NNUZ Ransomware. How to decrypt .nnuz files?

If you cannot open your photos, documents, or data and also see the .nnuz extension on them, your computer is definitely infected with Nnuz ransomware. It belongs to STOP/Djvu ransomware family

Nnuz ransomware ciphers personal files identified on the victim’s PC with the extension “.nnuz” and after that leaves the ransom note in each folder which contains encrypted files. The instructions are put on the victim’s PC in the “readme.txt” file. Its activity is basically similar to other examples of the same family: Qlln, Fefg, Fdcv.

What is Nnuz Ransomware?

NameNnuz Virus
Ransomware family1DJVU/STOP2 ransomware
Extension.nnuz
Ransomware note_readme.txt
RansomFrom $490 to $980
Contactmanager@mailtemp.ch, helprestoremanager@airmail.cc
SymptomsThe images, videos, and other documents have the “.nnuz” extension and cannot be opened by any programs
Fix Tool Trojan Killer – ransomware infections tool. 14-day free trial.

Nnuz is file-encrypting ransomware that prevents access to your text files, Excel tables, videos and pics by ciphering them. It marks the ciphered files with the “.nnuz” extension. Then Nnuz ransomware adds a ransom note (readme.txt) to each folder. In this note, you can see the guidance to pay the ransom ($490-$980 in Bitcoin) to a specified BTC wallet. The AES-256 or RSA-1028 cipher it uses to encrypt the files is not decryptable with modern computers. Even quantum computers that already exist will spend hundreds of years to brute force the decryption key.

How dangerous is the Nnuz ransomware?

When Nnuz ransomware gets in your system, it will check your computer for images, videos, and important documents. It encrypt] all widespread file formats- .psd, .doc, .docx, .xls, .xlsx, .pdf, .jpeg, .png, et cetera. When these files are located, the ransomware will cipher them and also change their extension to “.nnuz” so that you understand what happened.

After the Nnuz ransomware encrypted the files on your PC, it will drop the last “readme.txt” file on the desktop. Besides the money transferring instructions, the victims also see the email addresses to contact the fraudsters – helprestoremanager@airmail.cc and manager@mailtemp.ch.

Here is the money ransom note that the Nnuz ransomware shows to its victims:

ATTENTION!

Don't worry, you can return all your files!
All your files like pictures, 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:
https://we.tl/t-fhnNOAYC8Z
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:
manager@mailtemp.ch

Reserve e-mail address to contact us:
helprestoremanager@airmail.cc

How did the Nnuz ransomware get on my computer?

The Nnuz ransomware spreads by posting links to download hacked programs or games. Cybercriminals that spread this ransomware are extremely clever, and aim to stay connected with modern things. New games introductions, new popular movies – Nnuz developers make everything to get their money on that. Some of the most favored strategies these criminals use is one-day websites with torrent downloading links. However, following the modern trends is not the only way these criminals use. Ways that have already become standard, such as e-mail spamming, are also standard for STOP/Djvu ransomware distribution.

Malicious email spam
The example of email spamming that may lead to Nnuz ransomware injection

Preventing this ransomware does not need a lot of initiative. Adhering to the standard rules of PC hygiene will considerably reduce all risks. Keep in mind that starting all documents you get on email is not a good option. Even worse case is to allow macros in Microsoft Office documents. However, it is better to avoid the malware intrusion at the moment when you have just opened the e-mail message. Checking the sender’s address can point out a lot about what you can anticipate, as well as when you see the thing like “support@amazon.com”– it is likely a trustworthy email. At the same time, stuff that tries to look like Amazon or FedEx delivery notification, however, uses the e-mail address of “amazonspurrot1363@gmail.com”– must make you be on the alarm. Above, you can see the illustration of such a message.

Illegal sources of different digital things require some extra explanation. Going against copyright law already exposes you to the possibility of being fined. Nonetheless, utilizing torrent trackers or third-party sites to download “free” programs likewise exposes you to different malware. No one can regulate undisclosed individuals that launch the torrent seeding or release the hacked program version on the site with pirated program.

Nnuz virus removal instructions.

Download Trojan Killer Portable

Trojan Killer Portable Download

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This guide below shows how to use Trojan Killer Portable3 for Nnuz virus detection and removal:

  • STEP 1. Download and install Trojan Killer.

  • STEP 2. Click on "Finish".

  • STEP 3. Wait until necessary updates are downloaded and installed.

  • STEP 4. Select computer scan type.

  • STEP 5. The software will begin scanning your computer.

  • STEP 6. Click on "Cure PC".

Restore the files encrypted by the Nnuz ransomware

In most cases, it’s impossible to recover the files encrypted by the Nnuz ransomware because the private key needed to unlock the encrypted files is only available through cybercriminals. However, we’ve listed one option you can use to recover your files below.

Warning! Make sure you remove the ransomware from your system first, otherwise, it will repeatedly encrypt your files.

If your files were encrypted with an offline key, there is a chance you can recover them by using Emsisoft Decryptor for the STOP/Djvu decryption tool. Follow the below guide to recover your files using the Emsisoft Decryptor for STOP/Djvu.

  1. You can download Emsisoft Decryptor for STOP Djvu by clicking this link.
  2. When the decryptor has finished downloading, double-click on “decrypt_STOPDjvu.exe” to run this program on your computer.
  3. Click the “Decrypt” button to start the decryption process for Nnuz files. The screen will switch to a status view, informing you about your files’ current process and decryption status.
  4. The decryptor will inform you once the decryption process will be finished. If you require the report for your records, you can save it by clicking the “Save log” button.

If the Emsisoft Decryptor can’t decrypt your .nnuz files and you do not plan on paying the ransom, it is advised that you make an image of the encrypted drives so that you can decrypt them in the future.

Your computer should now be free of the Nnuz ransomware infection. However, suppose your current antivirus allowed this malicious program on your computer. In that case, you might want to consider purchasing the full-featured version of Trojan Killer to protect against these types of threats in the future.

NNUZ Ransomware — How To Remove Virus & Decrypt Files?

Name: NNUZ Virus

Description: NNUZ Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific nnuz extension. NNUZ ransomware asks victims for a ransom fee about $490 - $980 in Bitcoin.

Offer price: 480

Currency: $

Operating System: Windows

Application Category: Virus

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  1. My files are encrypted by ransomware, what should I do now?
  2. About DJVU (STOP) Ransomware: https://gridinsoft.com/ransomware/djvu
  3. More about Trojan Killer: https://gridinsoft.com/trojankiller

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About William Reddy

I am from Ireland. My parents bought me a computer when I was 11, and several months after I have got a virus on this PC. I decided to enter the INSA Centre Val de Loire university after being graduated from the school. This French educational institution was offering a brand-new cybersecurity course. After getting the master's degree in cybersecurity, I've started working as a virus analyst in a little anti-malware vendor.