Remove Multicheck Checkbox Checker Extension Virus

Multicheck Checkbox Checker is a browser extension that injects advertisements into websites you visit and redirects your browser search queries.

Image: Multicheck Checkbox Checker Chrome Extension
Image: Multicheck Checkbox Checker Chrome Extension

What is the Multicheck Checkbox Checker extension?

Multicheck Checkbox Checker is a browser extension that claims to “make it easier to select multiple checkboxes simply check or uncheck multiple checkboxes at a time by clicking and dragging”, however it also displays its own advertisements in the browser. When installed, this extension will open new tabs in the browser that display advertisements trying to sell software, push fake software updates, and tech support scams.

When the Multicheck Checkbox Checker browser hijacker is installed on a computer, common symptoms include:

  • The Multicheck Checkbox Checker program or browser extension is installed on your computer.
  • Advertisements appear in places they shouldn’t be.
  • Website links redirect to sites different from what you expected.
  • Your browser search queries are redirected through unwanted search engines.

How did the Multicheck Checkbox Checker extension get on my computer?

The Multicheck Checkbox Checker extension is currently being distributed using advertisements similar to the one below.

Image: Malicious advertisement distributing Multicheck Checkbox Checker extension
Image: Malicious advertisement distributing Multicheck Checkbox Checker extension

Less than reputable sites can redirect your browser to these Multicheck Checkbox Checker ads to generate advertising revenue. If this happens, you can close the page and install a legitimate adblocker like AdGuard to remove ads from the sites you visit.
However, if you continuously see these Multicheck Checkbox Checker ads, then your computer might be infected with a malicious program, and we will need to scan your device for malware and remove it.

If you do not know how this extension was installed or are concerned other extensions or unwanted programs may be installed on your device, you can use the removal guide below.

Removal instructions for Multicheck Checkbox Checker browser hijacker

This malware removal guide may appear overwhelming due to the number of steps and numerous programs that are being used. We have only written it this way to provide clear, detailed, and easy-to-understand instructions that anyone can use to remove malware for free.
Please perform all the steps in the correct order. If you have any questions or doubts at any point, stop and ask for our assistance.
The Multicheck Checkbox Checker browser hijacker targets Windows and Mac devices, so we’ve covered them both below. Depending on which operating system is installed on your computer please click on the operating system icon below and follow the displayed steps to remove Multicheck Checkbox Checker.
Remove Multicheck Checkbox Checker from Windows
To remove Multicheck Checkbox Checker from Windows, follow these steps:

STEP 1: Use Malwarebytes to remove the Multicheck Checkbox Checker browser hijacker

In this first step, we will install Malwarebytes to scan and remove any infections, adware, or potentially unwanted programs that may be present on your computer.

Malwarebytes is one of the most popular and most used anti-malware software for Windows, and for good reasons. It is able to destroy many types of malware that other software tends to miss, without costing you absolutely nothing. When it comes to cleaning up an infected device, Malwarebytes has always been free and we recommend it as an essential tool in the fight against malware.

  1. Download Malwarebytes for Windows.

    You can download Malwarebytes by clicking the link below.

    MALWAREBYTES FOR WINDOWS DOWNLOAD LINK
    (The above link will open a new page from where you can download Malwarebytes)
  2. Double-click on the Malwarebytes setup file.

    When Malwarebytes has finished downloading, double-click on the MBSetup file to install Malwarebytes on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Download

    You may be presented with a User Account Control pop-up asking if you want to allow Malwarebytes to make changes to your device. If this happens, you should click “Yes” to continue with the Malwarebytes installation.

    Click Yes to install Malwarebytes

  3. Follow the on-screen prompts to install Malwarebytes.

    When the Malwarebytes installation begins, you will see the Malwarebytes setup wizard which will guide you through the installation process. The Malwarebytes installer will first ask you what type of computer are you installing this program on, click either Personal Computer or Work Computer.
    Malwarebytes setup: Click on Personal Computer

    On the next screen, click “Install” to install Malwarebytes on your computer.

    Click on Install to install Malwarebytes

    When your Malwarebytes installation completes, the program opens to the Welcome to Malwarebytes screen.

  4. Click on “Scan”.

    Malwarebytes is now installed on your computer, to start a scan click on the “Scan” button. Malwarebytes will automatically update the antivirus database and start scanning your computer for the Multicheck Checkbox Checker browser hijacker and other malicious programs.

    Click on Scan button

  5. Wait for the Malwarebytes scan to complete.

    Malwarebytes will now scan your computer for the Multicheck Checkbox Checker browser hijacker and other malicious programs. This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.

    Malwarebytes scanning for Multicheck Checkbox Checker

  6. Click on “Quarantine”.

    When the Malwarebytes scan is finished scanning it will show a screen that displays any malware, adware, or potentially unwanted programs that it has detected. To remove the Multicheck Checkbox Checker browser extension and other malicious programs that Malwarebytes has found, click on the “Quarantine” button.

    Review the malicious programs and click on Quarantine to remove Multicheck Checkbox Checker

  7. Restart computer.

    Malwarebytes will now remove all the malicious files and registry keys that it has found. To complete the malware removal process, Malwarebytes may ask you to restart your computer.
    Malwarebytes requesting to restart computer to complete the Multicheck Checkbox Checker removal process
    When the malware removal process is complete, you can close Malwarebytes and continue with the rest of the instructions.


STEP 3: Use HitmanPro to scan your computer for Multicheck Checkbox Checker and other malware

In this second step, we will scan the computer with HitmanPro to ensure that no other malicious programs are installed on your device.

HitmanPro is a second-opinion scanner that takes a unique cloud-based approach to malware scanning. HitmanPro scans the behavior of active files and also files in locations where malware normally resides for suspicious activity. If it finds a suspicious file that’s not already known, HitmanPro sends it to its clouds to be scanned by two of the best antivirus engines today, which are Bitdefender and Kaspersky.

Although HitmanPro is shareware and costs $24.95 for 1 year on 1 PC, there is no limit on scanning. The limitation only kicks in when there is a need to remove or quarantine detected malware by HitmanPro on your system and by then, you can activate the one-time 30-days trial to enable the cleanup.

  1. Download HitmanPro.

    You can download HitmanPro by clicking the link below.

    HITMANPRO DOWNLOAD LINK
    (The above link will open a new web page from where you can download HitmanPro)
  2. Install HitmanPro.

    When HitmanPro has finished downloading, double-click on “hitmanpro.exe” (for 32-bit versions of Windows) or “hitmanpro_x64.exe” (for 64-bit versions of Windows) to install this program on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Double-click on the HitmanPro file

    You may be presented with a User Account Control pop-up asking if you want to allow HitmanPro to make changes to your device. If this happens, you should click “Yes” to continue with the installation.

    Windows asking for permissions to run the HitmanPro setup

  3. Follow the on-screen prompts.

    When HitmanPro starts you will be presented with the start screen as shown below. Click on the “Next” button to perform a system scan.

    Click Next to install HitmanPro on your PC

    HitmanPro final installer screen

  4. Wait for the HitmanPro scan to complete.

    HitmanPro will now begin to scan your computer for the Multicheck Checkbox Checker browser hijacker and other malicious programs.
    HitmanPro scans your computer for any infections, adware, or potentially unwanted programs that may be present

  5. Click on “Next”.

    When HitmanPro has finished the scan, it will display a list of all the malware that it has found. Click on the “Next” button to have HitmanPro remove the detected items.

    HitmanPro scan summary. Click Next to remove the Multicheck Checkbox Checker malware

  6. Click on “Activate free license”.

    HitmanPro may now require to activate the free 30-days trial to remove the malicious files. To do this, click on the “Activate free license” button to begin the free 30 days trial and remove all the malicious files from your computer.
    Click on the Activate free license button

    When the malware removal process is complete, it will display a screen that shows the status of the various programs that were removed. At this screen, you should click on the Next button and then if prompted you should click on the Reboot button. If HitmanPro does not prompt you to reboot, please just click on the Close button.


STEP 3: Use AdwCleaner to remove adware and malicious browser policies

In this third step, we will use AdwCleaner to remove the malicious browser policies that were set by browser hijackers on your computer and delete malicious browser extensions.

AdwCleaner is a free popular on-demand scanner that can detect and remove malware that even the most well-known anti-virus and anti-malware applications fail to find. This on-demand scanner includes a lot of tools that can be used to fix the side effects of browser hijackers.

  1. Download AdwCleaner.

    You can download AdwCleaner by clicking the link below.

    ADWCLEANER DOWNLOAD LINK
    (The above link will open a new web page from where you can download AdwCleaner)
  2. Double-click on the setup file.

    Double-click on the file named “adwcleaner_x.x.x.exe” to start AdwCleaner. In most cases, downloaded files are saved to the Downloads folder.
    Download AdwCleaner on your computer

    AdwCleaner program will now open and you will be presented with the program’s license agreement. After you read it, click on the I agree button if you wish to continue. If Windows prompts you as to whether or not you wish to run AdwCleaner, please allow it to run.

    Windows ask if you want to run AdwCleaner

  3. Enable “Reset Chrome policies” to remove malicious browser policies.

    When AdwCleaner starts, on the left side of the window, click on “Settings” and then enable “Reset Chrome policies“.

    Enable Reset Chrome policies to remove malicious browser policies

  4. Click on the “Scan” button.

    On the left side of the AdwCleaner window, click on “Dashboard” and then click “Scan” to perform a computer scan.

    Click on Scan to start a AdwCleaner scan

  5. Wait for the AdwCleaner scan to finish.

    AdwCleaner will now scan your computer for the Multicheck Checkbox Checker browser hijacker and other malicious programs. This process can take a few minutes.

    AdwCleaner scanning for adware and other malware

  6. Click on “Quarantine” to remove malware.

    When the AdwCleaner scan is completed it will display all of the items it has found. Click on the “Quarantine” button to remove the Multicheck Checkbox Checker browser hijacker and other malicious programs from your computer.

    Click on Quarantine to remove malware

  7. Click on “Continue” to start malware removal.

    AdwCleaner will now prompt you to save any open files or data as the program will need to close any open programs before it starts to clean. Click on the “Continue” button to finish the removal process.
    Click Continue to remove malicious files

    AdwCleaner will now delete all detected malware from your computer. When the malware removal process is complete, you can close AdwCleaner and continue with the rest of the next steps from this guide.


STEP 4: Remove Multicheck Checkbox Checker extension from your web browser

In this final step, we will remove malicious extensions (including Multicheck Checkbox Checker), spam notifications, and change to default any settings that might have been changed by malware.
Please note that this method will remove all extensions, toolbars, and other customizations but will leave your bookmarks and favorites intact. For each browser that you have installed on your computer, please click on the browsers tab below and follow the displayed steps to reset that browser.

ChromeFirefoxMicrosoft EdgeInternet Explorer

Remove Multicheck Checkbox Checker browser hijacker from Google Chrome

To remove Multicheck Checkbox Checker from Google Chrome, we will reset the browser settings to their original defaults. This will reset your startup page, new tab page, search engine, and pinned tabs. It will also disable all extensions and clear temporary data like cookies. Your favorites, history, and saved passwords will not be cleared.

  1. Click the three dots in the top-right corner and then click on “Settings”.

    Open Chrome and click on the menu button (represented by three vertical dots) in the top right corner of the window. In the dropdown menu that opens, click “Settings“.
    Click on the Chrome menu button then on the Settings button

  2. Click “Advanced”.

    Chrome’s “Settings” should now be displayed in a new tab or window, depending on your configuration. In the left sidebar, click on the “Advanced” link.
    Click on the Advanced link

  3. Click “Reset and clean up”.

    In the left sidebar, under the “Advanced” section, click on “Reset and clean up“.
    Click Reset and clean up button

  4. Click “Reset settings to their original defaults”.

    In the main window, the “Reset and clean up” section is visible, as shown in the screenshot below. Click on “Reset settings to their original defaults“.
    Click on Reset settings to their original defaults

  5. Click “Reset settings”.

    A confirmation dialog will now be displayed, detailing the components that will be restored to their default state should you continue with the reset process. To complete the restoration process, click on the “Reset settings” button.
    Click on Reset Settings to restore Google Chrome to its default settings

Remove Multicheck Checkbox Checker browser hijacker from Firefox

To remove the Multicheck Checkbox Checker browser extension from Firefox we will reset the browser settings to its default. The reset feature fixes many issues by restoring Firefox to its factory default state while saving your essential information like bookmarks, passwords, web form auto-fill information, browsing history, and open tabs.

  1. Click the three horizontal lines in the top-right corner and then click on “Help”.

    Click on Firefox’s main menu button, represented by three horizontal lines. When the drop-down menu appears, select the option labeled “Help“.
    Click on the Firefox Menu button then select Help button

  2. Click “More troubleshooting information”.

    From the Help menu, click on “More troubleshooting information“.
    Click More Troubleshooting Information

  3. Click on “Refresh Firefox”

    When the “Troubleshooting Information” page opens, click on the “Refresh Firefox” button.
    Click on Refresh Firefox

  4. Confirm that you want to reset your browser settings.

    To finish the reset process, click on the “Refresh Firefox” button in the new confirmation window that opens.
    Click again on Refresh Firefox button

  5. Click “Finish”.

    Firefox will now close itself and will revert to its default settings. When it’s done, a window will list the information that was imported. Click on “Finish“.

    Your old Firefox profile will be placed on your desktop in a folder named “Old Firefox Data“. If the reset didn’t fix your problem you can restore some of the information not saved by copying files to the new profile that was created. If you don’t need this folder any longer, you should delete it as it contains sensitive information.

Remove Multicheck Checkbox Checker browser hijacker from Microsoft Edge

To remove the Multicheck Checkbox Checker browser extension from Microsoft Edge we will reset the browser settings to their default. This will reset your startup page, new tab page, search engine, and pinned tabs. It will also disable all extensions and clear temporary data like cookies. Your favorites, history, and saved passwords will not be cleared.

  1. Click the three dots in the top-right corner and then click on “Settings”.

    In the top right corner, click on Microsoft Edge’s main menu button, represented by three horizontal dots. When the drop-down menu appears, click on “Settings“.
    Click the three dots in the top-right corner and then click on Settings

  2. Click on “Reset Settings”.

    On the left side of the window, click on “Reset Settings“.
    Click Reset Settings option

  3. Click on “Restore settings to their default values”.

    In the main window, click on “Restore settings to their default values“.
    Select Restore settings to their default values

  4. Click “Reset”.

    A confirmation dialog should now be displayed, detailing the components that will be restored to their default state should you continue with the reset process. To complete the restoration process, click on the “Reset” button.
    Click Reset to reset your browser
    Microsoft Edge will now erase all your personal data, browsing history, and disable all installed extensions. Your bookmarks, though, will remain intact and still be accessible.

Remove Multicheck Checkbox Checker browser hijacker from Internet Explorer

To remove the Multicheck Checkbox Checker browser extension from Internet Explorer we will reset the browser settings to its default. You can reset Internet Explorer settings to return them to the state they were in when Internet Explorer was first installed on your computer.

  1. Go to “Internet Options”.

    Open Internet Explorer, click on the gear icon in the upper-right part of your browser, then select “Internet Options“.

  2. Select the “Advanced” tab, then click “Reset”

    In the “Internet Options” dialog box, select the “Advanced” tab, then click on the “Reset” button.

  3. Click on “Reset”.

    In the “Reset Internet Explorer settings” section, select the “Delete personal settings” checkbox, then click on the “Reset” button.

  4. Click on “Close”.

    When Internet Explorer has completed its task, click on the “Close” button in the confirmation dialogue box.
    Close your browser and then you can open Internet Explorer again.


Your computer should now be free of the Multicheck Checkbox Checker browser hijacker. If your current antivirus allowed this malicious program on your computer, you may want to consider purchasing Malwarebytes Premium 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 one of the steps:

Remove Multicheck Checkbox Checker from Mac
To remove Multicheck Checkbox Checker from Mac, follow these steps:

STEP 1: Remove malicious Profiles from your Mac

Profiles are used by IT admins in businesses to control the behavior of their Macs. These profiles can configure a Mac to do many different things, some of which are not otherwise possible.
When it comes to home users, adware and browser hijackers are using the configuration profile to prevent users from removing malicious programs from the computer. This also prevents the user from changing that behavior in the browser’s settings.
In this first step, we will check your computer to see if any configuration profiles are installed. To do this, follow the below steps:

  1. Open “System Preferences”

    From the Apple menu, select System Preferences.

  2. Search for “Profiles”

    When the System Preferences window opens, search for the Profiles icon.
    Search for Profiles in System Preferences

    If there isn’t a Profiles icon, you don’t have any profiles installed, which is normal and you can continue with the next steps.
  3. Remove the malicious profiles

    If there’s a Profile icon, click on it and select any suspicious profile that you want to remove, and then press the – (minus) button. Click Remove to remove the profile.
    Remove malicious profiles from your Mac


STEP 2: Remove the malicious programs from Mac

In this second step, we will try to identify and remove any malicious apps and files that might be installed on your computer. Sometimes redirects or adware programs can have usable Uninstall entries that can be used to remove these programs.

  1. Quit the malicious programs

    On the Apple menu bar, in the top-right corner, if you see any unknown or suspicious icon, click on it and then select Quit.

  2. Open “Finder”

    Click the Finder application on your dock.
    Open Finder

  3. Click on “Applications”

    In the Finder left pane, click on “Applications“.
    Click on Applications

  4. Find and remove the malicious app.

    The “Applications” screen will be displayed with a list of all the apps installed on your device. Scroll through the list until you find the malicious app, right-click it, and then click “Move to Trash”.

    Look out for any suspicious program that could be behind all the drama – anything you don’t remember downloading or that doesn’t sound like a genuine program. Here are some known malicious programs: SearchMine, TakeFresh, TopResults, FeedBack, ApplicationEvents, GeneralOpen, PowerLog, MessengerNow, ImagePrime, GeneralNetSearch, Reading Cursors, GlobalTechSearch, PDFOnline-express, See Scenic Elf, MatchKnowledge, Easy Speedtest, or WebDiscover.

    Find malicious programs and Remove It

  5. Click “Empty Trash”

    On the dock, right-click on the trash icon and select “Empty Trash”. Doing so deletes the Trash’s contents, including the program that you just sent to the Trash.
    Empty Trash

  6. Find and remove the malicious files

    • Click the desktop to make sure you’re in the Finder, choose “Go” then click on “Go to Folder“.Go to Folder mac
    • Type or copy/paste each of the below paths into the window that opens, then click Go.
      • /Library/LaunchAgents
      • ~/Library/LaunchAgents
      • /Library/Application Support
      • /Library/LaunchDaemons

      Type the commands in the Go to Folder window

    • Look out for any suspicious files that could be behind all the drama – anything you don’t remember downloading or that doesn’t sound like a genuine program. Here are some known malicious files: Here are some known malicious files: “com.adobe.fpsaud.plist” “installmac.AppRemoval.plist”, “myppes.download.plist”, “mykotlerino.ltvbit.plist”, or “com.myppes.net-preferences.plist”. When you find a malicious file move it to the Trash.

STEP 3: Use Malwarebytes for Mac to remove Multicheck Checkbox Checker browser hijacker

In this third step, we will scan the computer with Malwarebytes for Mac to find and remove any malicious programs that might be installed on your Mac.
Malwarebytes for Mac is an on-demand scanner that can destroy many types of malware that other software tends to miss without costing you absolutely nothing. When it comes to cleaning up an infected device, Malwarebytes has always been free, and we recommend it as an essential tool in the fight against malware.

  1. Download Malwarebytes for Mac.

    You can download Malwarebytes for Mac by clicking the link below.

    MALWAREBYTES FOR MAC DOWNLOAD LINK
    (The above link will open a new page from where you can download Malwarebytes for Mac)
  2. Double-click on the Malwarebytes setup file.

    When Malwarebytes has finished downloading, double-click on the setup file to install Malwarebytes on your computer. In most cases, downloaded files are saved to the Downloads folder.

    Double-click on setup file to install Malwarebytes

  3. Follow the on-screen prompts to install Malwarebytes.

    When the Malwarebytes installation begins, you will see the Malwarebytes for Mac Installer which will guide you through the installation process. Click “Continue“, then keep following the prompts to continue with the installation process.

    Click Continue to install Malwarebytes for Mac

    Click again on Continue to install Malwarebytes for Mac for Mac

    Click Install to install Malwarebytes on Mac

    When your Malwarebytes installation completes, the program opens to the Welcome to Malwarebytes screen. Click the “Get started” button.

  4. Select “Personal Computer” or “Work Computer”.

    The Malwarebytes Welcome screen will first ask you what type of computer are you installing this program, click either Personal Computer or Work Computer.
    Select Personal Computer or Work Computer mac

  5. Click on “Scan”.

    To scan your computer with Malwarebytes, click on the “Scan” button. Malwarebytes for Mac will automatically update the antivirus database and start scanning your computer for Multicheck Checkbox Checker malware.
    Click on Scan button to start a system scan Mac

  6. Wait for the Malwarebytes scan to complete.

    Malwarebytes will scan your computer for the Multicheck Checkbox Checker browser hijacker and other malicious programs. This process can take a few minutes, so we suggest you do something else and periodically check on the status of the scan to see when it is finished.
    Wait for Malwarebytes for Mac to scan for Multicheck Checkbox Checker browser hijacker

  7. Click on “Quarantine”.

    When the scan has been completed, you will be presented with a screen showing the malware infections that Malwarebytes has detected. To remove the Multicheck Checkbox Checker malware that Malwarebytes has found, click on the “Quarantine” button.
    Review the malicious programs and click on Quarantine Multicheck Checkbox Checker browser hijacker

  8. Restart computer.

    Malwarebytes will now remove all the malicious files that it has found. To complete the malware removal process, Malwarebytes may ask you to restart your computer.
    Malwarebytes For Mac requesting to restart computer
    When the malware removal process is complete, you can close Malwarebytes and continue with the rest of the instructions.


STEP 4: Remove Multicheck Checkbox Checker extension from Safari, Chrome, or Firefox

If you are still having problems with the Multicheck Checkbox Checker browser extension browser extension, then you should also reset your browsers back to their default configuration
For each browser that you have installed on your computer, please click on the tab below and follow the displayed steps to reset that browser.

SafariChromeFirefox

Remove Multicheck Checkbox Checker browser hijacker from Safari

To remove Multicheck Checkbox Checker browser hijacker from Safari we will check if there are any malicious extensions installeded on your browser and what settings have been changed by this malicious program.

  1. Go to Safari’s “Preferences”.

    On the menu bar, click the “Safari” menu and select “Preferences”.
    On the Menu bar Click on Safari then Preference

  2. Check Homepage.

    This will open a new window with your Safari preferences, opened to the “General” tab. Some browser hijackers may change your default homepage, so in the Homepage field make sure it’s a web page you want to use as your start-up page.

    Change Homepage in Safari

  3. Click “Extensions”

    Next, click on the “Extensions” tab.
    Click on Extensions MacOS

  4. Find and uninstall Multicheck Checkbox Checker.

    The “Extensions” screen will be displayed with a list of all the extensions installed on Safari. Scroll through the list until you find the “Multicheck Checkbox Checker” extension, and then click on “Uninstall” to remove it.

    Click on Uninstall to remove Multicheck Checkbox Checker

  5. Remove spam notifications ads

    Click Preferences, click Websites, then click Notifications. Deselect “Allow websites to ask for permission to send push notifications”.

    Deselect Allow websites to ask for permission to send push notifications

Remove Multicheck Checkbox Checker browser hijacker from Chrome for Mac

To remove Multicheck Checkbox Checker browser hijacker from Chrome for Mac we will reset the browser settings to its default. Doing these steps will erase all configuration information from Chrome such as your home page, tab settings, saved form information, browsing history, and cookies. This process will also disable any installed extensions. All of your bookmarks, though, will be preserved.

  1. Click on the three dots at the top right and go to Settings.

    Click on Chrome’s main menu button, represented by three dots at the top right corner. Now click on the menu option labeled Settings as shown by the arrow in the picture below, which will open the basic settings screen.
    Click on the Chrome menu button then on the Settings button

  2. In the left sidebar, click on the “Reset and Cleanup” option.

    In the left sidebar, click on “Reset and clean up“.
    Click on Reset and Cleanup

  3. Click “Reset settings to their original defaults”.

    Now click on the “Reset settings to their original defaults”. link as shown in the image below.
     Reset Chrome

  4. Click “Reset Settings” button.

    A confirmation dialog should now be displayed, detailing the components that will be restored to their default state should you continue with the reset process. To complete the restoration process, click on the “Reset Settings” button.
    Confirm Reset Chrome browser

Remove Multicheck Checkbox Checker browser hijacker from Firefox for Mac

To remove Multicheck Checkbox Checker browser hijacker from Firefox for Mac we will reset the browser settings to their default. The reset feature fixes many issues by restoring Firefox to its factory default state while saving your essential information like bookmarks, passwords, web form auto-fill information, browsing history, and open tabs.

  1. Go to the “Help” menu.

    Click on Firefox’s main menu button, represented by three horizontal lines. When the drop-down menu appears, select the option labeled “Help“.
    Image - Click on the Firefox Menu button then select Help

  2. Click “Troubleshooting Information”.

    Next click on the “Troubleshooting Information” option as indicated by the arrow in the image below. This will bring you to a Troubleshooting page.

    Image - Troubleshooting Information option in Firefox Mac

  3. Click on “Refresh Firefox”

    Click the “Refresh Firefox” button in the upper-right corner of the “Troubleshooting Information” page.
    Image - Click on the Refresh Firefox button Mac

  4. Confirm.

    To continue, click on the “Refresh Firefox” button in the new confirmation window that opens.
    Image - Click again on Refresh Firefox button

  5. Click on “Finish”.

    Firefox will close itself and will revert to its default settings. When it’s done, a window will list the information that was imported. Click on the “Finish“.

Your old Firefox profile will be placed on your desktop in a folder named “Old Firefox Data“. If the reset didn’t fix your problem you can restore some of the information not saved by copying files to the new profile that was created. If you don’t need this folder any longer, you should delete it as it contains sensitive information.

Your computer should now be free of the Multicheck Checkbox Checker browser hijacker. If your current antivirus allowed a malicious program on your computer, you might 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 experiencing problems while trying to remove a malicious program from your computer, please ask for help in our Mac Malware Removal Help & Support forum.
How to Stay Safe Online

Here are 10 basic security tips to help you avoid malware and protect your device:

  1. Use a good antivirus and keep it up-to-date.

    Shield Guide

    It's essential to use a good quality antivirus and keep it up-to-date to stay ahead of the latest cyber threats. We are huge fans of Malwarebytes Premium and use it on all of our devices, including Windows and Mac computers as well as our mobile devices. Malwarebytes sits beside your traditional antivirus, filling in any gaps in its defenses, and providing extra protection against sneakier security threats.

  2. Keep software and operating systems up-to-date.

    updates-guide

    Keep your operating system and apps up to date. Whenever an update is released for your device, download and install it right away. These updates often include security fixes, vulnerability patches, and other necessary maintenance.

  3. Be careful when installing programs and apps.

    install guide

    Pay close attention to installation screens and license agreements when installing software. Custom or advanced installation options will often disclose any third-party software that is also being installed. Take great care in every stage of the process and make sure you know what it is you're agreeing to before you click "Next."

  4. Install an ad blocker.

    Ad Blocker

    Use a browser-based content blocker, like AdGuard. Content blockers help stop malicious ads, Trojans, phishing, and other undesirable content that an antivirus product alone may not stop.

  5. Be careful what you download.

    Trojan Horse

    A top goal of cybercriminals is to trick you into downloading malware—programs or apps that carry malware or try to steal information. This malware can be disguised as an app: anything from a popular game to something that checks traffic or the weather.

  6. Be alert for people trying to trick you.

    warning sign

    Whether it's your email, phone, messenger, or other applications, always be alert and on guard for someone trying to trick you into clicking on links or replying to messages. Remember that it's easy to spoof phone numbers, so a familiar name or number doesn't make messages more trustworthy.

  7. Back up your data.

    backup sign

    Back up your data frequently and check that your backup data can be restored. You can do this manually on an external HDD/USB stick, or automatically using backup software. This is also the best way to counter ransomware. Never connect the backup drive to a computer if you suspect that the computer is infected with malware.

  8. Choose strong passwords.

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    Use strong and unique passwords for each of your accounts. Avoid using personal information or easily guessable words in your passwords. Enable two-factor authentication (2FA) on your accounts whenever possible.

  9. Be careful where you click.

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    Be cautious when clicking on links or downloading attachments from unknown sources. These could potentially contain malware or phishing scams.

  10. Don't use pirated software.

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    Avoid using Peer-to-Peer (P2P) file-sharing programs, keygens, cracks, and other pirated software that can often compromise your data, privacy, or both.

To avoid potential dangers on the internet, it's important to follow these 10 basic safety rules. By doing so, you can protect yourself from many of the unpleasant surprises that can arise when using the web.