Remove Zquirrel “Virus”

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

Why are the Zquirrel Ads So Dangerous?

Zquirrel Ads is a malware that enters your computer as a fragment of an Adware program or a PUP. It is an Adware type of virus and it is not always easy to define how dangerous it is. Please note that malware has generally grown to be more and more complex and highly sophisticated, developing from being purely annoying to potentially stealing vital information.

Many consider Adware programs or a PUP (Potentially Unwanted Programs) innocent in nature and sometimes just infinitely irritating, but they definitely may have a negative impact on your system. This article will explain why these programs could be a great risk if the user continues to keep them long enough on his computer.

The Adware program is software created basically to display ads when the user is online. Sometimes it comes with extra bonuses, i.e. additional free programs. These free programs should always be managed with care because they might be often bundled with malicious free software in the form of pop-up advertisements, or banners which the user tends to download, thus revenue for the creator is generated for each click that has been made. The bad reputation keeps growing with the fact that they sometimes install themselves without the knowledge or consent of the user. This is the most popular procedure for Adware expansion. Zquirrel Ads is one of the viruses usually carried by these freeware programs.
Any engagement with these ads and the unknown files they provide is a potential danger and we strongly advise you to keep yourselves away from them or at least keep close attention to everything that is within the installation process and mark off all additional unwanted software.
Clicking on these suspicious pop-ups may cause extreme difficulties to uninstall them afterwards, impossible-to-close web pages, more and more ads to keep occurring. Also slowing down your PC, freezes, browser redirects (when you try to open a web page and immediate redirection is before your eyes or an additional website is displayed). It may modify files and make them unusable, it may record confidential data, it may corrupt social media (your Facebook, Twitter, Skype, etc.) to spam your contacts with messages carrying infected links causing further spread. The virus may expose you to other malicious software and even more fatal consequences for your personal data and the performance of the machine.

How May The User Get Infected?

As mentioned above, any interaction with such malicious software may produce an irreversible outcome. Sometimes the users are misled by being urged to download audio or video plug-ins for example, or new deceptive “program updates available now”. Also, beware of all unknown e-mail attachments; you might want to first have them scanned. If such fraudulent links are used, you will most probably end up with an additional malware that will even be far more severe and pernicious.

You can differentiate these ads as you keep in mind that they are usually search-related ads which mean that they appear in accordance with your most recent searches, or web visits. Zquirrel Ads may access your personal information and stored passwords and this could be tremendously dangerous especially if you use online banking services. Thus, it is very much advisable to change your passwords as soon as possible since you might be facing malicious software.

Knowing the type of the virus that is corrupting your computer and how it works along with the detailed guide below, will better help you have Zquirrel Ads effectively removed. If down the instructions you find some parts irrelevant to your particular problem, please proceed to the next element of the guidelines.

Feedback is important to us, so please do not hesitate to share your thoughts, ideas, or queries in the comment section below.


Name Zquirrel Ads
Type Adware
Danger Level Medium
Symptoms  Annoying Ads, Browser Redirects, PC slowing down.
Distribution Method Mostly through software bundles.
Detection Tool Malware and Adware are notoriously difficult to track down, since they actively try to deceive you. Use this professional parasite scanner to make sure you find all files related to the infection.Sponsored

Remove Zquirrel Virus

To try and remove Zquirrel 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 Zquirrel extension (as well as any other unfamiliar ones).
  4. Remove Zquirrel by clicking on the Trash Bin icon next to its name.
  5. Confirm and get rid of Zquirrel and any other suspicious items.

If this does not work as described please follow our more detailed Zquirrel 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

Remove Zquirrel “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).

Remove Zquirrel “Virus”


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. 

Remove Zquirrel “Virus”

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
This scanner is free and will always remain free for our website's users.
This file is not matched with any known malware in the database. You can either do a full real-time scan of the file or skip it to upload a new file. Doing a full scan with 64 antivirus programs can take up to 3-4 minutes per file.
Remove Zquirrel “Virus”
Drag and Drop File Here To Scan
Remove Zquirrel “Virus”
Analyzing 0 s
Each file will be scanned with up to 64 antivirus programs to ensure maximum accuracy
    This scanner is based on VirusTotal's API. By submitting data to it, you agree to their Terms of Service and Privacy Policy, and to the sharing of your sample submission with the security community. Please do not submit files with personal information if you do not want them to be shared.

    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. 

    Remove Zquirrel “Virus”

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

    Remove Zquirrel “Virus”

    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:

    Remove Zquirrel “Virus”

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

    Remove Zquirrel “Virus”

    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:

    Remove Zquirrel “Virus”

    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.

    Remove Zquirrel “Virus”

    Remove Zquirrel “Virus”

    • 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).

    Remove Zquirrel “Virus”

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

    Remove Zquirrel “Virus”

    Remove Zquirrel “Virus”  Remove Zquirrel from Internet Explorer:

    Open IE, click  Remove Zquirrel “Virus” —–> Manage Add-ons.

    Remove Zquirrel “Virus”

    Find the threat —> Disable. Go to Remove Zquirrel “Virus” —–> Internet Options —> change the URL to whatever you use (if hijacked) —> Apply.

    Remove Zquirrel “Virus” Remove Zquirrel from Firefox:

    Open Firefoxclick  Remove Zquirrel “Virus”  ——-> Add-ons —-> Extensions.

    Remove Zquirrel “Virus”

    Find the adware/malware —> Remove.
    Remove Zquirrel “Virus”Remove Zquirrel from Chrome:

    Close Chrome. Navigate to:

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

    Remove Zquirrel “Virus”

    Rename it to Backup Default. Restart Chrome.

    Remove Zquirrel “Virus”

    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


    Bert L. Jackson

    Bert L. Jackson has more then 13 years in the Cyber Security Industry consulting and collaborating. Distinguished for an entrepreneurial mindset, creative problem solving, cross-functional teams and a bottom-line orientation.


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      • Those IP’s look like they are coming from the unwanted software. Make sure to delete them and save the changes.

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