Remove Nozelesn ransomware (Removal Guide) - Dec 2018 update

removal by Alice Woods - - | Type: Ransomware

Nozelesn virus Removal Guide

What is Nozelesn ransomware?

Nozelesn ransomware – is data locking malware that uses fake DHL emails for propagation

Nozelesn virusNozelesn ransomware is a virus that spreads behind DHL emails

Nozelesn ransomware is a file locker that is used for money-extortion[1] purposes. It was first noticed in early July 2018, demanding users to pay a specified amount in BTC for the encrypted data that is locked by .nozelesn file extension. The ransom note HOW_FIX_NOZELESN_FILES.htm explains victims that they need to visit the TOR payment portal lyasuvlsarvrlyxz.onion in order to retrieve further instructions. The computing disaster starts when users open a contaminated email attachment that comes inside a spoofed email address from DHL. Upon release, Nozelesn ransomware targeted Polish users, although now researchers are spotting virus activity around the world. Besides regular users, malware attacked a multitude of companies, infecting networks and encrypting files on them and asking for as much as $27,000 for the decryption key.

Name Nozelesn
Type Ransomware
Targeted country Poland
Extension .nozelesn file extension
Cipher used AES
Ransom amount Varies
Ransom note HOW_FIX_NOZELESN_FILES.htm
Main dangers Data encrypting can lead to permanent data or money loss.
Distribution Malicious email attachments
Elimination You should use ReimageIntego for ransomware removal

The message from Nozelesn virus authors has more specific information about what happened to the victim's PC, as well as how to recover files that are locked. Cybercrooks are asking users to download TOR browser and log in to the payment server (“Nozelesn decryption cabinet”) lyasuvlsarvrlyxz.onion using a unique personal code to receive further instructions.

Once logged in, Nozelesn ransomware victims need to face the hard truth, namely that they need to pay a specified amount in Bitcoin. Hackers guarantee that the decryptor will be sent back within ten days. However, you should not listen to cyber crooks and remove Nozelesn virus instead, and then proceed with alternative data recovery methods.

The initial ransomware that users are exposed to 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 hxxp://www.torproject.org/projects/torbrowser.html.en
2. After installation, run the browser and enter the address: lyasuvlsarvrlyxz.onion
3. Follow the instruction 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.
IMPORTANT INFORMATION
You should enter the personal code on the tor site.

As you can see in the ransom message quote, Nozelesn virus developers suggest you follow their instructions and pay the ransom as soon as possible so you can get back the access to your files. However, cybersecurity researchers[2] do not recommend doing that. You need to focus on the Nozelesn ransomware removal and only then try to recover your data.

Nozelesn ransomwareNozelesn ransomware - a virus that has alleged decryption program

It is typical for ransomware-type virus developers to use common names, company logos or other information to make users open the malicious attachments inside phishing emails. Nozelesn ransomware is no exception. Security experts from CERT_Polska confirmed[3] that the delivery of malware is executed via phishing emails allegedly coming from Polish DHL:

It seems that the delivery method was through a spam campaign with fake DHL invoice.

Thus, be vigilant if you still have not injected your PC with dangerous malware. However, if your files get locked with .nozelesn extension, do not panic. You should get rid of the ransomware by scanning your system using security software first (we recommend ReimageIntego or SpyHunter 5Combo Cleaner), and then checking options for file recovery.

At the moment, it is believed that ransomware is deleting Shadow Volume Copies of affected files by using the command “vssadmin.exe delete shadows /all /Quiet.” However, we cannot confirm that and, if your files encrypted by Nozelesn, definitely try ShadowExplorer application that may be able to recover your data.

Insecure emails with big names used for spreading this virus

Virus developers tend to use various widely-known company names to make their spam emails more convincing. Such emails often appear legitimate only because of the names, logos, and similar content included in them. After seeing the name of FedEx, Amazon, eBay, or other companies, people don't even think about risks and download attachments that are injected with a malicious code of ransomware.

Nozelesn ransomware distributionNozelesn is known to be attacking companies and regular users with the help of phishing DHL emails

If you want to stay safe and prevent ransomware infection on your computer, make sure you double-check every email message to avoid malware and all the dangers associated with it. To find spam among safe emails, make sure you check:

  • The sender. Typically, sender's addresses should depict the company he or she is trying to represent, so make sure you check it;
  • The content. Email can be warned about bogus deliveries, invoices, money transactions, and similar information from companies that you have never used or even heard of (unfortunately, crooks tend to use the most popular firm names, and more often than not, users are actually involved). Discard such message immediately;
  • Attachments. Word or Excel documents can be filled with macro viruses. If the document is asking to enable macros, put it into the Trash box;

The final tip would be to download and install reputable security software and keep it up to date. Comprehensive anti-malware can prevent most of the viruses from entering, even if you fail to notice the deceit in updates, attachments, etc.

Remove Nozelesn ransomware using professional tools

To remove Nozelesn ransomware, you should use reliable anti-malware tools. They can ensure proper elimination of the virus. To scan your system correctly and remove all malicious components, make sure you update the software to its latest version. When dealing with this ransomware, we highly recommend using ReimageIntego, Malwarebytes or SpyHunter 5Combo Cleaner. These programs will also ensure full protection against similar viruses in the future.

Manual Nozelesn ransomware removal is not recommended as you are dealing with cryptovirus. Follow the guide below the article if the virus is blocking the scanner to prevent its removal. Next, move to the data recovery section. As we have mentioned, ransomware will try to delete Shadow Volume Copies of encrypted data. However, we still recommend trying ShadowExplorer as one of the options to recover encoded files.

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What to do if failed?
If you failed to remove virus damage using Reimage Intego, submit a question to our support team and provide as much details as possible.
Reimage Intego has a free limited scanner. Reimage Intego offers more through scan when you purchase its full version. When free scanner detects issues, you can fix them using free manual repairs or you can decide to purchase the full version in order to fix them automatically.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Reimage, try running SpyHunter 5.
Alternative Software
Different software has a different purpose. If you didn’t succeed in fixing corrupted files with Intego, try running Combo Cleaner.

Getting rid of Nozelesn virus. Follow these steps

Manual removal using Safe Mode

Remove ransomware with Safe Mode with Networking by using these steps:

Important! →
Manual removal guide might be too complicated for regular computer users. It requires advanced IT knowledge to be performed correctly (if vital system files are removed or damaged, it might result in full Windows compromise), and it also might take hours to complete. Therefore, we highly advise using the automatic method provided above instead.

Step 1. Access Safe Mode with Networking

Manual malware removal should be best performed in the Safe Mode environment. 

Windows 7 / Vista / XP
  1. Click Start > Shutdown > Restart > OK.
  2. When your computer becomes active, start pressing F8 button (if that does not work, try F2, F12, Del, etc. – it all depends on your motherboard model) multiple times until you see the Advanced Boot Options window.
  3. Select Safe Mode with Networking from the list. Windows 7/XP
Windows 10 / Windows 8
  1. Right-click on Start button and select Settings.
    Settings
  2. Scroll down to pick Update & Security.
    Update and security
  3. On the left side of the window, pick Recovery.
  4. Now scroll down to find Advanced Startup section.
  5. Click Restart now.
    Reboot
  6. Select Troubleshoot. Choose an option
  7. Go to Advanced options. Advanced options
  8. Select Startup Settings. Startup settings
  9. Press Restart.
  10. Now press 5 or click 5) Enable Safe Mode with Networking. Enable safe mode

Step 2. Shut down suspicious processes

Windows Task Manager is a useful tool that shows all the processes running in the background. If malware is running a process, you need to shut it down:

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Click on More details.
    Open task manager
  3. Scroll down to Background processes section, and look for anything suspicious.
  4. Right-click and select Open file location.
    Open file location
  5. Go back to the process, right-click and pick End Task.
    End task
  6. Delete the contents of the malicious folder.

Step 3. Check program Startup

  1. Press Ctrl + Shift + Esc on your keyboard to open Windows Task Manager.
  2. Go to Startup tab.
  3. Right-click on the suspicious program and pick Disable.
    Startup

Step 4. Delete virus files

Malware-related files can be found in various places within your computer. Here are instructions that could help you find them:

  1. Type in Disk Cleanup in Windows search and press Enter.
    Disk cleanup
  2. Select the drive you want to clean (C: is your main drive by default and is likely to be the one that has malicious files in).
  3. Scroll through the Files to delete list and select the following:

    Temporary Internet Files
    Downloads
    Recycle Bin
    Temporary files

  4. Pick Clean up system files.
    Delete temp files
  5. You can also look for other malicious files hidden in the following folders (type these entries in Windows Search and press Enter):

    %AppData%
    %LocalAppData%
    %ProgramData%
    %WinDir%

After you are finished, reboot the PC in normal mode.

Remove Nozelesn using System Restore

Use System Restore feature as the second option to disable Nozelesn ransomware:

  • Step 1: Reboot your computer to Safe Mode with Command Prompt
    Windows 7 / Vista / XP
    1. Click Start Shutdown Restart OK.
    2. When your computer becomes active, start pressing F8 multiple times until you see the Advanced Boot Options window.
    3. Select Command Prompt from the list Select 'Safe Mode with Command Prompt'

    Windows 10 / Windows 8
    1. Press the Power button at the Windows login screen. Now press and hold Shift, which is on your keyboard, and click Restart..
    2. Now select Troubleshoot Advanced options Startup Settings and finally press Restart.
    3. Once your computer becomes active, select Enable Safe Mode with Command Prompt in Startup Settings window. Select 'Enable Safe Mode with Command Prompt'
  • Step 2: Restore your system files and settings
    1. Once the Command Prompt window shows up, enter cd restore and click Enter. Enter 'cd restore' without quotes and press 'Enter'
    2. Now type rstrui.exe and press Enter again.. Enter 'rstrui.exe' without quotes and press 'Enter'
    3. When a new window shows up, click Next and select your restore point that is prior the infiltration of Nozelesn. After doing that, click Next. When 'System Restore' window shows up, select 'Next' Select your restore point and click 'Next'
    4. Now click Yes to start system restore. Click 'Yes' and start system restore
    Once you restore your system to a previous date, download and scan your computer with ReimageIntego and make sure that Nozelesn removal is performed successfully.

Bonus: Recover your data

Guide which is presented above is supposed to help you remove Nozelesn from your computer. To recover your encrypted files, we recommend using a detailed guide prepared by 2-spyware.com security experts.

If your files are encrypted by Nozelesn, you can use several methods to restore them:

Data Recovery Pro is a program specifically designed to restore lost files

If you deleted your files or if they got encrypted by ransomware try to recover them with Data Recovery Pro:

  • Download Data Recovery Pro;
  • Follow the steps of Data Recovery Setup and install the program on your computer;
  • Launch it and scan your computer for files encrypted by Nozelesn ransomware;
  • Restore them.

Windows Previous Versions feature can help you restore individual files

If System Restore feature was enabled before the initial attack, you could recover your files using Windows Previous Versions feature:

  • Find an encrypted file you need to restore and right-click on it;
  • Select “Properties” and go to “Previous versions” tab;
  • Here, check each of available copies of the file in “Folder versions”. You should select the version you want to recover and click “Restore”.

ShadowExplorer can help restore encrypted files

If Nozelesn ransomware have not touched Shadow Volume Copies you can rely on ShadowExplorer:

  • Download Shadow Explorer (http://shadowexplorer.com/);
  • Follow a Shadow Explorer Setup Wizard and install this application on your computer;
  • Launch the program and go through the drop down menu on the top left corner to select the disk of your encrypted data. Check what folders are there;
  • Right-click on the folder you want to restore and select “Export”. You can also select where you want it to be stored.

Nozelesn decrypter is not available

Finally, you should always think about the protection of crypto-ransomwares. In order to protect your computer from Nozelesn and other ransomwares, use a reputable anti-spyware, such as ReimageIntego, SpyHunter 5Combo Cleaner or Malwarebytes

How to prevent from getting ransomware

Choose a proper web browser and improve your safety with a VPN tool

Online spying has got momentum in recent years and people are getting more and more interested in how to protect their privacy online. One of the basic means to add a layer of security – choose the most private and secure web browser. Although web browsers can't grant full privacy protection and security, some of them are much better at sandboxing, HTTPS upgrading, active content blocking, tracking blocking, phishing protection, and similar privacy-oriented features. However, if you want true anonymity, we suggest you employ a powerful Private Internet Access VPN – it can encrypt all the traffic that comes and goes out of your computer, preventing tracking completely.

 

Lost your files? Use data recovery software

While some files located on any computer are replaceable or useless, others can be extremely valuable. Family photos, work documents, school projects – these are types of files that we don't want to lose. Unfortunately, there are many ways how unexpected data loss can occur: power cuts, Blue Screen of Death errors, hardware failures, crypto-malware attack, or even accidental deletion.

To ensure that all the files remain intact, you should prepare regular data backups. You can choose cloud-based or physical copies you could restore from later in case of a disaster. If your backups were lost as well or you never bothered to prepare any, Data Recovery Pro can be your only hope to retrieve your invaluable files.

About the author
Alice Woods
Alice Woods - Likes to teach users about virus prevention

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References
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