How to Remove Nefryhok Search “Virus”

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This page aims to help you how to remove the Nefryhok Search “virus”. The “Virus” primarily infects Chrome users and redirects them to

Nowadays there are more and more infections with browser hijackers. This is also the case with the program called Nefryhok Search. It is the root of the unusual behavior of all your browsers recently. No matter whether you try to load a webpage in Firefox, Chrome or Explorer, the browser just broadcasts some rather disturbing ads in huge numbers or redirects you to a completely different page from the one you wanted to open. In addition, probably the usual search engine and homepage of your browser has been substituted with new, completely unfamiliar ones.

How does Nefryhok Search act?

We have pretty much summarized the typical behavior of any browser hijacker above. Still, the reasons for such sometimes irritating activities might be unclear to you. If you are wondering why any program might be programmed to generate so many ads, the answer to that question is that the software developers profit from the invasive ads as easily as Nefryhok Search generates all those pop-ups, boxes, pop-unders and other versions of advertisements. The producers and developers of the promoted software, goods and services are willing to pay a great amount of money to everyone who offers efficient advertising. And expectedly, as the most widely used means of spreading information at the present moment is the Internet, they have turned to the people responsible for a great deal of existing virtual content – programmers. As a result, producers and developers now work together towards good promotional campaigns and all sides gain from such cooperation. The same is the case with the altered search engines and homepages, as well as with the annoying redirections. The creators of Nefryhok Search “virus” have been paid to popularize particular search engines and homepages, and if your browser has been affected by this hijacker, you will see those particular ones.

How does the infection caused by Nefryhok Search happen?

The means of distributing Nefryhok Search are directly connected to the reasons why such software has been developed. Programmers like to spread browser hijackers and other ad-broadcasting software by putting them together in a set with various other programs. Such sets of software are called bundles. They are usually free for the user who ventures into downloading them and typically contain some interesting new programs and games, as well as ad-generating products. However, an infection does not occur simply by downloading a bundle. It happens only if you install it the wrong way, which does not give you the option to choose what to install on your PC and which programs from a given bundle you want to leave behind. Those ‘wrong’ options are called either default, automatic, typical or quick. The correct option, which you should click if you want to have the chance of installing only the content of the bundle that you really need, will be called custom or advanced. By using this option of the setup wizard you will make sure you get to select what you are putting into your system.

If Nefryhok Search infects a machine, does it have malicious features?

Luckily, we can honestly claim that Nefryhok Search does not possess any malicious functions. Viruses are always very harmful. As an illustration of this statement, Ransomware is a “virus” is designed to encrypt some of your files and then demand ransom for “setting them free” and making them accessible to you again. Browser hijackers could never do such a thing. Other “virus”es, like Trojans, usually use a program or a system weakness to get inside your device and steal data, corrupt your webcam and microphone, record keystrokes, rob your bank accounts, etc. Again, this cannot happen with a browser hijacker. Despite their normally harmless behavior and effects, though, they can still behave questionably sometimes. Hijackers might review your current browsing requests and generate a whole new ad campaign based on your recent surfing activities. Also, the ads might be the reason your computer may become slower than usual, which could really be irritating. Some of the redirections this hijacker is responsible for may lead to websites with unfamiliar or suspicious content. The new homepage/search engine it puts on your browser might appear to be inefficient or totally useless. To sum it up, Nefryhok Search might become a cause of great annoyance, but it could not be the reason for any dangerous activity on your device.

How should you uninstall this hijacker?

There are many options, some functional, others not that much. The one we have personally tested is the Removal Guide featured below, which has been especially developed to assist you in removing this hijacker. Good luck!


Name Nefryhok Search
Type Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Some alterations in the appearance and acting of your browser: new homepage/default search engine; mass production of ads; probable redirections to various online addresses.
Distribution Method Various sources: torrents, websites, spam, however, most commonly found in program bundles.
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.


Remove Nefryhok Search “Virus”


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).


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.

Reveal All Hidden Files and Folders.

  • Do not skip this  – Nefryhok Search may have hidden some of its files.

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.



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 Nefryhok Search 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 Nefryhok Search from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Nefryhok Search 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.

  • At this point the threat is gone from Chrome, but complete the entire guide or it may reappear on a system reboot.


Press CTRL + SHIFT + ESC simultaneously. Go to the Processes Tab. Try to determine which ones are dangerous. Google them or ask us in the comments.


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.

Right click on each of the problematic processes separately and select Open File LocationEnd the process after you open the folder, then delete the directories you were sent to.



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 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

Remember to leave us a comment if you run into any trouble!


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