Remove .Kuub Virus File Ransomware (+ Recovery)


About the .Kuub Virus

The .Kuub Virus will encrypt your files


In the following material, we are going to be talking about a malicious program known as .Kuub and we are also going to provide some essential tips for dealing with it, as this is not just a regular virus, but a piece of malicious programming that operates as a Ransomware cryptovirus. The main agenda of this cryptovirus is normally to encryption-lock the personal data of the contaminated users with complicated code. The idea behind the encryption process is that after it is finished, the victim will be incapable of reaching the encrypted files and is going to be more willing to give the demanded ransom to the hackers for having access to the encrypted data again. In most cases, a pop-up note reveals the infection – there, the hackers post their demands, threats, deadlines and other ransom payment details. The people, who are attacked, are typically threatened to never access their data again if they refuse to pay the demanded ransom. However, in case you do agree to pay, the cyber blackmailers promise that they are willing to give you a special decryption key to save the encrypted data.

If you have been infected by .Kuub and you are reading this because you are seeking how to deal with it, it is very important for your system’s health to thoroughly read the next few paragraphs because there you will find valuable information about the Ransomware threats. Especially for the recent victims of .Kuub, we have also included a removal guide that may help you remove the nasty virus from your system and a file-recovery section which may help you to get some of your files back without paying a ransom.

Important things you should know about Ransomware

When trying to handle a Ransomware such as .Kuub, .Kvag, .Adame people should keep in mind this is not an ordinary malware threat – it’s a kind of malware that operates quite differently when compared to the majority of other categories of malicious viruses. This is exactly what makes those infections some of the most challenging and most widespread malware hazards these days. The unfortunate reality is that most conventional anti-virus applications are somewhat ineffective when faced with a Ransomware virus as the malware generally succeeds in remaining below their radar. The most likely reason behind the extreme sneakiness of malware like .Kuub is the fact that it doesn’t damage or cause harm to anything on the targeted machine. Instead, it simply encrypts the targeted victim’s personal data – something that a lot of anti-malware programs do not target as malware-related. In fact, file encryption, as a process, isn’t generally linked to malware due to the fact it isn’t a damaging process. The main issue is that a Ransomware virus is capable of exploiting the encryption method and turn it against the targeted user by blocking their access to the sealed information and asking ransom for providing them with the decryption key.

In order for the blackmailing scheme to actually be effective, the attacked person needs to be shocked and incapable of thinking rationally which makes them take rushed decision of paying the ransom. It must be pretty obvious by now that directly proceeding with the ransom payment without first evaluating what other potential alternatives you could have is probably not the best course of action. That’s why we encourage you to first explore your options and give a try to methods that can help you remove .Kuub and avoid the ransom payment. For that, we have added down below a free possible solution to your issue – a Removal Guide and a professional removal tool for automatic assistance. The first half of the guide is focused on removing the malware while the second half includes possible file-restoration techniques.


Name .Kuub
Type Ransomware
Danger Level High (Ransomware is by far the worst threat you can encounter)
Symptoms Very few and unnoticeable ones before the ransom notification comes up.
Distribution Method From fake ads and fake system requests to spam emails and contagious web pages.







Remove .Kuub Ransomware

1: Preparations

Note: Before you go any further, we advise you to bookmark this page or have it open on a separate device such as your smartphone or another PC. Some of the steps might require you to exit your browser on this PC.

2: Task Manager

Press Ctrl + Shift + Esc to enter the Task Manager. Go to the Tab labeled Processes (Details for Win 8/10). Carefully look through the list of processes that are currently active on you PC.

If any of them seems shady, consumes too much RAM/CPU or has some strange description or no description at all, right-click on it, select Open File Location and delete everything there.

Also, even if you do not delete the files, be sure to stop the process by right-clicking on it and selecting End Process.

3: IP related to .Kuub

Go to c:\windows\system32\drivers\etc\hosts. Open the hosts file with notepad.

Find where it says Localhost and take a look below that. 

hosts_opt (1)

If you see any IP addresses there (below Localhost) send them to us here, in the comments since they might be coming from the .Kuub.


4: Disable Startup programs

Re-open the Start Menu and type msconfig.

Click on the first search result. In the next window, go to the Startup tab. If you are on Win 10,  it will send you to the Startup part of the task manager instead, as in the picture:

If you see any sketchy/shady looking entries in the list with an unknown manufacturer or a manufacturer name that looks suspicious as there could be a link between them and .Kuub , disable those programs and select OK.

5: Registry Editor

Press Windows key + R and in the resulting window type regedit.

Now, press Ctrl + F and type the name of the virus.

Delete everything that gets found. If you are not sure about whether to delete something, do not hesitate to ask us in the comments. Keep in mind that if you delete the wrong thing, you might cause all sorts of issues to your PC.

6: Deleting potentially malicious data – .Kuub

Type each of the following locations in the Windows search box and hit enter to open the locations:






Delete everything you see in Temp linked to .Kuub RansomwareAbout the other folders, sort their contents by date and delete only the most recent entries. As always, if you are not sure about something, write to us in the comment section.

7: .Kuub Decryption

The previous steps were all aimed at removing the .Kuub Ransomware from your PC. However, in order to regain access to your files, you will also need to decrypt them or restore them. For that, we have a separate article with detailed instructions on what you have to do in order to unlock your data. Here is a link to that guide.

Daniel Sadakov has a degree in Information Technology and specializes in web and mobile cyber security. He harbors a strong detestation for anything and everything malicious and has committed his resources and time to battling all manners of web and mobile threats. He has founded, a website dedicated to covering the top tech stories and providing useful tips for the everyday user, in an effort to reach and help more people.

Leave a Reply

Your email address will not be published. Required fields are marked *