Mac Virus

Mchlpr Mac

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Mchlpr is regarded as a type of a browser hijacker. Threats like Mchlpr are known to cause different problems like changing of the user’s designated home page or even the preferred browser of choice.


The Mchlpr Malware will display this message.

Hijacker software tools might oftentimes initially appear to be useful programs/add-ons for your browsing programs but the reality of things is that you would likely not enjoy the presence of such an app on your computer and inside your browser. The main reason for this to be so is the annoyance that most browser hijackers are known to bring to the users. A typical hijacker app like Mchlpr – the one we are going to be focusing throughout most of this article, can typically attach itself to your main browser regardless of what that browser actually is. Usually, some of the more common targets of hijackers are browsing programs like Chrome or Firefox since people use them the most but other less commonly used browsers could also get affected by hijackers and have their search engines and homepages altered and users might start to get page redirects and ads on their screens during browsing time.

Mchlpr is on Mac

Mchlpr is a browser hijacker type of a security nuisance. Mchlpr is categorized by the website redirects and pop-up ads it causes but it could potentially lead to even more serious problems.

It’s precisely those ads and redirects that are the main reason for the PUP status of most (if not all) of the hijacker apps. PUP basically stands for a potentially unwanted program and this term nicely fits the characteristics and nature of most hijacker like Mchlpr. You see, they can’t be called viruses since they are normally not all that dangerous and their purposes are typically not related to some sort of software crimes which is the main difference between them and malicious threats like Trojan Horse infections, viruses and Ransomware.

The Mchlpr Malware

Mchlpr is categorized as a browser hijacker by security experts. Mchlpr is known to cause browser redirects and different pop-up advertisements in addition to security vulnerabilities.

Make no mistake, though – the hijacker apps are still rather undesirable and, on top of that, quite tricky to eliminate. Here, however, we have some good news for you if you have the irritating Mchlpr hijacker on your PC and would like to uninstall it. The guide available below will show you exactly what needs to be done in order for the pesky piece of software to get removed from any machine:

“Mchlpr” will damage your computer

Researchers have labeled Mchlpr a browser hijacker. Security problems such as Mchlpr are known to cause website redirects, intrusive advertisements and even phishing attempts.

Now, some browser add-ons or similar browser components can actually be somewhere in between useful and unwanted because they might show you annoying ads and make undesirable changes to your browser but they might also still provide you with some useful feature. In such cases, it is up to you to decide if you should keep or remove the hijacker. However, we must tell you something about the potential risks of keeping a piece of software, such as Mchlpr, Hipradc or Pronto App that aggressively tries to advertise stuff on your computer. Not all web ads are safe – many are in fact used for distribution of Ransomware cryptoviruses, Worms, Rootkits and other similar nasty infections and the fact that a certain app on your PC is drastically increasing the number of advertisements you see on your screen can oftentimes also increase the risk of having your machine’s security compromised. This is the reason why most experts advise that any hijackers or similar apps get removed from a given computer. Also, it’s important to remember to stay away from sketchy sites and to make sure to only download quality software from reliable sources if you want to avoid browser hijackers like Mchlpr in the future.


Name Mchlpr
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  A typical symptom of a hijacker are the changes to your browser search engine and/or homepage.
Distribution Method File-bundling the hijacker with some other program seems to be the most commonly used method.
Detection Tool

Mchlpr Malware Removal


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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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 Mchlpr 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 Mchlpr 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.

If the guide doesn’t help, download the anti-virus program we recommended or try our free online virus scanner. Also, you can always ask us in the comments for help!

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