Remove MasterInput (Mac Adware)

For internet browser applications running in a Mac OS environment, there is a suspicious extension called MasterInput. This is classified as harmful software and falls into the category of potentially unwanted programs (PUP). Mac users should take all necessary precautions to stop this browser extension from causing additional damage, and fast removal is important. Mac OS may periodically give a pop-up warning stating “MasterInput will damage your computer” if the internet browser app is infected with this adware.

The MasterInput infection

Almost all harmful programs (including AbsoluteBound, FeatureService and NetworkSource), gain access to Mac computers with the aid of shady software installers. Most often, when an infection occurs, MasterInput is incorporated inside a free program that a Mac user obtained from an unreliable source. When the setup procedure begins, MasterInput also joins in full secrecy. The installation of freeware is all that is visible on the screen, which gives Mac users some peace of mind that it is safe and legitimate.

Malicious ad campaigns are another strategy used by the majority of adware developers to infiltrate Mac computers. An advertisement for MasterInput as a browser improvement tool may occasionally be seen by online users while they are browsing the internet. It promises to enhance Mac users’ online browsing and searching experiences. A variety of alluring messages could be used in the pop-up to entice website visitors to download and install MasterInput. On the darker side, the developers of this PUP also use extremely deceptive strategies like fabricating the advertising to look like system alerts. This ruse of pop-up ads typically identifies outdated software that has to be changed with a more recent version. MasterInput will be installed on the computer as soon as the Mac user agrees to this fake software update, not the genuine update.

Screenshot of MasterInput App

This means that MasterInput is already a process that runs undetected on Mac devices and that removal may be rather challenging. When MasterInput is active in the browser, Mac OS will frequently observe pop-up alerts warnings about the existence of the threat.

Ways to remove MasterInput

It is clear that the installed questionable browser extension is relevant to the procedure MasterInput. Therefore, Mac users should first concentrate on getting rid of this PUA. Adware and hidden processes on Mac computers are likely to be removed if the computer is scanned with a reliable and effective anti-malware tool.

Avoid MasterInput Infection

Avoiding dangerous websites, particularly Torrents and dubious file-sharing networks, is an excellent place to start if you want to keep Macs free of adware and malware attacks. There is, however, no better way to safeguard the computer than by using a reliable anti-virus or anti-malware program. This trustworthy security program helps protect Mac against internet malware attacks in addition to uninstalling MasterInput.

Procedures to Remove MasterInput 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 MasterInput. 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 MasterInput.

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 MasterInput 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 MasterInput or any unwanted program or suspicious item. It could be in disguise as a different file.

Delete Unwanted App

4. Drag MasterInput 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 MasterInput

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 MasterInput, 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 MasterInput

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.MasterInput
  • 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:

- Master Input App

If you cannot find the specified file, please look for any unfamiliar or suspicious entries. It may be the one causing MasterInput 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.

- Master Input 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 MasterInput 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 MasterInput.

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, MasterInput 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 MasterInput 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 MasterInput 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 MasterInput. 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 MasterInput 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 MasterInput. 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 MasterInput 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 MasterInput.

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