Djvu VirusRansomwareRemoval Guide

Nnuz Virus Removal Guide (+Decrypt .nnuz files)

Nnuz Virus – Details

Nnuz is a destructive software application working as common ransomware. Michael Gillespie, the popular virus researcher, very first found this new name in the DJVU ransomware family.

Nnuz was created for the sole function to encrypt all popular file types. Rationally, as quickly as the encryption is successfully accomplished, the users are unable to get access to them. Nnuz ransomware includes its own “.nnuz” to all the encrypted files. For example, the file “price_list.xls”, once crypted by Nnuz, will be titled as “price_list.xls.nnuz”. When the encryption is accomplished, Nnuz puts its own unique text document (_readme.txt) into all the folders that keep the encrypted files.

The alert specified by text file requesting the random os really similar to the alerts offered by other ransomware risks belonging to the DJVU family. The caution basically indicates that the data has been encrypted and the only solution to get access to it is to use a distinct standalone key. Regretfully, this declaration is absolutely true.

The method to secure the files used by Nnuz is not entirely investigated. Nevertheless, there is no doubt that each computer owner might be provided an unique decryption key, which is definitely unique. It is exceptionally hard to recuperate the data without the proper key in location.

“Don’t worry, you can return all your files!”, from text file message:

message from Nnuz virus

One more peculiarity of the Nnuz ransomware is that the users are unable to get access to the key. The decrypting key is hosted on an unique server under the total control by the crooks who have launched the Nnuz ransomware into the world wide web. In order to get the key and bring back the essential data, the users are told to connect with the frauds via e-mail or by telegram and to pay the ransom in the amount of $980.

The message likewise states that individuals need to get in touch with the Nnuz authors within 72 hours upon the moment of the data encryption. The alert shows that by doing so individuals will get a 50% discount, therefore, the ransom amount falls to $490.

No matter what the amount of the ransom is, we strongly encourage that you do not pay the ransom. There is no warranty that these online criminals will keep their pledges, so they may not care at all what the victims feel about the file encryption, even when the amount of the ransom is gotten into their accounts. For this reason, paying ransom often does not lead to an effective healing. So, the users might simply lose their money for absolutely nothing.

Similarly, we urge you not to call the frauds as they instruct. Do not transfer money into their wallets. There are no applications that might split the Nnuz virus or bring back the data at no cost. Therefore, the only proper decision is to bring back the information from possible backups (if offered).

Virus Summary

NameNnuz Ransomware
File Extensionnnuz
Short DescriptionThe ransomware encrypts all the data stored on your system and requires a ransom to be paid on your part supposedly to recover your important files.
SymptomsFile encryption by the ransomware is performed by means of the AES-256 algorithm (CFB mode) encryption algorithm. Once the encryption is completed, the ransomware adds its special .nnuz extension to all the files modified by it.
Distribution MethodAdware bundles and software cracks
Similar InfectionsLokas, Besub, Nusar
Nnuz Removal Tool   GridinSoft Anti-Malware
Nnuz Decryption Tool   Emsisoft Djvu Decryptor

Do not forget that the Internet is now full of infections comparable to the Nnuz virus. For instance, this particular risk is basically identical to Brusaf and other ransomware-type infections. These harmful energies have been developed in order to encrypt the essential data and express the need for the users to pay the ransom. All these infections utilize the identical algorithm to generate the specific key for effective data decryption.

Unless the Nnuz ransomware is still under the advancement procedure or has actually got some hidden bugs, it is not possible to restore the information by hand. Thus, the only working service to avoid the loss of your important information is to regularly preserve current backups of all your important documents.

Another crucial piece of advice is to store the backups on special storage not linked to your primary computer. For example, you might keep it on the USB Flash Drive, or some external drive, or by using the cloud data storage services. Keeping the backups on your system drive is very risky, given that the backup might also be encrypted by the Nnuz infection.

Leaks for the Nnuz ransomware attack.

Nnuz utilizes numerous paths to penetrate the susceptible computers. It is not certain what specific approach was utilized in your case, nevertheless, the invasion might happen via the following channels:

  • bundling with third-party programs, primarily free software;
  • spam e-mails from the unidentified senders;
  • websites offering free hosting;
  • P2P (peer-to-peer) torrent downloads.

There are times when the Nnuz virus may disguise itself as some real application, for instance, through the deceptive signals requiring setup of some software update. This is the most typical trick used by the scams to inject the Nnuz infection files into the system. In this manner users partially take part in its setup, without plainly comprehending the threat.

In addition, the frauds may send unsolicited spam email with tricky alerts motivating the people to open dubious attachments or click some download links, for instance, those encouraging the people to open certain images, text files, tax documents and other information.

No doubt, opening these files or clicking the destructive links may essentially harm the system. Fake Adobe Flash Player update notifications may result in the Nnuz ransomware infiltration. Likewise, downloading the broken software application may in addition contain the ransomware installer. The last but not the least, setup of Nnuz might take place through some Trojan horses that may be installed stealthily into the system and without the user’s direct approval or perhaps approval.

Avoiding the Nnuz ransom virus injection.

Of course, there is no outright warranty that your computer system will be constantly free of any malware attacks, nevertheless, we wish to share some helpful tips with you to make it safer. Make sure to pay really attention while browsing the web and especially while downloading cost-free programs. Do not open any dubious e-mail attachments, specifically if the sender is not understood to you.

Do not forget that particular freeware installer might also contain some other extra apps in the bundle. These additional applications may be very damaging. It is of utmost value to keep your anti-virus software and your os in basic to be constantly appropriately updated.

It is rather rational that downloading cracked apps is prohibited, nevertheless, additionally, such unapproved programs usage might also bring serious damage to your PC. Hence, do not download any cracked programs. Plus, the fact that your existing anti-virus did not protect the system from the Nnuz ransomware is a great reason for you to reevaluate your choices and change to another program that can render the protecting functions on a far better level.

Below please find the quotation from the Nnuz text file:


 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:

Screenshot of files with “.nnuz” extension added by the ransomware:”

Nnuz Ransomware - encrypt files with .nnuz extension

Use GridinSoft Anti-Malware to remove Nnuz ransomware from your computer

1.Download GridinSoft Anti-Malware.

You can download GridinSoft Anti-Malware by clicking the button below:

  GridinSoft Anti-Malware

2. Double-click on the setup file.

When setup file has finished downloading, double-click on the setup-antimalware-ag.exe file to install GridinSoft Anti-Malware on your computer.
GridinSoft Anti-Malware
An User Account Control asking you about to allow GridinSoft Anti-Malware to make changes to your device. So, you should click “Yes” to continue with the installation.
GridinSoft Anti-Malware Setup

3. Press Install button for run GridinSoft Anti-Malware.

GridinSoft Anti-Malware Install

3.Once installed, GridinSoft Anti-Malware will automatically run.

GridinSoft Anti-Malware  Start

4. Wait for the GridinSoft Anti-Malware scan to complete.

GridinSoft Anti-Malware will automatically start scanning your computer for Win Speedup 2018 and other malicious programs. This process can take a 20-30 minutes, so we suggest you periodically check on the status of the scan process.
GridinSoft Anti-Malware Scan

5. Click on “Clean Now”.

When the scan has completed, you will see the list of infections that GridinSoft Anti-Malware has detected. To remove them click on the “Clean Now” button in right corner.
GridinSoft Anti-Malware Scan Result

Use Emsisoft Decryptor for restore nnuz files

You can get Emsisoft Decryptor by clicking the button below:

  Emsisoft Decryptor

  1. Run the decryptor as an administrator. The license terms will show up, which you have to agree to by clicking the “Yes” button.
  2. Once the license terms are accepted, the primary decryptor user interface opens.
  3. By default, the decryptor will pre-populate the locations to decrypt with the currently connected drives and network drives. Additional locations can be added using the Add” button.
  4. Decryptors typically offer various options depending on the particular malware family. The available options are located in the Options tab and can be enabled or disabled there. You can find a detailed list of the available Options below.
  5. After you have added all the locations you want to decrypt to the list, click the “Decrypt” button to start the decryption process. The screen will switch to a status view, informing you about the current process and decryption status of your files
  6. The decryptor will inform you once the decryption process is finished. If you require the report for your personal records, you can save it by clicking the “Save log” button. You can also copy it straight to your clipboard to paste it into emails or forum posts if you are asked to.
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Daniel Zimmermann

Daniel Zimmermann has been writing on security and malware subjects for many years and has been working in the security industry for over 10 years. Daniel was educated at the Saarland University in Saarbrücken, Germany and currently lives in New York.

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