Home » New Virus » How to Remove Couponizer (Mac OS X)

Couponizer falls in the category of adware which is a Macintosh-based program that issues too many pop-up advertisements once it gets installed on your machine. This program misleads the users by claiming that it will give them easy access to coupon codes, deals, special discounts, and online offers. Initially, user may find this program really appealing, but it seems very annoying once it starts showing never-ending advertisements and bogging down the performance of the computer while inside Mac computer.

Unlike other potentially unwanted program (PUP), freeware and third-party applications that you download off of the internet may be an accessory for the potential  distribution of Couponizer. Bogus software update, download manager, free tools, games, media players are other types of freeware which have profound connection with most adware programs including Couponizer.

Once Couponizer gets installed inside your computer, this program employs a content-layering technique to issue and display coupons, pop-up ads, banners, and other marketing materials on browser’s web page and it feels like these virtual layers of advertisement are the part of the web page. However, in fact, these ads are coming from Couponizer. It supersedes some areas of the original content and thus shows unwanted ads as legitimate so that users can click on them.


Couponizer initiated advertisements and other unwanted programs may be dangerous because they are using suspicious network of advertisers, which are not regulated. These ads, deals, and coupons may include malicious links which may deliver viruses, malware, and other such infections onto user’s computer. As of now, Couponizer is compatible with Mac OS X system only and it affects Safari and Google Chrome browsers. However, as its website states, soon you may find it available for Windows and Mobile version also.

How to Remove Couponizer Adware from Mac

This guide includes the simple steps to remove Couponizer from Macintosh system as well as Safari and Mozilla Firefox, Google Chrome browser. To effectively get rid of this malware, it is suggested to you that carry out all the steps in the same order as they are given.

Step 1: Remove Browser Extensions that belongs to Couponizer

  1. Find the add-on or extension relevant to the Couponizer and SoftwareUpdater adware. To locate these add-ons and extensions, follow the following instruction given below as per the affected browser.

Safari – Open the Safari browser, click on the Safari menu, select Preferences, and then click the Extensions icon. This will show a window listing all installed extensions.

Chrome – Open the Chrome browser, click on the Chrome menu, choose Preferences, and then click the Extensions link you see on the left pane.

Firefox – Open the Firefox browser, click on the Tools menu and Select Add-ons. You will see a new window, look at both the Extensions and Plugins lists there.

  1. Once you have located Couponizer, to get rid of it, click on Remove or Uninstall.
  2. Then close the browser and supersede to the next steps.

Step 2: Delete Malicious Files and Programs that have installed Couponizer

  1. By pressing Command + C on your keyboard, select and copy the string written below to your Clipboard.


  1. Go to your Finder, select Go from the menu bar and then Go to Folder…
  2. To paste the copied string, press Command + V on your keyboard. To go to the said folder, press Return.
  3. Now, you will see a folder named LaunchAgents. Inside that folder, take note of the following files:
  • Couponizer.agent
  • Software-Updater.agent

Look for any unfamiliar or suspicious entries if you cannot find the specified file because unfamiliar or suspicious files present on your computer may be causing the Couponizer to be present on your Mac. Arrange all items to find out which unfamiliar files and programs you have installed recently. To arrange the application list in chronological order, press Option + Command + 4 on your keyboard.

  1. All the suspicious files that you found, drag them to Drag them to Trash.
  2. Repeat Step 2, numbers 1-5 instructions on the following folder (without ~):


  1. Now restart the computer.
  2. Using the same method as above, open another folder. To easily locate the folder, Copy and Paste the following string.

~/Library/Application Support

  1. Locate any suspicious items similar to the ones in Step2, number 4 and drag them to the Trash.
  2. Go to your Finder, open the Applications Folder, and look for subfolders with the Couponizer or MediaDownloader or Software-Updater names and drag them to Trash.

Optional: Do the following for locked files that cannot be removed:

  1. Go to Launchpad, Utilities folder, and Activity Monitor.
  2. Choose the process you want to quit.
  3. Click on Force Quit button.
  4. Now you may remove or delete locked files that belong to Couponizer.

Step 3: Scan the System with defencebyte AV Pro for Mac

  • Download and install the defencebyte AV Pro on your device.
  • Save the file at a convenient location on the desktop from where you can access it easily.
  • Once the download is completed, installation screen will prompt you about that
  • Click on Run button or browse the location of the folder to run the program.
  • To carry on the remaining process, accept the license terms and follow onscreen instructions.
  • To find plug-ins, add-ons, harmful programs, and other malicious entities linked to Couponizer, run a scan on your machine.
  • Follow the on-screen instructions to carry on with removal process.
  • Reboot your system for everything to take effect once the removal process gets completed

Step 4: Remove Couponizer from Safari Home Page and Search

  1. Open Apple menu and choose Force Quit. Alternatively, to access this feature, press Command + Option + Esc on the keyboard.
  2. Choose Safari from the list of applications and then click on Force Quit button. Wait for a while until Safari browser gets closed.
  3. Now, hold down Shift key and launch Safari. Do this to avoid opening any unwanted window from Couponizer.
  4. On upper left hand corner, there is Safari Menu, go there, and then choose Preferences.
  5. Under General tab, enter the desired URL on Home Page area.
  6. Go back to Safari Preferences to set the default search engine.

7. To override Couponizer custom search engine, click on Search and choose the desired search engine from the list.