Open4u.co.uk Ads Virus. How to delete?

Written by Valdis Koks

Open4u.co.uk search hijacker is a sort of malware that squeezes into your system, and then switches the search engine configurations in your internet browser to one which it desires. It additionally makes some undesirable changes that can lead to personal information leakages, as well as to other malware injection. In this post, you will read the guideline of Open4u.co.uk hijacker clearing in various options, as well as also the method of making your web browser as good as new.

icon hijacker - Do I really need it?

Open4u.co.uk Info

Name Open4u.co.uk extension
Type Browser hijacker1
Short Description The unwanted software that amends important browser settings without the user’s permission.
Symptoms The Open4u.co.uk hijacker replaces the browser parameters set by the users and replaces these settings with its own values.
Distribution Method Bundling with Freeware or Shareware, misleading pop-up ads produced by adware.
Detection Tool Inspect If Your System Has Been Affected by the Open4u.co.uk hijacker.

The ways of injection of Open4u.co.uk search hijackers are different. Many of them belong to the malware spreading through the malvertising or evil-minded web links of various sites. Occasionally, your system can be infected with this virus with the trojan-downloader, which is used to disperse various other malware. There is a single kind of this unwanted program – web browser plugin that can build right into any kind of internet browser which supports the add-on installment2.

You will not likely mount this plugin on your own, due to the fact that their names are quite suspicious, and also the functionality is really debatable. The “creators” of Open4u.co.uk hijacker normally mention that it can save the .doc/.docx documents from the web pages already to .pdf format, or to save the whole web site on your disk. It is really hard to imagine if somebody may be needed in such operations in 2022, when the Web access is not time-limited and every computer is able to start the needed .docx documents at Google Docs.

Nonetheless, besides their uselessness, they can easily be spotted in the Chrome Web Store. Certainly, virus experts sound the alarm about such spam into the legitimate source of web browser extensions, calling for the Google reaction – removing these extensions from their place. But they are still not hurrying to take care of that security problem.

Icon - Your PC hijacker

Is the Open4u.co.uk virus?

At the first blush, you can believe that these redirects are only aggravating, but not risky. Because of this factor a lot of people are simply playing for time instead of eliminating this malware, getting more and more possibilities of being infected with different other malware, which are much more severe than Open4u.co.uk is.

Besides the altered search engine or search results, you may also see different advertisements even on those websites that do not have any kind of advertisements on it by default. And you may just misclick while closing the promotion, and start the downloading of an unrecognized file, which can be a malware, or a potentially undesirable application, or even ransomware – whatever the maintainers of this hijacker want.

If your browser is damaged as a result of the Azorult trojan task, the system may start malfunctioning soon – this symptome is among the most usual in case of trojan penetration.

Icon - remove Open4u.co.uk hijacker

How to remove Open4u.co.uk?

First, let me say several words about prevention the Open4u.co.uk malware infiltration. It is extremely easy to refer to the options of protecting your PC from such irritating things as browser hijackers, however, it is very simple to be caught on this bait even being a qualified user. As it was stated above, this malware may hide after the eye-catching (at the first sight) ad, or in packs with other adware you may get in dozens of means. But regardless of the typical intricacy of the penetration methods, it is very simple to stay away from the Open4u.co.uk hijacker appearance in your system:

  • Do not follow the dubious links;
  • Restrict the usage of pseudo-free software (one which is offered as free, but has an additional unwanted programs in its pack);
  • Leave the habit of clicking advertisements on the web. If you need to buy something, it is better to google it;
  • Avoid downloading the files from dubious sources, like forums or file sharing websites.

Preparation before removing Open4u.co.uk.

Before starting the actual uninstall procedure, we recommend that you do the following introductory milestones.

  • Ensure you have this hand-operated tutorial always prepared to use.
  • Perform a backup of all of your information, consisting of the saved logins, passwords and other credentials. You must back up your information with a cloud back-up service and also make sure your files are protected from any kind of type of loss, even from the most serious infections.
  • Wait up until the durable back-up procedure mores than.

Step 1: Uninstall Open4u.co.uk and related software from Windows

Right here is a method in couple of simple steps that should have the ability to uninstall most applications. Either you use Windows 10, 8, 7, Vista or XP, these milestones will work well. Moving the app or its folder to the Trash can be a very wrong idea. In case you do that, remnants of the app may remain, and that can cause the unstable performance of your system, malfunctions with the file type associations and other unpleasant behavior. The effective solution to get an app off your device is to remove it manually. To do that:

1. Keep holding the Windows Logo Button and “R” on your keyboard. A Pop-up window will soon arrive.

Windows keyboard R

2. In the field that appeared, type in “appwiz.cpl” -1  and choose OK – 2.

Run appwiz.cpl

 

3. This will open a window with all the apps available on the device. Choose the app that you want to get rid of, then choose “Uninstall

Follow the steps above and you will successfully get rid of most unwanted apps.

Step 2: Get rid of Open4u.co.uk from all your available browsers.

Mozilla FirefoxGoogle ChromeInternet ExplorerMicrosoft Edge

1. Launch Mozilla Firefox. Go to its menu window

2. Choose the “Add-ons” icon in the menu.

3. Find the unwanted extension and select “Remove

Mozilla Firefox Add-ons Remove

4. Upon deleting the extension, reload Mozilla Firefox, closing it with the help of a red “X” button in the upper right corner and start it again.

1. Launch Google Chrome and go to its drop menu

Google Chrome drop menu click

2. Click on “Tools” and then in the extended menu select “Extensions

Google Chrome Tools select Extensions

3. In the “Extensions” menu find the unwanted extension and apply the “Remove” button related to it.

Google Chrome Extensions Remove

4. As soon as the extension is deleted, reload Google Chrome by closing it by means of the red “X” button at the top right corner and launch it again.

1. Launch Internet Explorer

2. Click on the gear icon marked ‘Tools’ to open the drop menu and choose ‘Manage Add-ons’

Manage-add-ons

3. In the “Manage Add-ons” window, locate the extension you want to delete and then click “Remove”. A pop-up window will come up to inform you that you are about to delete the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and choose “Remove”.

Internet Explorer extension removal

4. Once the unwanted extension is deleted, reload Internet Explorer by shutting it down from the red “X” button located at the top right corner and launch it again.

1. Launch Edge

2. Access the drop menu by clicking on the icon at the top right corner.

3. From the drop menu choose “Extensions”.

Microsoft Edge menu Extensions

4. Locate the suspected dangerous extension you want to delete and then click on the Remove button.

Microsoft Edge Extensions Remove

Step 3: Clean any registries that could be added by Open4u.co.uk on your device.

The usually attacked registries of Windows machines are the following:

  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
  • HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
  • HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce

You can access them by going to the Windows registry editor and getting rid of any values added by Open4u.co.uk. Follow the steps below:

  1. Start the Run Window command once again, type “regedit” and click OK.Window command regedit
  2. As soon as you open it, you can freely go to the Run and RunOnce keys, whose locations are displayed above.Window command Run and RunOnce keys
  3. You can delete the value of the virus by right-clicking on it and deleting it.Window command regedit delete the value virus

Tip: To locate a virus-created value, you can right-click on it and select “Modify” to find which file it is set to run. If this is the malware file location, delete the value.

Step 4: Scan for Open4u.co.uk with Loaris Trojan Remover

1. Click on the “Download” button to proceed to Loaris Trojan Remover download.

It is recommended to run a scan before purchasing the full version of the software to make sure that the current version of the malware can be detected by Trojan Remover. Click on the corresponding links to check License AgreementPrivacy Policy.

2. Click “Install” to start.

Loaris Trojan Remover Install

There were 4 scan types suggested:

  • Standard Scan.
  • Full Scan.
  • Custom Scan.
  • Removable Scan.

 

3. After the installed has finished, click on the ‘Scan’ tab. Click on ‘Full Scan’.

Loaris Trojan Remover Full Scan

4. Once the scanning is started, Loaris will initiate the thorough analysis of your device and may soon identify specific threats currently slowing down the performance of your system. Make sure to wait until the scanning is completed to let the software fully evaluate the safety of your workstation.

Loaris Trojan Remover - scan in process

5. After Loaris Trojan Remover has finished scanning your PC for any files of the associated threat and found them, you can try to get them removed automatically and permanently by clicking on the ‘Apply’ button. There were options to move the files to quarantine, ignore or delete them.

Loaris Trojan Remover - show viruses

If any threats have been removed, it is highly recommended to restart your PC.

 

  1. About browser hijackers on Wikipedia
  2. Possible danger of free browser extensions

About the author

Valdis Koks

Security engineer, reverse engineering and memory forensics

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