E.tre456_worm_osx Mac



E.tre456_worm_osx is known to be a browser hijacker. Numerous complaints about E.tre456_worm_osx include webpage redirects, unwanted advertisements and unapproved changes to the user’s browser.

E.tre456_worm_osx Mac

The E.tre456_worm_osx Virus will display false pop up messages.

An irritating browsing disturbance, caused by a program called E.tre456_worm_osx, is the probable reason that you have landed on this page. This program usually reveals its presence on your computer by imposing certain modifications to your Safari, Chrome, Firefox or any other browser that you are using by default. After it integrates with your system, it may change your browser’s homepage, install a new search engine or a toolbar, initiate frequent page redirects and generate dozens of ads, pop-ups, banners and blinking notifications on your screen. Some people may get really panicked the moment they face these activities, especially because they may not really know the real intentions of the program.

Fortunately, there is no place for panic because such activity is typical for one frequently encountered type of software known as browser hijackers, which are generally not considered harmful. Their behavior is related to the intrusive advertising practices of the online marketing industry and in the next lines, we are going to tell you more about them. We are also going to tell you more about the issues that browser hijackers may cause and will show you how to remove them in case they cause you disturbance. So, take a look at the information in the paragraphs that follow and let us know if they helped you eliminate the browsing disturbance, caused by E.tre456_worm_osx.  

E.tre456_worm_osx targets Safari

Researchers have labeled E.tre456_worm_osx a browser hijacker. Security problems such as E.tre456_worm_osx are known to cause website redirects, intrusive advertisements and even phishing attempts.
The E.tre456_worm_osx Virus will display a fake message claiming you have been infected by a trojan horse and it will look like this:

IMMEDIATE ACTION REQUIRED We have detected a trojan virus (e.tre456_worm_osx) on your mac. Press ok to begin the repair process.

E.tre456_worm_osx is not a virus that needs to be removed but a rather annoying piece of ad-generating software. There are many programs that share the same behavioral patterns of E.tre456_worm_osx and all of them fall into one software category called browser hijackers. The target of such programs is not to cause you some type of harm (the way that some nasty virus, a Trojan or Ransomware infection would do) but to aggressively redirect you to certain sponsored web pages and generate various commercial materials such as ads, pop-ups, banners and intrusive sales offers. Implementing some changes in your default browser is the main way for the browser hijacker to land you on the advertised website or make you click on the sponsored ads. A remuneration model called Pay-Per-Click turns every click into income for the developers of the hijacker and their strive for more money is what justifies the ads disturbance that hijackers like this may cause. That disturbance, however, may seriously interrupt your normal web surfing and may make you really wish to remove the annoying ads and uninstall their source once and for all.

Real viruses like Ransomware, Trojans, Spyware and other harmful infections usually infect you secretly. E.tre456_worm_osx, as well as any browser hijacker in general, cannot do that. This software needs your permission to become part of your system. However, it still has its tricks to make you agree. For instance, most ad-generating programs are often distributed along with some other attractive software, especially free bundles, automatic installers and free new application setups. The moment you download and run such an installer, you may not be clearly notified about the presence of the additionally bundled browser hijacker and may agree on the standard installation option just as you do with any other software. That’s why you need to pay special attention when installing new programs and carefully customize their setup by using the Advanced/Custom/Manual option of the installation wizard instead of the standard/ automatic one.

The E.tre456_worm_osx Virus

E.tre456_worm_osx is regarded as a type of a browser hijacker. Threats like E.tre456_worm_osx are known to cause different problems like changing of the user’s designated home page or even the preferred browser of choice.

We already said that you don’t need to worry about your system’s safety if a program like E.tre456_worm_osx gets installed on it. Browser hijackers, unlike Trojans, Ransomware and other nasty viruses, are usually developed by legitimate software developers and cannot cause any sort of serious system harm or criminal activity. Still, some users may really consider E.tre456_worm_osx as a source of intolerable ads-related disturbance and for this reason, they may wish to remove it from their system.  Replacing your homepage or search engine, exposing you to different intrusive ads and pop-ups, and constantly redirecting you to different pages and making you click on various intrusive ads is indeed activity that could be quite disturbing. More often than not, the browser hijacker may also keep track of your web activity and collect “traffic data” for its advertising purposes. This could also be seen as a form of privacy invasion and a good reason to uninstall the annoying software from your computer.

Fortunately, uninstalling this program is not that difficult. In fact, you don’t really need the help of a specialist to remove the hijacker. All you need is a detailed removal guide like the one below, or the help of a professional removal tool. Both are available here, so we suggest you follow the instructions and delete E.tre456_worm_osx with their help.


Name E.tre456_worm_osx
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Intrusive generation of ads, sudden page redirects, changes in your browser’s homepage or search engine. 
Distribution Method Free software bundles, automatic installers, free online downloads, shareware platforms, torrents, spam messages, ads, pop-ups. 
Detection Tool

Remove E.tre456_worm_osx Mac Virus

E.tre456_worm_osx Mac

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.

E.tre456_worm_osx Mac


Start Activity Monitor by opening up Finder, then proceed to E.tre456_worm_osx Mac

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:

E.tre456_worm_osx Mac

Now click on Sample at the bottom:

E.tre456_worm_osx Mac

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:

E.tre456_worm_osx Mac
Drag and Drop Files Here to Scan
Maximum file size: 128MB.

This scanner is free and will always remain free for our website's users. You can find its full-page version at: https://howtoremove.guide/online-virus-scanner/

Scan Results

Virus Scanner Result
E.tre456_worm_osx MacClamAV
E.tre456_worm_osx MacAVG AV
E.tre456_worm_osx MacMaldet

E.tre456_worm_osx Mac

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.

E.tre456_worm_osx Mac

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,

E.tre456_worm_osx Mac

and then again on the Extensions tab,

E.tre456_worm_osx Mac

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.
E.tre456_worm_osx Mac

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,
E.tre456_worm_osx Mac

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

E.tre456_worm_osx Mac

Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
E.tre456_worm_osx Mac

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

E.tre456_worm_osx Mac How to Remove E.tre456_worm_osx From Firefox in OSX:

Open Firefoxclick on E.tre456_worm_osx Mac (top right) ——-> Add-onsHit Extensions next.

E.tre456_worm_osx Mac

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

E.tre456_worm_osx MacHow to Remove E.tre456_worm_osx From Chrome in OSX:

 Start Chrome, click E.tre456_worm_osx Mac —–>More Tools —–> Extensions. There,  find the malware and  select  E.tre456_worm_osx Mac.

E.tre456_worm_osx Mac

 Click E.tre456_worm_osx Mac again, and proceed to Settings —> Search, the fourth tab, select Manage Search Engines.  Delete everything but the search engines you normally useAfter 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!


About the author


Lidia Howler

Lidia is a web content creator with years of experience in the cyber-security sector. She helps readers with articles on malware removal and online security. Her strive for simplicity and well-researched information provides users with easy-to-follow It-related tips and step-by-step tutorials.

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