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Bookness Virus Removal (for Chrome/FF/IE)

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

Browser hijackers aren’t really fun to deal with, but every now and then they seem to find their way into our computers. One of the latest variants of this type is called Bookness Virus and it will be the topic of our article today. Just like other programs of this type, Bookness Virus will change your browser’s homepage and will set its own search engine as the default one. On top of that, you are likely to experience frequent page redirects during the time that this hijacker is on your PC. And if you’re wondering what kind of browser it is that a browser hijacker might be more prone to invade – pretty much all of the most popular ones can become infected. So it doesn’t matter, whether you’re using Chrome, Firefox, Edge, Opera or a different one. You will also not be able to restore the settings of your browser to the state they were in prior to the infection. That you will only be able to do as soon as you remove the hijacker from your PC. And that is where we come in – we are offering you a detailed removal guide, which will help you locate and uninstall Bookness Virus from your system. But before you head over to the guide, do read through the article here first.

The purpose of Bookness Virus and how risky it can be for you

Browser hijackers basically exist for the single purpose of generating and displaying numerous online ads. Such are, for example, popups, banners, box messages and in-text links. We’re sure you’ve already seen plenty of them on your screen and they have by now also probably driven you nuts. Well, the producers and vendors of the various products and services that are being promoted by those ads actually pay the browser hijacker developers for that. Only that happens in a fairly interesting way. The developers earn revenue based on the number of clicks their ads collect from users just like yourself. This happens in accordance with remuneration models like the infamous Pay Per Click scheme or PPC.

However, this very remuneration system is what dictates the aggression with which the ads are basically shoved in the users’ faces. But aside from the blatant aggression, there’s also something else that the developers highly rely on in order to maximize their profit. They usually program their hijackers like Bookness Virus to be able to track the browsing patterns of the users. For example, they can monitor the kind of websites you visit, as well as those that you bookmark or favorite. In addition, they also pay attention to the things you search for online, as well as even the things you post and like on social media. All of this information can give the hijacker the necessary insight into your interests and will allow it to determine which of its ads will be more attractive to you. after some time you can actually begin to notice yourself, how the ads you keep seeing oddly relate to your recent online activity.

Now, this may seem pretty disturbing to you and while it certainly is a violation of your privacy, it’s nothing illegal, nor is it genuinely dangerous to you. Browser hijackers like Bookness Virus are not viruses, but they can have the ability of unwillingly exposing you to them. This could happen as a result of the changes that the hijacker may introduce to your Registry, which may, in turn, weaken your system and make it more susceptible to outside attacks. Alternatively, the many ads that you constantly keep seeing on your screen can equally expose you to various threats, such as Trojans and ransomware. Various cybercriminals and hackers often rely on things called malvertisements for the distribution of their malicious programs and viruses. Malvertisements are online ads that are injected with malicious scripts and once you click one of them, you can end up getting infected immediately. They are all the more dangerous, because they look no different than your regular online ad. For this reason we like to advise our readers to simply abstain from interacting with any form of popups, banners and similar ads. there’s no telling, which of them may be malicious and it’s simply not worth risking your security to find out.


Name Bookness
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  A chamge in browser’s settings, such as a new homepage and new search engine.
Distribution Method Progrma bundles distributed on various freeware and shareware platforms, and similar.
Detection Tool

Keep in mind, SpyHunter’s malware detection tool is free. To remove the infection, you’ll need to purchase the full version. More information about SpyHunter and steps to uninstall.

Bookness Virus Removal

If you are a Windows user, continue with the guide below.

If you are a Mac user, please use our How to remove Ads on Mac guide.

If you are an Android user, please use our Android Malware 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).



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 SpyHunter to see if it can detect parasite files for you.

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:

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:

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 Bookness Virus 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 Bookness Virus from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Bookness Virus 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.


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 SpyHunter
a professional malware removal tool.

More information on SpyHunter, steps to uninstallEULAThreat Assessment Criteria, and Privacy Policy.

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

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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