Mac Virus

MacPerformance Virus

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading ComboCleaner to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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MacPerformance is an application for Mac which will take control over your browser and make unwanted changes such as setting a different new-tab page. MacPerformance does this without asking for permission and therefore it is deemed a browser hijacker.


The MacPerformance Virus will interfere with your browser.

Annoying browser adverts and page redirects are an issue a lot of you might be currently be struggling with. Of course, there are simply some sites out there that are filled with commercial materials and the only things you could do to deal with that is to either not visit the sites any more or to get an ad-blocker that should stop the majority of adverts that get spammed on your screen. However, here, we aren’t going to be focusing on this type of adverts generated by websites. Here, we will tell you about ads generated by browser hijackers since those tend to be quite more irritating and difficult to deal with. A browser hijacker, for those of you who are not familiar with the term, is an app that “targets” popular browsers like Safari, Firefox and Chrome and which can change their homepage, search engine tool, toolbar settings, buttons as well as other components of the browser. Usually, the changes are supposedly made in order to enhance your browsing experience – the new search engine is supposed to be better optimized, the new homepage address should add new functions to your browser and the same should apply to all other changes that a hijacker may make to your browser. However, the truth is that, in almost all instances, the modifications that such an app may impose on your browser would be unwanted and would also likely take place without your direct approval. In addition to that, a hijacker app will probably also spam you with nagging ads, banners, page redirects, blinking boxes, promotional links and so on. Here, we will give you an example with the recently reported MacPerformance browser component which seems to display many traits typical for a hijacker. If you have come to this page because of an issue related to MacPerformance, the guide below will help you take care of it.

What is МacPerformance?

MacPerformance is recognised as a browser hijacker for Mac OS. MacPerformance is created to collect data based on your online habbits, and then sell it to advertisers.

Though not a Trojan or a Ransomware or some other nasty piece of malware, MacPerformance is also not the most desirable software app you can have on your computer and this is why we advise you to take it away as soon as you can using the removal guide that we’ve just shown you or the automatic removal program we have included in it. Hijackers like MacPerformance are not only irritating but they could also, at times, be potentially hazardous. What we mean by that isn’t that the nagging app will try to harm your PC or mess with any data on your hard-drives but it may still expose you to certain risks with its ads and redirects to random web locations.

The МacPerformance Virus

MacPerformance is known to be a browser hijacker. Numerous complaints about MacPerformance include webpage redirects, unwanted advertisements and unapproved changes to the user’s browser.

As you probably know, nasty viruses and malware programs like Ransomware, Spyware, Worms and so on can get distributed through different shady ads and since MacPerformance is likely going to spam you with an uncontrolled stream of advertisements, it’s simply safe if you remove it altogether to avoid any risks. Also, be sure to be careful in the future with regards to what you download on your PC – not everything on the Internet is reliable and safe.


Name MacPerformance
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Hijacker symptoms normally include nagging ads on your screen during browsing time as well as different modifications made to your browse without your permission.
Distribution Method Normally, the method used for hijacker distribution is the so-called file bundling but other ones such as spam messages and misleading web requests could also be employed.
Detection Tool

Remove MacPerformance Virus


We get asked this a lot, so we are putting it here: Removing parasite manually may take hours and damage your system in the process. We recommend downloading ComboCleaner to see if it can detect parasite files for you.

The first thing you need to do is to Quit Safari (if it is opened). If you have trouble closing it normally, you may need to Force Quit Safari:

You can choose the Apple menu and click on Force Quit.

Alternatively you can simultaneously press (the Command key situated next to the space bar), Option (the key right next to it) and Escape (the key located at the upper left corner of your keyboard).

If you have done it right a dialog box titled Force Quit Applications will open up.

In this new dialog window select Safari, then press the Force Quit button, then confirm with Force Quit again.

Close the dialog box/window.



To remove parasite on your own, you may have to meddle with system files and registries. If you were to do this, you need to be extremely careful, because you may damage your system.

If you want to avoid the risk, we recommend downloading ComboCleaner
a professional malware removal tool.

More information on ComboCleaner, steps to uninstallEULA, and Privacy Policy.

Start Activity Monitor by opening up Finder, then proceed to activity-monitor

Once there, look at all the processes: if you believe any of them are hijacking your results, or are part of the problem, highlight the process with your mouse, then click the “i” button at the top. This will open up the following box:


Now click on Sample at the bottom:


Do this for all processes you believe are part of the threat, and run any suspicious files in our online virus scanner, then delete the malicious files:

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Maximum file size: 128MB.

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Scan Results

Virus Scanner Result


The next step is to safely launch Safari again. Press and hold the Shift key while relaunching Safari. This will prevent Safari’s previously opened pages from loading again. Once Safari is opened up, you can release the Shift key.

On the off chance that you are still having trouble with scripts interrupting the closing of unwanted pages in Safari, you may need to take some additional measures.

First, Force Quit Safari again.

Now if you are using a Wi-Fi connection turn it off by selecting Wi-Fi off in you Mac’s Menu. If you are using a cable internet (Ethernet connection), disconnect the Ethernet cable.


Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,

Preferences in Safari

and then again on the Extensions tab,

extensions in safari

Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.

The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.

Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
Privacy in Safari

Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.

Still in the Preferences menu, hit the General tab

General Tab in Safari

Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
Default Home Page

Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.

firefox-512 How to Remove MacPerformance From Firefox in OSX:

Open Firefoxclick on mozilla menu (top right) ——-> Add-onsHit Extensions next.

pic 6

The problem should be lurking somewhere around here –  Remove it. Then Refresh Your Firefox Settings.

chrome-logo-transparent-backgroundHow to Remove MacPerformance From Chrome in OSX:

 Start Chrome, click chrome menu icon —–>More Tools —–> Extensions. There,  find the malware and  select  chrome-trash-icon.

pic 8

 Click chrome menu icon again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally use. After that Reset Your Chrome Settings.

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