshoot icon.
- Then, Click on Advanced Options icon.
- Select Startup Settings icon and then, Click on Restart button.
- When Windows restarts, it will prompt to choose number from the list of options. Press the number on your keyboard that corresponds to Safe Mode with Networking, commonly number 5.
- Once in Safe Mode, please proceed to the next step which is running a virus scan on the computer.
Start in Safe Mode with Networking (Windows XP / Vista / 7 Instruction)
- Please restart the computer and just before Windows start, press F8 on your keyboard repeatedly. You will be presented with Advanced Options Menu.
- From the selections, choose Safe Mode with Networking. Please use keyboard's arrow up/down to navigate between selections and press Enter to proceed.
2. Once your Windows is running in Safe Mode, open your installed anti-virus programs and update it to the most recent version by automatically downloading necessary updates.
3. Thoroughly scan the computer and remove all identified threats. Do not restart or turn off the computer after the scan process. You still need to run another scan. Please follow the next procedure.
Procedure 3: Scan and remove System Check files with MalwareBytes Anti-Malware
To remove System Check, download Malwarebytes Anti-Malware. This tool is effective in getting rid of Trojans, viruses and malware.
1. After downloading, please install the program using the default settings.
2. At the end of the installation, please make sure that it will download necessary updates.
3. Once update has completed, MBAM will launch.
4. Select SCAN from the top menu. Then, click on Threat Scan (Recommended) section.
5. Click on Start Scan to thoroughly scan the computer. Remove all threats detected by this anti-malware program after the process.
Procedure 4: Run TrendMicro's Anti-Threat Toolkit (ATTK) to check and delete any remnants of System Check.
As an added help to remove System Check, you can scan the computer with Anti-Threat Toolkit. This software is provided and distributed by TrendMicro. Follow this procedure to run a scan with this tool.
1. Download the package by clicking on the button below. This will launch a new browser window that contains further details about the tool.
2. Save the file to a location on your hard drive.
3. Browse for the location of the file and double-click to run. If you are using Windows Vista or Windows 7, right-click on extracted file supportcustomizedpackage and click on Run as Administrator.
4. When program launch, it will run a command prompt to initialize, prepare components, and update the program.
5. Next it will open the graphical user interface (GUI) of Anti-Threat Toolkit.
6. Click on Scan Now. This operation will scan all System Check files and processes in your computer and display a list of result for possible Fake Antivirus program and malware that needs to be removed.
7. Tick all items that are detected by the program, and then click Clean. The tool will start removing System Check components from the computer.
8. If it asked you to restart Windows, please do so.
Protect your PC from System Check or Similar Attack
Turn On Safe Browsing Features
Google Chrome's Protection from Dangerous Sites
With Google Chrome's Dangerous Site Protection feature, you will have lesser risks browsing the web. It will display a warning when the site you are trying to visit is suspicious, thus, you can prevent System Check infection. To enable protection from dangerous sites, please do these steps:
1. Open Google Chrome.
2. In the address bar, type this: chrome://settings/ and then, Press Enter.
3. Once on the settings page, click on Show advanced settings... at the bottom of the page to see the rest of the Chrome setup.
4. Locate Privacy section and mark 'Protect you and your device from dangerous sites'.
5. Please restart Google Chrome. New settings keep your browser safe while surfing the web.
Internet Explorer - Activate SmartScreen Filter
Internet Explorer versions 8 and 9 has this feature called SmartScreen Filter. It helps detect phishing web sites and protect you from downloading malicious programs including System Check. To turn on SmartScreen Filter, follow these steps:
1. Please open Internet Explorer.
2. On top menu, select Tools (IE 9). For IE 8, please look for Safety menu.
3. Select SmartScreen Filter from the drop-down list and click on Turn on SmartScreen Filter.
4. Please restart Internet Explorer.
Mozilla Firefox - Block Attack Sites and Web Forgeries
Phishing and Malware Protection is a built-in feature on Firefox version 3 or later. It warns you when a page you are trying to visit contains phishing content or an attack site designed to drop threats such as System Check. To help you keep safe while browsing the Internet using Firefox, please follow this guide:
1. Open Mozilla Firefox browser.
2. On top menu, click on Open Menu. Then select Options from the list.
3. Select Security and put a check mark on the following items:
- Warn me when sites try to install add-ons
- Block reported attack sites
- Block reported web forgeries
Edge Browser - SmartScreen Filter
SmartScreen filter is a built-in feature in Microsoft Edge browser that can help you deter malicious programs such as System Check. It can block malicious web sites and downloads.
1. Open Microsoft Edge browser.
2. Click on More Actions button located at top right corner of the screen.
3. Select Settings from the drop-down list.
4. Under Settings menu, go to Advanced Settings section and click on View Advanced Settings.
5. Scroll down to "help protect my PC from malicious sites and downloads with SmartScreen Filter". Turn it to ON.
6.You may now restart Microsoft Edge browser.