Remove Kook Virus Ransomware (+File Recovery)

About Kook

Kook is classified by our antivirus team as the DJVU virus genus. Another variants of this family is Erif, Kuus, Repl, and some others. There are certain antiviruses that skip it as well as therefore letting its intrusion. Actually, we have to name it so, because of the “.kook” extension that it adds at the end of your files.

Let’s clarify. Kook infection hits your PC through slyness and sleight also. After that, once embedded it practices AES or RSA enciphering methods to block your files.

After that, they extort you for their unblocke. After Kook gets round right into your system, it places every one of your documents under isolation. It joins its very own extension “.kook” at the end, thus making records unavailable.

Files with “.kook” extension appended by the Kook virus:

.kook Files
Example of .kook files

It attacks documents, folders, images, mp3s, filmings, all of it! Thereafter, you can’t longer view them. Relocating files or retitling it will not help. Sole remedy to unblocke your files from the cryptoware’s keep is decoding. The malware is aimed you to send buyout money if you wish to get your files back. It makes that clear (in the ransom note) it will decrypt records after payment.

The message is usually a text file, left on your desktop. You can also locate it in any directory that contains enciphered records. It describes your worries and also suggests you a decision. According to Kook, exclusive remedy to decode your documents is with an only decryption code. And also, to obtain it you have to disburse a payoff. The price is $980, as well as it’s normally asked for in Bitcoins.

The file “_readme.txt” by the Kook ransomware states the following info:


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 pay for decrypt of “kook” files!

The Kook ransomware guarantees, to send you the code after you render. As well as, that’s it. That’s all you obtain – a promise. You have no assurances that obedience results in something favorable. Do not rely on words of internet criminals. That is people, that will double-cross 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 Kook?

Your computers get corrupted with the Kook ransomware because of your disability to be watchful. Some people do not point out important details while browsing the Internet or downloading various softwares.

The Kook ransomware uses the old yet gold annexationist methods to deceive you. And rushes in undetected. That contains concealing behind broken web links, sites, and torrents. It applies free tools as a way to hide itself. And poses as a false system or software update. Like, Adobe Flash Player or Java.

Yet nine times out of ten, it utilizes spam emails. You receive an email that seems to find from a well-known company. Like, Amazon or PayPal. And, the email incites you to follow a web link, or download and install an accessory. If you do, you end up with ransomware.

Bear in mind that these types of risks are deluding your inadvertence. They need you to hurry and lose doing due diligence. That enable their latent penetration. They rest on you to leave your fate to chance. Do not! Don’t pick rashness over care. One keeps infections out. The other welcomes them in.

Therefore, do not pay them a loan. Don’t connect to the internet kidnappers. If you do, you’ll regret it. It’s a futile effort to restore your data, as well as it will not end well for you. Below’s why.

There are a few circumstances that can explain when you see the ransom currency note on your desctop. Claim, you decide to concede. You contact to the extortionists, send their buyout money, and wait. You wait on them to send you the deciphering trick they assured. Well, what happens if they do not?

Even so, you have no assurances. All, you rely on, is a faith. Can you absolutely think promises of internet frauds? The answer is ‘No.’ These are people, who will naturally disenchant you. Don’t pay money! There’s also another way.

They can actually send you a decoding key. However, when you attempt to open it, it fails to work.

Yes, they can send you the unfaithful code. After that, you have much less cash, as well as your information continues to be locked. Don’t disburse! And also your optimal strategy isn’t a reason for delight. What takes place after you disburse the buyout funds, obtain the appropriate trick, as well as totally free your data? Well? Consider it. You paid money to eliminate a sign and symptom, yet not the infection launching it.

So, you eliminate the enciphering, yet the Kook virus stays. It’s still sneaking in the hooks of your system, complimentary to strike once again. After that, you’re back at a new start.

Why is Kook unsafe?

In addition, to encrypt a injured’s files, the Kook virus has also started to install the Azorult Spyware on PC to steal account data, cryptocurrency wallets, desktop files, and more.

So, your device got attacked by Kook and also probably you have actually lost time trying to fix it manually. We are absolutely positive that the remedy below will certainly be effective in removing Kook in an automated way.

How to protect PC from Kook ransomware?

However, let us initially speak about preclusion of such malware assaults in the future. There is something exists that you can do to get away from this kind of critical menace from entering into your device beforehand?

There are a couple of things we wish to talk about here. First one is your individual accountability for being beyond belief attentive while you utilize your PC and largely while you surf the web. When examining your e-mail and see some distrustful attachments consisted of, do not rush to open them.

Similarly, when you get on Facebook and social networks also someone you communicate with sends you messages containing accessories, be very thoughtful, particularly if these are some .exe files.

The second thing to take into account is examining the reliability of your current anti-malware program. Regretfully, there are numerous safety and security programs presently that just announce to be credible, whereas in times of real malware intrusions they simply fail to do the task as promoted.

In case Kook penetrated into your device this indicates that your current anti-malware program did not do its declared assignment as well as really fell short to guard your system. So obviously it is a ratio for you to overrate your choices and also definitely change over to some other program that can most certainly grant the wanted level of security.

Not all antiviruses are good

We can also discuss some part of users that like not to have any kind of protection software program at all. Definitely, this is a big mistake on their component, due to the fact that presently the web has dozens of cyber dangers that may secretly invade susceptible systems, specifically those that are not equipped with some standard level of protection.

So, having antivirus constantly running and securing your PC is a required point in today’s virtual world.


Kook removal guide

STEP 1. Recover files from Kook ransomware encryption

You can download free decryption tool here: Decryptor for STOP Djvu. But it work when the Kook virus used an offline key for encryption.

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 Kook 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 Kook 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.

Kook 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 Kook.

    GridinSoft Protection

STEP 3. Prevent the Kook 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.

About Polina Lisovskaya

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

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