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E.tre456_worm_windows Virus Removal (June 2019 Update)

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This page aims to help you remove E.tre456_worm_windows Virus. Our removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

It is impossible not to notice the presence of a browser hijacker on your system. This type of software, unlike the stealthy viruses such as Ransomware or Trojan Horses, tries to make its presence clear in the most obvious and annoying manner. Such software will most probably take over your Chrome, Firefox or Internet Explorer browser and will make some changes to its homepage settings, search engine tools, toolbars or to its extensions’ configuration. Then it will start to redirect your web searches to various promotional sites, platforms, and links. You may notice an unusually high amount of different ads, pop-ups, banners and blinking boxes on your screen as well as hard-to-remove messages that may prompt you to click on them. These are all sure signs that your default browser might have been hijacked by an irritating browser hijacker piece of software.

A recently reported application which seems to be terrorizing the web users in the above-mentioned way is the so-called E.tre456_worm_windows. In case that this particular hijacker has nested itself on your system, you might have realized that getting rid of its ads, the page-redirects and the browser changes is not that easy. Uninstalling this type of software and removing its ad-generating settings usually requires the assistance of a professional removal tool or a manual removal guide. Luckily, you have come to the right page because here we have exactly what you might be looking for. Our “How to remove” team has prepared a detailed guide with step-by-step instructions, which you can use to get rid of the ads and their source.

How can a browser hijacker affect the system?

Many users who face applications such as E.tre456_worm_windows for the first time do not know what to expect from this software. Is it as harmful as a Ransomware or as a Trojan Horse infection? Can it put the system in danger? What activities may it launch? Well, browser hijackers, in general, do not represent a serious system threat. They are not identical to the computer viruses in terms of purpose and maliciousness and they don’t have the capacity to initiate criminal actions.Therefore, you should not get too stressed if an application like E.tre456_worm_windows gets installed on your machine. Still, many reputed security experts classify such applications as potentially unwanted and usually advise the web users to have them uninstalled.

E.tre456_worm_windows Virus Removal

If you have a Windows virus, continue with the guide below.

If you have a Mac virus, please use our How to remove Ads on Mac guide.

If you have an Android virus, please use our Android Malware Removal guide.

If you have an iPhone virus, please use our iPhone Virus Removal guide


Some of the steps will likely require you to exit the page. Bookmark it for later reference.

Reboot in Safe Mode (use this guide if you don’t know how to do it).



Press CTRL + SHIFT + ESC at the same time and go to the Processes Tab (the “Details” Tab on Win 8 and 10). Try to determine which processes are dangerous. 


Right click on each of them and select Open File Location. Then scan the files with our free online virus scanner:

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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:

Scan Results

Virus Scanner Result

After you open their folder, end the processes that are infected, then delete their folders. 

Note: If you are sure something is part of the infection – delete it, even if the scanner doesn’t flag it. No anti-virus program can detect all infections. 


Hold together the Start Key and R. Type appwiz.cpl –> OK.


You are now in the Control Panel. Look for suspicious entries. Uninstall it/them.

Type msconfig in the search field and hit enter. A window will pop-up:


Startup —> Uncheck entries that have “Unknown” as Manufacturer or otherwise look suspicious.


Hold the Start Key and R –  copy + paste the following and click OK:

notepad %windir%/system32/Drivers/etc/hosts

A new file will open. If you are hacked, there will be a bunch of other IPs connected to you at the bottom. Look at the image below:

hosts_opt (1)

If there are suspicious IPs below “Localhost” – write to us in the comments.

Open the start menu and search for Network Connections (On Windows 10 you just write it after clicking the Windows button), press enter.

  1. Right-click on the Network Adapter you are using —> Properties —> Internet Protocol Version 4 (ICP/IP), click  Properties.
  2. The DNS line should be set to Obtain DNS server automatically. If it is not, set it yourself.
  3. Click on Advanced —> the DNS tab. Remove everything here (if there is something) —> OK.



  • After you complete this step, the threat will be gone from your browsers. Finish the next step as well or it may reappear on a system reboot.

Right click on the browser’s shortcut —> Properties.

NOTE: We are showing Google Chrome, but you can do this for Firefox and IE (or Edge).


Properties —–> Shortcut. In Target, remove everything after .exe.

ie9-10_512x512  Remove E.tre456_worm_windows from Internet Explorer:

Open IE, click  IE GEAR —–> Manage Add-ons.

pic 3

Find the threat —> Disable. Go to IE GEAR —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

firefox-512 Remove E.tre456_worm_windows from Firefox:

Open Firefoxclick  mozilla menu  ——-> Add-ons —-> Extensions.

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove E.tre456_worm_windows from Chrome:

Close Chrome. Navigate to:

 C:/Users/!!!!USER NAME!!!!/AppData/Local/Google/Chrome/User Data. There is a Folder called “Default” inside:

Rename the Folder to Backup Default

Rename it to Backup Default. Restart Chrome.


Type Regedit in the windows search field and press Enter.

Inside, press CTRL and F together and type the threat’s Name. Right click and delete any entries you find with a similar name. If they don’t show up this way, go manually to these directories and delete/uninstall them:

  • HKEY_CURRENT_USER—-Software—–Random Directory. It could be any one of them – ask us if you can’t discern which ones are malicious.
    HKEY_CURRENT_USER—-Software—Microsoft—-Windows—CurrentVersion—Run– Random
    HKEY_CURRENT_USER—-Software—Microsoft—Internet Explorer—-Main—- Random

The basic idea behind such an invasive monitoring practice is to collect the so-called “traffic data” from the users. This data is non-personal and is needed for an aggressive online advertising method known as Pay-Per-Click which is related to sponsored ads positioning on the screen. Assuming that ads related to the users’ recent searches would have a higher chance of getting clicked, the idea is to involve more people into clicking on the displayed popping messages. This, in turn, can generate Pay-Per-Click profits for the owners of the hijacker and can bring more traffic and exposure to the sites, products, and services, which have been promoted. There is usually nothing illegal or criminal in such practices because, as you can see, this is all solely advertising-oriented.

However, some users find it really unpleasant to have these ad-generating, data-collecting and page-redirecting processes running in the background of their systems every time they try to browse. Not to mention that, in most of the cases, neither these processes nor the installation of the hijacker and its components have been knowingly approved by the users. The software usually uses the method of “software bundling” to get installed on the system by default and typically comes along with the installer of other programs, free tools, and add-ons. Additionally, in its attempts to promote more items, the browser hijacker may take up a fair share of the system’s resources for its activities. This may contribute to a significant slowdown of the system and unresponsiveness of the affected browser. As a result, in the long run, it may really become a nuisance to surf the web which is a good reason to remove this software.


Name E.tre456_worm_windows
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Changes in the homepage of your browser, installation of new toolbars, search engines or add-ons. 
Distribution Method The most common source is program bundles, but different spam messages, free download links, automatic installers and torrents may also deliver this software. 
Detection Tool

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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