Usfinf Virus


Usfinf is a browser hijacker, meaning it can infiltrate you Chrome, Opera, Firefox or any other browser on your PC and then flood it with ads and page redirects. Usfinf can also tinker with the browser’s search engine, homepage and toolbar settings.


The Usfinf virus land you on some obscure and sketchy online locations

All of this is, of course, something that most users would not enjoy since the nagging ads and page redirects can make it rather difficult to normally surf the Internet and could also lead to the exposure of the computer to a variety of software threats (such as spyware, ransomware, Trojan horses, worms, etc.). Also, the changes to the browser’s starting page, search engine and toolbar could be quite unpleasant as well, especially considering the fact that a hijacker would normally impose them without asking for a permission from the user.

So, what can one do when faced with such an app on their computer? Well, although removing a software component like Usfinf from your PC and browser wouldn’t be as easy as uninstalling some regular browser add-on or program, it’s still not that difficult and in the guide down below, we will reveal to you how you can quickly and easily take away the nagging Usfinf so as to return your browser and Internet settings to their previous state. The guide that we have prepared for you on this page includes a list of detailed steps with screenshots added for your convenience. Follow the steps and execute them exactly as described in order to fully get rid of the nagging Usfinf.

Note that if you do not think you can complete the manual guide on your own or if for some reason the steps do not work in your case, you can also use the professional removal tool that’s also available in the guide. It can detect all Usfinf-related data on your PC and help you get rid of it.

But why is it so necessary to remove the hijacker?

Aside from the more obvious reason – the irritation coming from the ads, the page-redirects and the unauthorized browser changes, there’s actually another and arguably more important reason why you might want (and should) eliminate Usfinf and any other browser hijacker that might currently be residing on your computer. What we are referring to is the possibility that an app like Usfinf or Poshukach might, through its ads, land you on some obscure and sketchy online locations that might be infested with harmful and hazardous software. Of course, this doesn’t mean each and every hijacker advert and redirect would be a link to some malicious and illegal website. Still, the possibility of such a thing happening is quite real and shouldn’t be underestimated which is why we strongly advise you to take immediate action towards getting rid of the undesirable hijacker in order to make your PC clean and secure once again. If you should face any difficulties with completing the guide, know that you can always tell us what the issue is through the comments section down below – we will make sure to answer your request!

Distribution methods used by browser hijacker developers

We can list a lot of possible ways an app like Usfinf could get onto your PC – through spam messages, via misleading online download requests, with the help of pirated or low-quality software products and so on and so forth. Another very popular and commonly-employed technique that some hijacker creators use to further distribute their products is through the file-bundling technique. This is when given app (in this case, Usfinf) is added to another program’s installation setup under the guise of a bonus element. Of course, one can choose to leave out that bundled bonus app out of the installation but most users do not do that and instead simply install everything from a given installer. We advise you to not do that and instead always use the Advanced or the Custom setup menus so as to be able to choose what to leave out of the installation in case there are any added elements that might be undesirable.


Name Usfinf
Type  Browser Hijacker
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms Hijackers are known for their irritating behavior with the ads they generate and the changes they make to the browser so it’s rather difficult not to notice the presence of such an app.
Distribution Method Mostly with the help of installation bundles and spam message campaigns. Misleading online offers are also commonly used for hijacker distribution.
Detection Tool

anti-malware offerOFFER *Read more details in the first ad on this page, EULA, Privacy Policy, and full terms for Free Remover.

Remove Usfinf Virus

To try and remove Usfinf quickly you can try this:

  1. Go to your browser’s settings and select More Tools (or Add-ons, depending on your browser).
  2. Then click on the Extensions tab.
  3. Look for the Usfinf extension (as well as any other unfamiliar ones).
  4. Remove Usfinf by clicking on the Trash Bin icon next to its name.
  5. Confirm and get rid of Usfinf and any other suspicious items.

If this does not work as described please follow our more detailed Usfinf removal guide below.

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:

Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
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    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.

    Browser Hijacker Removal Instructions

    ie9-10_512x512  Remove Usfinf 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 Usfinf from Firefox:

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

    pic 6

    chrome-logo-transparent-backgroundRemove Usfinf 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

    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


    Violet George

    Violet is an active writer with a passion for all things cyber security. She enjoys helping victims of computer virus infections remove them and successfully deal with the aftermath of the attacks. But most importantly, Violet makes it her priority to spend time educating people on privacy issues and maintaining the safety of their computers. It is her firm belief that by spreading this information, she can empower web users to effectively protect their personal data and their devices from hackers and cybercriminals.

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