Remove “Cat.exe has stopped working” Virus


Adware is not exactly the most desirable software one would like to have on their PC. Unfortunately, neither is the “Cat.exe has stopped working” Virus, which just so happens to be an exemplary representative of this particular software category. As such, it is inclined to install an ad-generating component in any of the most popular browsers, like Chrome, Firefox, Explorer, Edge or others, which then proceeds to constantly display various banners, popups, box messages and various other ads directly on the screen of the affected PC. Furthermore, programs like this one can effectively initiate page redirects without the user being asked for consent. You may be wondering just what this is all about and whether you should be worried, aside from being so greatly annoyed by the software in question. And that’s where we come in – we’re here to answer all your questions. And at the end of this article, which will shed some light on the activities of programs like “Cat.exe has stopped working” Virus, we will also provide you with a detailed removal guide, with the help of which you will be able to detect and delete all “Cat.exe has stopped working” Virus components from your system. But before we go there, let’s first explain what this program is really after and how it can impact you.

The real purpose of adware and reasons for concern

Programs of this type typically serve the purposed of the online marketing industry and with that said, there are a lot of different parties invested in them being distributed and carrying out their promotional activities. Such are, quite obviously, the different vendors and providers of the services and goods that are advertised by software like the one you are dealing with right now. On the other hand, the developers pf programs like “Cat.exe has stopped working” Virus are equally as vested in this process, because they, too, benefit from the promotion of the said products and services. In fact, more often than not, adware is involved in remuneration schemes like Pay Per Click that ensure the developers’ profit from the clicks made by users on the numerous popups, banners, box messages and various other ads. Therefore, the more times you click on the ads that are displayed on your screen, regardless of the websites you’re on, the more revenue the developers earn. It is for that very reason that the ads are usually so aggressive, but there’s more than just blatant aggression that programmers tend to rely on.

Because it’s in their best interest that you see and interact with as many ads as possible, adware programs can try to make their ads seem more appealing to you and therefore attract your attention. However, the means they often use to achieve this are generally frowned upon in the online community, even by security experts. What we are talking about is the ability of adware to monitor the affected users’ browsing patterns and record different information related to the websites you visit, the kind of content you share on social media and other platforms, as well as your most recent online search requests. Based on all this information, the adware can then adjust its ads and display those that are more relevant to the collected data, so as to appear more interesting to each individual user.

However, like it or not, this can be viewed as a privacy invasion and nobody wants be subjected to that. Unfortunately, though, that’s not all you have to worry about when it comes to programs like “Cat.exe has stopped working” Virus. Many people concern themselves with the question of its harmfulness and whether or not it’s actually a virus or some piece of malware. At least in that sense you can relax and be sure that your system is not infected with anything malicious. However, the numerous ads, for example, could potentially expose you to something of the sort, and we’re talking high-profile threats like ransomware and Trojan horse viruses. Hackers tend to inject their ads with malware and then wait for unsuspecting users to come along and click on the compromised ads and get infected. Therefore, we would advise our readers to try and avoid interacting with any of the ads, as there’s no way of telling the malicious ones apart from the genuine ones without finding out the hard way. It’s best to simply remove the program generating most of the ads, so as to avoid bumping into anything that may hurt you.

“Cat.exe has stopped working” Virus Removal

Before you begin completing the steps from the following guide, we advise you to place a bookmark on this page or have it opened on a separate device since some of the following steps will require you to close your browser.

Enter Safe Mode. If you don’t know how to do it, use this guide.


Open the Task Manger by pressing Ctrl+Shift+Esc. Go to the processes/details Tab and take a look at the resulting list. If you see a process with the name of the unwanted program or looks shady, right-click on it and select Open File Location. If you believe it is part of the infection, delete the files.


Use the Winkey+R key combination to open the Run window and in the search field type appwiz.cpl. Hit Enter and in the resulting list, look for recently installed programs that look potentially unwanted. If you find anything – uninstall it.


Re-open Run and this tie type msconfig. Hit Enter again and in the resulting window, go to the Startup tab. See if there are any shady programs there and if anything looks suspicious uncheck it and then select OK.

In the Start Menu search field, copy-paste the following line: notepad %windir%/system32/Drivers/etc/hosts . Open the first result and look at the bottom of the file where it says “Localhost”. If there are any IP addresses below that, tell us what they are in the comments since they might be coming from the unwanted software.


Type Network Connections in the Windows search field and click on the first result. Right-click on the adapter that you are using at the moment and go to Properties > Internet Protocol Version 4 (TCP/IP) > Properties.

If the DNS line is not set to Obtain DNS server automatically, make sure to check that option.

Now go to Advanced > DNS tab and remove everything in DNS server addresses, in order of use.


Right-click on your browser’s icon and select Properties. Delete everything in Target that is after .exe”.

For Chrome users

Close Chrome and go to this folder: C:/Users/*Your username*/AppData/Local/Google/Chrome/User Data. Change the name of the Default folder to Backup Default. Re-open Chrome.

For Firefox users

Open Firefox and click on the Main Menu > Add-ons > Extensions. If you see anything suspicious there, remove it.

For IE users

When you open the browser, go to Tools > Manage Ad-ons and remove the unwanted software if you see it there. Next, go to Tools > Internet options and change the homepage URL to whatever you are normally using.


Open Run (Winkey+R), type Regedit and click on OK. Next, press Ctrl+F and type the malware name. Hit Enter and delete everything that gets found.

If there are no results from the search, manually visit those folders in the Registry Editor.

  • HKEY_CURRENT_USER/Software/Microsoft/Windows/CurrentVersion/Run
  • HKEY_CURRENT_USER/Software/Microsoft/Internet Explorer/Main

If you find there any suspicious keys that have names with a lot of random letters and numbers, delete them or if you are not sure, tell us in the comments what you saw.


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