NNLL Ransomware. How to decrypt .nnll files?

Written by William Reddy

If you can’t open your pics, documents, or other files and see the .nnll extension on them, your PC is surely infected with Nnll ransomware. It pertains to STOP/Djvu ransomware group

Nnll ransomware encrypts personal documents identified on the victim’s computer with the extension “.nnll” and then generates the ransom note in each folder which contains encrypted files. The instructions are placed on the victim’s PC in the “readme.txt” file. Its task is pretty much comparable to other examples of the same ransomware family: Wwhu, Wwza, Wwty.

What is Nnll Ransomware?

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

Nnll is file-encrypting ransomware that prevents normal access to your text files, Excel tables, videos and pictures by ciphering them. It marks the ciphered files with the “.nnll” extension. Then Nnll ransomware adds a money ransom note (readme.txt) to each folder. In it, you can see the instructions to pay the ransom ($490-$980 in Bitcoin) to a certain Bitcoin wallet. The AES-256 or RSA-1028 cipher it uses to cipher the files is not decryptable with contemporary computers. Even quantum computers that currently exist will spend thousands of years to get the decryption key.

How dangerous is the Nnll ransomware?

When Nnll ransomware gets on your computer, it will run through your disks for photos, videos, and important documents. It [ciphers all widespread file formats- .psd, .doc, .docx, .xls, .xlsx, .pdf, .jpeg, .png, et cetera. When these documents are located, the ransomware will encrypt them and change their extension to “.nnll” so that you understand what happened.

After the Nnll ransomware ciphered the files on your PC, it will generate the last “readme.txt” file on the main screen. In addition to the ransom transactioning instructions, the victims also see the email addresses to contact the cybercriminals – datarestorehelp@airmail.cc and support@fishmail.top.

Here is the ransom note that the Nnll 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:
support@fishmail.top

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

How did the Nnll ransomware get on my computer?

The Nnll ransomware spreads by placing websites to download hacked programs or games. They try to keep their eye on all hype topics which can be used to spread ransomware. New games introductions, new popular films – Nnll developers make everything to get their victims on that. One of the most favored tactics these burglars utilize is one-day sites with torrent downloading links. Nonetheless, following the contemporary news is not the only way these burglars use. Ways that have already turned into classic, such as e-mail spamming, are also usual for STOP/Djvu ransomware distribution.

Malicious email spam

The example of email spamming that may lead to Nnll ransomware injection

Avoiding this ransomware does not need a lot of initiative. Adhering to the standard principles of PC hygiene will substantially decrease all risks. Remember that starting all documents you get on e-mail is not a good tactic. Even worse scenario is to allow macros in Microsoft Office documents. But it is much better to avoid the malware attack at the moment when you have only opened the e-mail message. Examining the sender’s address can say a lot about what you can anticipate, as well as when you see the thing like “support@amazon.com”– it is likely a legitimate email. On the other hand, stuff that tries to look like Amazon or FedEx delivery alert, but uses the e-mail address of “amazonspurrot1363@gmail.com”– need to make you be on the alarm. Above, you can see the illustration of such a message.

Outlaw sources of various digital things need some additional description. Going against copyright regulation already throws you to the chance of being fined. Nonetheless, using torrent trackers or third-party websites to download “free” programs also exposes you to a wide range of malware. No one can regulate unnamed individuals who launch the torrent seeding or publish the hacked program version on the website with pirated program.

Nnll 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 Nnll 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 Nnll ransomware

In most cases, it’s impossible to recover the files encrypted by the Nnll 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 Nnll 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 .nnll 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 Nnll 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.

Remove NNLL Ransomware Virus (DECRYPT .nnll FILES)

Name: NNLL Virus

Description: NNLL Virus is a STOP/DJVU family of ransomware-type virus. It encrypts files, video, photos, documents. Encrypted files can be tracked by a specific nnll extension. NNLL 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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  2. About DJVU (STOP) Ransomware: https://gridinsoft.com/ransomware/djvu
  3. More about Trojan Killer: https://gridinsoft.com/trojankiller

About the author

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.

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