Remove SmartCheck – Mac Adware

This post explains the risks of installing a malicious browser extension called SmartCheck. Also part of this article are Easy Fix solution, Manual Removal Guide, and cleaning the Homepage and Search section of infected browser application.

Seeing an application named SmartCheck on Mac computer is a sign that there is looming additional threat or privacy theft. It is because SmartCheck is considered as an adware that can deliver aggressive pop-up ads that can point the browser to several suspicious websites that hosts malicious software. Following or accessing those provided links could automatically execute the installation of other adware or malware.

How SmartCheck enters the Mac computer?

One thing that should cause suspicion to Mac users is the tricky infiltration technique that SmartCheck carried out. Usually, questionable browser extension, such as this enters the computer behind the knowledge of the Mac user. By making use of third party applications where SmartCheck is bundled, Mac user may get a hold of this app without full knowledge. Because of this deceitful technique, computer security experts classed SmartCheck under the family of potentially unwanted application (PUA).

Apart from software installers, it was observed that some infection cases of SmartCheck are caused by the installation of the fake software update. This is a type of aggressive advertisements that masks as a system alert. It lures Mac users to download the supposed software update, which in return will install the SmartCheck adware.

Screenshot of SmartCheck App

Is SmartCheck a virus?

SmartCheck app may behave like a computer virus right from the start. It forces an entry into the Mac computer and once it is in, it can produce bunches of annoyances like excessive display of advertisements and redirects. SmartCheck also plays various tricks to sway web users to download and install unwanted programs. But even with attributes, computer security analysts are certain that it is not a computer virus. Viruses are infectious and deadly on the operating system, one characteristic that SmartCheck does not possess. In fact, SmartCheck do not actually infect the computer because Mac user perpetrates its installation by loading a dubious software bundle.

Another thing, SmartCheck app is much easier to deal with as compare to viruses. It can be eliminated with basic virus and malware scanning. Sometimes, it may require manual deletion of associated files and folders. Some may find this procedure confusing, so, we made removal procedures on this page for simple and quick removal of SmartCheck adware.

Procedures to Remove SmartCheck from Mac

This area contains comprehensive procedures to help you remove adware and potentially unwanted program from the computer.

Guide on this page are written in a manner that can be easily understand and execute by Mac users.

Quick Fix - Scan the Mac Computer with Combo Cleaner

Combo Cleaner is a trusted Mac utility application with complete antivirus and optimization features. It is useful in dealing with adware, malware, and PUP's. Moreover, it can get rid of adware like SmartCheck. You may need to purchase full version if you require to maximize its premium features.

1. Download the tool from the following page:

2. Double-click the downloaded file and proceed with the installation.

3. In the opened window, drag and drop the Combo Cleaner icon onto your Applications folder icon.

Install Combo Cleaner

4. Open your Launchpad and click on the Combo Cleaner icon.

5. Wait until antivirus downloads its latest virus definition updates and click on "Start Combo Scan" to start removing SmartCheck.

Combo Cleaner Scanner

6. Free features of Combo Cleaner include Disk Cleaner, Big Files finder, Duplicate files finder, and Uninstaller. To use antivirus and privacy scanner, users have to upgrade to a premium version.

Proceed with the rest of the removal steps if you are comfortable in manually removing malicious objects associated with the threat.

Step 1 : Delete SmartCheck from Mac Applications

1. Go to Finder.

2. On the menu, click Go and then, select Applications from the list to open Applications Folder.

3. Find SmartCheck or any unwanted program.

Delete Unwanted App

4. Drag SmartCheck to Trash Bin to delete the application from Mac.

5. Right-click on Trash icon and click on Empty Trash.

Step 2 : Remove Browser Extensions that belongs to SmartCheck

1. Locate the add-on or extension that is relevant to the adware. To do this, please follow the following depending on affected browser.

Safari - Choose Preferences from the Safari menu, then click the Extensions icon. This will open a window showing all installed extensions.

Chrome - Select Preferences from the Chrome menu, and then click the Extensions link found on the left pane.

Firefox - Choose Add-ons from the Menu. Look at both the Extensions and Plug-ins lists when it opens a new window.

2. Once you have located SmartCheck, click on Remove or Uninstall, to get rid of it.

3. Close the browser and proceed to the next steps.

Step 3 : Delete Malicious Files that have installed SmartCheck

1. Select and copy the string below to your Clipboard by pressing Command + C on your keyboard.

~/Library/LaunchAgents

2. Go to your Finder. From the menu bar please select Go > Go to Folder...

3. Press Command + V on your keyboard to paste the copied string. Press Return to go to the said folder.

Command + V

4. You will now see a folder named LaunchAgents. Take note of the following files inside the folder:

  • com.SmartCheck
  • unknown.download.plist
  • unknown.ltvbit.plist
  • unknown.update.plist

The term unknown is just a representation of the actual malware name. Attackers may masks the actual name with following:

- Smart Check App

If you cannot find the specified file, please look for any unfamiliar or suspicious entries. It may be the one causing SmartCheck to be present on your Mac. Arranging all items to see the most latest ones may also help you identify recently installed unfamiliar files. Please press Option + Command + 4 on your keyboard to arrange the application list in chronological order.

Option+Command+4

Important: Take note of all the suspicious files as you may also delete the same item on another folder as we go on.

5. Drag all suspicious files that you may find to Trash.

6. Please restart the computer.

7. Open another folder using the same method as above. Copy and Paste the following string to easily locate the folder.

~/Library/Application Support

8. Look for any suspicious items that are similar to the ones in Step 4. Drag them to the Trash.

9. Repeat the process on the following non-hidden folders (without ~):

/Library/LaunchAgents
/Library/LaunchDaemons
/Library/Application Support

10. Lastly, go to your Finder and open the Applications Folder. Look for subfolders with the following names and drag them to Trash.

- Smart Check App

Optional : For locked files that cannot be removed, do the following:

1. Go to Launchpad, Utilities folder, open Activity Monitor.

2. Select the process you want to quit.

Force Quit Apps

3. Click on Force Quit button.

4. You may now delete or remove locked files that belongs to SmartCheck adware.

Step 4 : Double-check with MBAM Tool for Mac

1. Download Malwarebytes Anti-malware for Mac from this link:

2. Run Malwarebytes Anti-malware for Mac. It will check for updates and download if most recent version is available. This is necessary in finding recent malware threats including SmartCheck.

3. If it prompts to close all running web browser, please do so. Thus, we advise you to PRINT this guide for your reference before going offline.

4. Once it opens the user interface, please click on Scan button to start scanning your Mac computer.

MBAM for Mac

5. After the scan, Malwarebytes Anti-malware for Mac will display a list of identified threats, SmartCheck is surely part of it. Be sure to select all items in the list. Then, click Remove button to clean the computer.

Step 5 : Remove SmartCheck from Homepage and Search

Safari

- Open your Safari browser.
- Go to Safari Menu located on upper left hand corner, and then select Preferences.
- Under General tab, navigate to Default Search Engine section and select Google or any valid search engine.
- Next, be sure that "New Windows Open With" field is set to Homepage.
- Lastly, remove SmartCheck from the Homepage field. Replace it with your preferred URL to be set as your default homepage.

Google Chrome

- Open Chrome browser.
- Type the following on the address bar and press Enter on keyboard : chrome://settings/
- Look for 'On Startup' area.
- Select 'Open a specific page or set of pages'.
- Click on More Actions and select Edit.
- Enter the desired web address as your home page, replacing SmartCheck. Click Save.
- To set default search engine, go to Search Engine area.
- Click on 'Manage search engines...' button.
- Go to questionable Search Engine. Click on More Actions and Click 'Remove from list'.
- Go back to Search Engine area and choose valid entry from Search engine used in the address bar.

Mozilla Firefox

- Run Mozilla Firefox browser.
- Type the following on the address bar and hit Enter on keyboard : about:preferences
- On Startup area, select 'Show your home page' under 'When Firefox starts' field.
- Under Home Page field, type the desired URL to replace SmartCheck settings.
- To configure default search engine, select Search on left sidebar to display settings.
- Under Default Search Engine list, please select one.
- On the same page, you have an option to Remove unwanted search engine.

Optional : If unable to change browser settings, execute these steps:

Some user complains that there is no way to change browser settings because it is grayed out by SmartCheck. In such situation, it is important to check if there is unwanted profile. Please do the following:

1. Quit any running applications and launch System Preferences from your Dock.

2. Under System Preferences, click Profiles.

3. Select SmartCheck or any relevant profile from the left pane. See image below.

Remove Profile

4. At the bottom of this window, click minus [-] button to delete the account. Please refer to image above.

5. Close the Profiles window and open the affected browser to change all settings associated with SmartCheck.

About the author

Leave a Comment

Your email address will not be published.