Get rid of AssistiveFile from Mac OS

The previously safe Mac system is now becoming the favorite target of several threats including a malware called AssistiveFile. Because sizeable amount of computer users are hook onto this high-end system, there are tailor made threats that is specific to Mac OS and sometimes, the inflicted harm is more dangerous that those targeting other systems.

How AssistiveFile infects Mac

We can compare AssistiveFile app to its previous versions as ValidGeneration, BoostCoordinator, and ConnectionFormat. All of these adware from the same clan usually spreads over the internet while using various deceptive tactics. However, the most effective so far in spreading AssistiveFile or any adware from this group are the following:

Malicious freeware – By embedding AssistiveFile app to different freeware, attackers were able to have a successful sneak-in on Mac computer. Obviously, when Mac user acquires the freeware, they have no clue that AssistiveFile is embedded with it and running the setup would give the malware an elusive path inside the target browser program. In most infection cases, AssistiveFile is attacking the default browser and because Safari is the usual preferences of Mac users, it suffers the most damage from this malware.

Insistent pop-ups – Visiting websites that are involved in the distribution of pirated copies of movies, software, audio files, and other copyrighted objects may give way for aggressive pop-ups to appear on the browser. These sites are commonly employing scripts to kick off the pop-up window that sway visitors to download recommended tools. On most occasions, it asserts that web user should click an object in order to continue browsing the site. Just one click is needed to execute and install AssistiveFile on visitor’s computer.

Misleading advertisements – Makers of AssistiveFile are investing to several ad provider and underground ad networks. Thus, web user may see misleading ads prompting to download necessary software update. At first, the pop-up will insist that Mac user should upgrade an obsolete computer program. However, instead of the software update, the pop-up will install AssistiveFile. This fake software update scheme is becoming the trend these days in distributing malware.

AssistiveFile App

AssistiveFile infection and removal

As soon as AssistiveFile sets foot on the browser and becomes an active component, Mac users are going to witness barrage of advertisements on the browser. Several redirects may happen especially during browsing session and this instance aims to deliver malicious landing page to browser window. With malicious links and harmful elements as the content, a looming malware infection is possible to occur anytime soon.

To avoid the further contamination of Mac device, the removal of AssistiveFile must be executed as soon as possible. Below is our own version of efficient guide to complete the removal of AssistiveFile and any relevant objects that are present on the computer.

Procedures to Remove AssistiveFile 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 System 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 AssistiveFile. 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 AssistiveFile.

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 AssistiveFile 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 AssistiveFile or any unwanted program.

Delete Unwanted App

4. Drag AssistiveFile 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 AssistiveFile

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 AssistiveFile, 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 AssistiveFile

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.AssistiveFile
  • 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:

- ValidGeneration, BoostCoordinator

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

- ValidGeneration, BoostCoordinator

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 AssistiveFile 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 AssistiveFile.

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, AssistiveFile 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 AssistiveFile 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 AssistiveFile 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 AssistiveFile. 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 AssistiveFile 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 AssistiveFile. 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 AssistiveFile 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 AssistiveFile.

Post Last Modified On September 21, 2020

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