Kitty.dll “Virus” Removal

Parasite may reinstall itself multiple times if you don't delete its core files. We recommend downloading SpyHunter to scan for malicious programs installed with it. This may save you hours and cut down your time to about 15 minutes. 

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This page aims to help you remove Kitty.dll “Virus”. These Kitty.dll “Virus” removal instructions work for Chrome, Firefox and Internet Explorer, as well as every version of Windows.

Is Kitty.dll “Virus” a dangerous program or a virus? Why does it flood my monitor with hundreds of nagging ads, pop-ups and banners? If you would like to gain a better understanding about this program, you will first need to read more about what adware is and how it typically operates. In this article, we have gathered some important information about this type of software, its specifics and the potential negative effects it may cause. Usually, a program like Kitty.dll “Virus” integrates with most of the popular browsers like Firefox, Chrome and Explorer and makes them display an enormous amount of promotional messages, which may frequently interrupt the users’ normal browsing and cause them irritation and disturbance. This is the main reason for the adware to be regarded as potentially unwanted, but there are a few more unpleasant and potentially hazardous things this type of programs may cause. Let’s find out what they are in the next lines.

The problem with adware…

Typical adware programs like Kitty.dll “Virus” are famous for their ability to display incredible amounts of online ads, pop-ups, different boxes, banners and promotional messages or sometimes even redirect the users to other web pages, where sketchy content may be published. The problem for the users usually occurs the moment they are not able to stop or close these aggressively popping ads and get constantly redirected to different sites that they have never intended to visit. This activity may cause huge browsing disturbance to some people and may turn the program very problematic for the normal use of their browser. A piece of software like Kitty.dll “Virus” may cause the affected browser to crash, freeze or perform very slowly, and has the potential to eat up a lot of the system resources to keep its intrusive advertisements constantly on display.

But what is the purpose of that seemingly useless ad-generating activity? As you may guess, the online advertising industry is a big business, and as such, it uses a whole arsenal of tools to display different ads on the users’ screen. Programs like Kitty.dll “Virus” are one such tool, which is programmed to serve the marketers’ needs and showcase their products, services, and sites. Very often, the adware tools are involved in Pay-Per-Click campaigns, which generate money for the owners of the programs thanks to the users’ clicks. It won’t be a lie if we say that this is a bit aggressive advertising approach, but according to the law, this practice is not illegal and does not aim to do harm to the users and their machines. However, many people want to remove the annoying ads and this can effectively happen if they fully uninstall the unwanted software from their system.

Is Kitty.dll “Virus” a dangerous program or a virus?

A lot of users mistake adware for some sort of a virus and frequently panic when a program like Kitty.dll “Virus” invades their Chrome, Firefox or Explorer. This, however, is a very common misconception, which causes an unnecessary disturbance. The truth is that most of the adware, including Kitty.dll “Virus”, is generally not harmful and is not capable of causing a serious damage to your computer or your files, except the ads displaying annoyance on your screen. A real virus, or a malware like a Trojan horse or a Ransomware, on the other hand, can surely be a reason to worry. Such threat may not only corrupt your system, destroy your files or steal your credentials, but it can even blackmail you and involve you in various cyber crimes! No adware program can be related to such criminal activities, and its main purpose is to simply display ads for the profits of its developers.

Hazards and questionable activities

Despite that Kitty.dll “Virus” is not related to any virus and doesn’t have the harmful effects of a Trojan or Ransomware threat, we have to warn you about some potential hazards, which adware like this one may cause. Not only can it be very annoying to have such an ad-generating program inside your machine, but it may silently collect data about your browsing habits, and send it back to its developers for their marketing researches. You should also have in mind that the ads the adware can display may not be as safe as they may look like. Sometimes, even though it happens rarely, some fake or misleading ads may sneak inside the flow of pop-ups that you see on your screen. If you, by any chance, happen to click on such misleading ads, you may get redirected to some shady or compromised web locations. It is unnecessary to say that different nasty threats are only waiting to infect you if you land on them like that. So, our advice is to be cautious and avoid general interaction with the sketchy popping messages, banners and tabs. To eliminate the risk, you can even remove the flow of ads by simply uninstalling the adware that is generating them. If you are looking for a way to do that, feel free to use the instructions in the removal guide below. It contains everything you need to quickly and effectively get rid of the annoying software and all of its related effects once and for all. 


Name Kitty.dll
Type Adware
Danger Level Medium (nowhere near threats like Ransomware, but still a security risk)
Symptoms  Unstoppable flow of ads, pop-ups, different boxes, banners and promotional messages.
Distribution Method Spam, emails with attachments, torrents, freeware or shareware platforms, software bundles, direct downloads from the web, free automatic software installers. 
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.

Kitty.dll “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:

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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 Kitty.dll “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 Kitty.dll “Virus” from Firefox:

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

pic 6

Find the adware/malware —> Remove.
chrome-logo-transparent-backgroundRemove Kitty.dll “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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