Remove Kuub Virus Ransomware (+File Recovery)

About Kuub

Kuub is classified by our malware research team as the DJVU cryptoware genus. Another variants of this family is Boot, Nesa, Karl, and some others. There are certain antiviruses that skip it as well as therefore allowing its invasion. Actually, we have to call it that, because of the “.kuub” extension that it attaches at the end of your files.

Let’s clarify. Kuub ransomware assaults your PC through slyness and knack also. After that, once embedded it practices AES or RSA encryption methods to block your data.

After that, they extort you for their unblocke. After Kuub evades right into your system, it places every one of your records under locking. It attaches its very peculiar extension “.kuub” at the end, thus making documents unavailable.

Files with “.kuub” extension appended by the Kuub virus:

.kuub Files
Example of .kuub files

It targets documents, registers, images, mp3s, filmings, all of it! Thereafter, you can’t longer access them. Displacing the data or renaming it will not help. The only means to decode your files from the ransomware’s keep is deciphering. The malware expects you to disburse redemption cash if you wish to get your records back. It makes that clear (in the ransom message) it will decrypt documents after defrayal.

The message is generally a text file, left on your desktop. You can also locate it in every directory that has encrypted data. It describes your troubles and also suggests you a solution. According to Kuub, sole remedy to release your documents is with out-and-outer decryption key. And also, to obtain it you have to give a ransom. The sum is $980, as well as it’s generally asked for in cryptocurrency.

The note by the Kuub ransomware states the following information:


Don't worry, you can return all your files!
All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key.
The only method of recovering files is to purchase decrypt tool and unique key for you.
This software will decrypt all your encrypted files.
What guarantees you have?
You can send one of your encrypted file from your PC and we decrypt it for free.
But we can decrypt only 1 file for free. File must not contain valuable information.
You can get and look video overview decrypt tool:
Price of private key and decrypt software is $980.
Discount 50% available if you contact us first 72 hours, that's price for you is $490.
Please note that you'll never restore your data without payment.
Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours.

To get this software you need write on our e-mail:

Reserve e-mail address to contact us:

Our Telegram account:
Your personal ID:

Do NOT send money for decrypt of “kuub” files!

The Kuub virus guarantees, to send you the key after you pay. As well as, that’s it. That’s all you obtain – a promise. You have no guarantees that subordination results in something suitable. Do not rest on words of internet crooks. That is people, that will fool you. Do NOT send them a cent. Don’t call them Do NOT comply with their needs.

Do not pay for ransomware

How did my PC got harmed by Kuub?

Your computers get infected with the Kuub ransomware because of your incapacity to be on the guard. Some people do not pay attention to significant details while using the Internet or downloading different applications.

The Kuub ransomware uses the old yet gold invasive techniques to deceive you. And slips past you undetected. That contains masking behind damaged web links, sites, and torrents. It applies freeware as a way to hide itself. And forms as a fake system or program update. Like, Adobe Flash Player or Java.

Yet nine times out of ten, it utilizes junk emails. You obtain an email that seems to find from a well-known business. Like, Amazon or PayPal. And, the email prompts you to click a web link, or download and install an accessory. If you do, you end up with virus.

Remember that these types of risks are deluding your inadvertence. They need you to rush and miss doing due diligence. That relieve their hidden penetration. They bear on you to leave your fate to chance. Do not! Do not take recklessness over care. One keeps infections out. The other welcomes them in.

Consequently, do not disburse them a fee. Don’t connect to the virtual criminals. If you do, you’ll regret it. It’s a vain attempt to recover your information, as well as it will not end well for you. Below’s why.

There are a few cases that can unravel when you see the ransom money message on your desctop. Claim, you resolve to concede. You connect to the extortionists, send their buyout currency, and wait. You wait on them to send you the deciphering trick they promised. Well, what happens if they do not?

Even so, you have no assurances. All, you rest on, is a word. Can you absolutely think words of internet thieves? The answer is ‘No.’ These are persons, who will surely let down you. Don’t give cash! There’s also another way.

They can send you a deciphering key. However, when you attempt to execute it, it fails to work.

Yes, they can send you the incorrect one. After that, you have much less funds, as well as your information continues to be blocked. Don’t render! And also your prime case isn’t a reason for delight. What takes place after you disburse the buyout cash, obtain the appropriate trick, as well as totally free your files? Well? Consider it. You paid money to eliminate a sign and symptom, yet not the infection triggering it.

So, you remove the encoding, yet the Kuub malware stays. It’s still slinking in the corners of your system, complimentary to strike once again. After that, you’re back at a new start.

Why is Kuub unsafe?

In addition, to encrypt a victim’s data, the Kuub ransomware has also started to install the Azorult Spyware on PC to steal account data, cyber money wallets, desktop records, and more.

So, your device obtained assaulted by Kuub and also probably you have actually lost time trying to delete it manually. We are absolutely positive that the remedy below will certainly be successful in removing Kuub in an automated way.

How to protect PC from Kuub ransomware?

However, let us initially speak about prevention of such ransomware attacks in the future. There is something exists that you can do to escape this kind of menacing hazard from entering into your PC in advance?

There are a couple of things we wish to talk about here. First one is your personal blame for being incredibly attentive while you utilize your device and largely while you browse the web. When examining your e-mail and see some distrustful attachments consisted of, do not rush to open them.

The same way, when you get on Facebook and social networks also someone you know sends you messages containing accessories, be very mindful, specifically if these are some exe-extension files.

The second thing to take into consideration is exploring the dependability of your current anti-virus program. Regretfully, there are plurals safety and security softwares presently that just assert to be dependable, whereas in times of real malware invasions they simply stop working to do the task as claimed.

In case Kuub invaded into your laptop this specifies that your current anti-virus did not do its declared function as well as really fell short to guard your system. So obviously it is a factor for you to overestimate your choices and also definitely change over to some other program that can most certainly assure the wanted degree of security.

Not all antiviruses are good

We can also discuss some part of users that like not to have any kind of security software program at all. Definitely, this is a major mistake from their side, due to the fact that presently the net has plenty of virtual dangers that may stealthily intrude accessible systems, specifically those that are not appointed with some standard grade of safety.

So, having protection tool constantly working and protecting your computer is a must-do point in nowadays’ virtual world.


Kuub removal guide

STEP 1. Recover files from Kuub ransomware encryption

Cyber Security specialist Michael Gillespie createed decoder for some versions and variants of this family ransomware.

But it work when the Kuub virus used an offline key for encryption.

You can download free decryption tool here: STOPDecrypter. This tool includes a “Brute Force” algorithm for variants which use XOR encryption, a simple symmetric cipher that is relatively easy to break.

STOPDecrypter tool for Kuub removal

The decrypter tool requires victims to provide an encrypted and original file pair greater than 150KB.

If key does not found, we advice to restore your PC

There are a lot of different ransomware viruses on the internet. Some of them are more dangerous than the others because they not only leaving malicious processes to protect themselves, but also removing backups of your system to make the recovery process impossible.

Please Note: Not all ransomware infections are able to remove backups of your system, so it is always worth to try a windows recovery.
We recommend use Safe Mode with command prompt to safely perform a recovery of your files. You will have to reboot your computer, so you better save this instruction:

How to Restore Files from a Backup in Windows 7/8/10

STEP 2. Removing Kuub ransomware malicious files

Once the recovery process is complete, you should consider scanning your computer with a GridinSoft Anti-Malware in order to find any traces of Kuub infection. Though some ransomware viruses are removing themselves right after the encryption of your files, some may leave malicious processes on your computer for special purposes of cyber criminals.

Kuub Virus Remover

  1. Run GridinSoft Anti-Malware and choose the scan type, which is suitable for your needs. Of course, for the accuratest scan results we recommend you to choose the “Full Scan”.

    GridinSoft Full Scan

  2. Give Anti-Malware a little time to check your system:

    GridinSoft Anti-Malware Scanning

  3. Move to quarantine all the viruses and unwanted files, that you see in the results list:

    GridinSoft Anti-Malware Scan Result

  4. Enjoy the malware removal process:

    After Clean PC

  5. Use of On-run protection may additionaly prevent different types of cyber attacks, our protect may flag the downloader of the ransomware as a malicious application preventing the download of Kuub.

    GridinSoft Protection

STEP 3. Prevent the Kuub virus infection

Besides the protection tool, you should read and learn few simple rules. Follow them every time you work on your computer and your will decrease chances of your infection to a minimum:

  • Don’t open suspicious letters. No way! Be very careful with your downloads. Download and install applications preferably from its official website.
  • Do backups of your important files regularly. Storing your really important files in few different places is a good decision.
  • Keep your computer free from adware, hijackers and PUPs The infected computer will be more likely compromised with other malicious software, and ransomware is not an exception in this case.
  • Don’t panic and be reasonable. Don’t pay the ransom fee right after you got infected, it is always best to search on the internet for some answers. It is possible that someone have developed a decryption tool that might help you.

Polina Lisovskaya

I works as a marketing manager for years now and loves searching for interesting topics for you

One Comment

  1. Buenos dias, tengo el ordenador infectado con archivos KUUB, y ya lo he eliminado, les agradeceria que me dijeran como puedo desencrytar los archivos infectados. Muchas gracias

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