Remove Nozelesn Ransomware - Restore .nozelesn Files

Remove Nozelesn Ransomware – Restore .nozelesn Files

This article will aid you to remove Nozelesn ransomware totally. Follow the ransomware removal instructions provided at the end of the article.

Nozelesn is a virus that encrypts your files and demands money as a ransom to get your files restored. The Nozelesn cryptovirus will encrypt your data and files, while placing the .nozelesn extension to them. Continue reading the article and see how you could try to potentially recover some of your file data.

Threat Summary

TypeRansomware, Cryptovirus
Short DescriptionThe ransomware encrypts files on your computer system and demands a ransom to be paid to allegedly recover them.
SymptomsThe ransomware will encrypt your files. All locked files will become unusable after encryption which will leave them with the .nozelesn extension.
Distribution MethodSpam Emails, Email Attachments
Detection Tool See If Your System Has Been Affected by Nozelesn


Malware Removal Tool

User ExperienceJoin Our Forum to Discuss Nozelesn.
Data Recovery ToolWindows Data Recovery by Stellar Phoenix Notice! This product scans your drive sectors to recover lost files and it may not recover 100% of the encrypted files, but only few of them, depending on the situation and whether or not you have reformatted your drive.

Nozelesn Ransomware — Update December 2018

The recent attack campaigns carrying the Nozelesn ransomware appear to be against companies or whole networks of computers. The ransomware appears to be spread in ways that take out multiple hosts located on the same premises or local networks. This has allowed the ransomware operators to quote very large ransomware sums to the victims. In one of the reports that noticed that the victims have had the option of negotiating the requested ransom with the operators.

Nozelesn Ransomware – Update July 2018

In July 2018, the Nozelesn ransomware continues to spread and victims report as what the encryption process could be judging from the decryption file they received from paying the ransom. With it a key file was actually provided containing the decryption key. The file with the key’s full name is:

  • Nozelesn-Encryption-Key.txt

Inside the file there is 64 byte hex as Michael Gillespie, a malware researcher, has deducted from his first look into the code. Probably an AES encryption algorithm is used. The decryptor is one file dubbed “decryptor.bin” and is detected by some antivirus engines on the VirusTotal service:

Nozelesn Ransomware – Infection Spread

Nozelesn ransomware might spread its infection in various ways. A payload dropper which initiates the malicious script for this ransomware is being spread around the World Wide Web, and researchers have gotten their hands on a malware sample. If that file lands on your computer system and you somehow execute it – your computer device will become infected.

Freeware which is found on the Web can be presented as helpful also be hiding the malicious script for the cryptovirus. Refrain from opening files right after you have downloaded them. You should first scan them with a security tool, while also checking their size and signatures for anything that seems out of the ordinary. You should read the tips for preventing ransomware located at the corresponding forum thread.

Nozelesn Ransomware – In-Depth Analysis

Nozelesn is a virus that encrypts your files and places an .htm file, with instructions inside it, about the infected computer system. The extortionists want you to pay a ransom fee for the alleged restoration of your files. Currently, there are many victims from Poland reporting to have the ransomware. According to researchers there might be an email spam campaign that targets the country specifically.

Nozelesn ransomware could make entries in the Windows Registry to achieve persistence, and could launch or repress processes in a Windows environment. Such entries are typically designed in a way to launch the virus automatically with each start of the Windows operating system.

After encryption the Nozelesn virus shows a ransom message located inside the following file:


You can see the contents of the HOW_FIX_NOZELESN_FILES.htm file, from the following screenshot given here:

The ransom note states the following:

All files including videos, photos and documents on your computer are encrypted by nozelesn ransomware.
File decryption costs money.
In order to decrypt the files, you need to perform the following steps:
1. You should download and install this browser
2. After installation, run the browser and enter the address: lyasuvlsarvrlyxz.onion
3. Follow the instructions on the web-site. We remind you that the sooner you do, the more chances are left to recover the files.
Guaranteed recovery is provided within 10 days.
You should enter the personal code on the tor site.
Your Personal CODE:

The note of the Nozelesn ransomware virus states that your files are encrypted. You are demanded to pay money to allegedly restore your files. The demanded payment sum is 0.1000 Bitcoins which equals around 659 US Dollars at the time of writing of this article. However, you should NOT under any circumstances pay any ransom sum. Your files may not get recovered, and nobody could give you a guarantee for that. Adding to that, giving money to cybercriminals will most likely motivate them to create more ransomware viruses or commit different criminal activities. That may even result to you getting your files encrypted once again.

As seen from the ransom note, a domain is left for contacting the cyber criminals, namely “lyasuvlsarvrlyxz.onion”. Visiting the domain on the TOR Network yields the following result:

If you fill in your ID, you will be redirected to an instruction page:

As stated before – do not trust the cybercriminals and do not pay the ransom.

Nozelesn Ransomware – Encryption Process

What is known for the encryption process of the Nozelesn ransomware is that every file that gets encrypted will become simply unusable. All encrypted files will receive the “.nozelesn” extension appended to them as a secondary extension, leaving the original one and filename unchanged.

A list with the targeted extensions of files which are sought to get encrypted is currently unknown. However, if it becomes known, it will be posted here as an update to the article.

The files used most by users and which are probably encrypted are from the following categories:

  • Audio files
  • Video files
  • Document files
  • Image files
  • Backup files
  • Banking credentials, etc

The Nozelesn cryptovirus could be set to erase all the Shadow Volume Copies from the Windows operating system with the help of the following command:

→vssadmin.exe delete shadows /all /Quiet

In case the above-stated command is executed that will make the effects of the encryption process more efficient. That is due to the fact that the command eliminates one of the prominent ways to restore your data. If a computer device was infected with this ransomware and your files are locked, read on through to find out how you could potentially restore some files back to their normal state.

Remove Nozelesn Ransomware and Restore .nozelesn Files

If your computer system got infected with the Nozelesn ransomware virus, you should have a bit of experience in removing malware. You should get rid of this ransomware as quickly as possible before it can have the chance to spread further and infect other computers. You should remove the ransomware and follow the step-by-step instructions guide provided below.

Tsetso Mihailov

Tsetso Mihailov

Tsetso Mihailov is a tech-geek and loves everything that is tech-related, while observing the latest news surrounding technologies. He has worked in IT before, as a system administrator and a computer repair technician. Dealing with malware since his teens, he is determined to spread word about the latest threats revolving around computer security.

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  1. AvatarJason Patterson

    I am working with a client as we speak on this ransomware. I see you mention in the articles that banking credentials can be affected. Would you advise having them contact all their financial institutions to put a watch on their accounts?

    1. Tsetso MihailovTsetso Mihailov (Post author)

      Hello, Mr. Patterson.

      Usually ransomware tries to lock files which could contain such sensitive information.

      While on the other hand, it could be designed to steal credential data.

      So, yes, it is a good idea to contact their financial institutions, since the ransomware has multiple variants and may come along with a Trojan horse. The Trojan may be set to try and log keystrokes, although that is not known for the time being.

  2. AvatarFrank Lievrouw

    In your simple straight forward instructions, you state to boot to safe mode, it is apparent that the creators of this code have taken that into account as the system I am dealing with does not allow you to boot to safe mode, it hangs every time I try.

    1. AvatarVencislav Krustev

      Hello Frank Lievrouw,

      If Nozelesn does not allow you to boot into safe mode it is safe to say that you should remove this virus automatically by scanning your PC with an anti-malware or an antivirus software. If you want to remove Nozelesn ransomware manually however, you can do that by downloading a Live OS and setting it up on a flash drive that is bootable so that you PC boots from the live os and then by doing so you can access your PC’s drive from it and remove the malicious files this way. But to make it easier for you, I would go ahead with scanning my computer with an anti-malware software to remove this virus automatically.(no need to boot into safe mode).

  3. Avatarkeimax

    But when i delete the infected files – my files are gone! Its database files which information that i need (have no backup) What do I do?

    1. AvatarMilena Dimitrova

      Hi keimax,

      Do you mean that you have deleted your encrypted files? At this point you can try using data recovery software to see if you can bring back the files that are deleted. Keep in mind this ransomware virus may encrypt copies of the original files and then delete the originals as most viruses of this type do, so there may still be hope.


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