How to remove NK Ransomware and decrypt your files

What is NK Ransomware

NK Ransomware is a type of malicious software that encrypts files on an infected system, demanding a ransom for their decryption. Identified by its association with the Chaos ransomware variant, NK Ransomware appends a distinctive file extension composed of four random characters to each encrypted file, such as transforming 1.jpg into 1.jpg.we2b. Upon completing the encryption process, it alters the desktop wallpaper and creates a clear ransom note titled read_it.txt. This note explicitly informs victims that their files are encrypted and instructs them to purchase decryption software from the attackers for 5 LTC (Litecoin cryptocurrency), approximately equal to $360, contingent on current exchange rates. Victims are typically given a strict deadline of 24 hours to meet these demands. The note does not guarantee decryption even if the ransom is paid, as cybercriminals are notorious for not providing the decryption tools even after payment.

Currently, there are no publicly available decryption tools for NK Ransomware's encryption methods. The ransomware employs strong cryptographic algorithms, leaving users with limited options to regain access to their data. Since decryption without the cybercriminals' cooperation is near impossible, the best hope for recovering lost files is through external backups. For those without backups, using a reliable data recovery tool like Recuva might help restore certain non-encrypted files, though success is not guaranteed. It is strongly advised against paying the ransom as it fuels the continuation of such attacks and does not assure file recovery. These circumstances underscore the critical importance of proactive data protection measures, regular backups, and robust cybersecurity practices to mitigate the impact of ransomware attacks like NK.

How NK Ransomware infects computers

NK Ransomware infiltrates computers primarily through deceptive and malicious distribution methods, often leveraging phishing and social engineering tactics. Users may inadvertently download this ransomware by opening infected email attachments, which are typically disguised as legitimate documents or executable files. Additionally, visiting compromised websites, clicking on malicious ads, or downloading software from unreliable sources such as torrent sites can also lead to infection. Once the ransomware gains access to the system, it encrypts files, appending a unique extension, and demands a ransom for decryption. It may also exploit vulnerabilities in outdated software or use trojans to silently install itself, making it crucial for users to maintain updated security measures. To mitigate the risk, it's essential to exercise caution with email attachments and links, use reputable antivirus software, and ensure software is regularly updated.

1. Download NK Ransomware Removal Tool
2. Get decryption tool for encrypted files
3. Recover encrypted files with Stellar Data Recovery Professional
4. Restore encrypted files with Windows Previous Versions
5. Restore files with Shadow Explorer
6. How to protect from threats like NK Ransomware

NK Ransomware files:


read_it.txt
{randomname}.exe


NK Ransomware registry keys:

no information

How to decrypt and restore encrypted files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use following tool from Kaspersky called Rakhni Decryptor, that can decrypt encrypted files. Download it here:

Download RakhniDecryptor

There is no purpose to pay the ransom because there is no guarantee you will receive the key, but you will put your bank credentials at risk.

Dr.Web Rescue Pack

Famous antivirus vendor Dr. Web provides free decryption service for the owners of its products: Dr.Web Security Space or Dr.Web Enterprise Security Suite. Other users can ask for help in the decryption of encrypted files by uploading samples to Dr. Web Ransomware Decryption Service. Analyzing files will be performed free of charge and if files are decryptable, all you need to do is purchase a 2-year license of Dr.Web Security Space worth $120 or less. Otherwise, you don't have to pay.

If you are infected with NK Ransomware and removed from your computer you can try to decrypt your files. Antivirus vendors and individuals create free decryptors for some crypto-lockers. To attempt to decrypt them manually you can do the following:

Use Stellar Data Recovery Professional to restore encrypted files

1. Download Stellar Data Recovery Professional.
2. Click Recover Data button.
3. Select type of files you want to restore and click Next button.
4. Choose location where you would like to restore files from and click Scan button.
5. Preview found files, choose ones you will restore and click Recover.

Download Stellar Data Recovery Professional

Using Windows Previous Versions option:

1. Right-click on infected file and choose Properties.
2. Select Previous Versions tab.
3. Choose particular version of the file and click Copy.
4. To restore the selected file and replace the existing one, click on the Restore button.
5. In case there are no items in the list choose an alternative method.

Using Shadow Explorer:

1. Download Shadow Explorer program.
2. Run it, and you will see screen listing of all the drives and the dates that shadow copy was created.
3. Select the drive and date that you want to restore from.
4. Right-click on a folder name and select Export.
5. In case there are no other dates in the list, choose an alternative method.

If you are using Dropbox:

1. Login to the Dropbox website and go to the folder that contains encrypted files.
2. Right-click on the encrypted file and select Previous Versions.
3. Select the version of the file you wish to restore and click on the Restore button.

How to protect computer from viruses, like NK Ransomware, in future

1. Get special anti-ransomware software

Use ZoneAlarm Anti-Ransomware

Famous antivirus brand ZoneAlarm by Check Point released a comprehensive tool, that will help you with active anti-ransomware protection, as an additional shield to your current protection. The tool provides Zero-Day protection against ransomware and allows you to recover files. ZoneAlarm Anti-Ransomware is compatible with all other antiviruses, firewalls, and security software except ZoneAlarm Extreme (already shipped with ZoneAlarm Anti-Ransomware) or Check Point Endpoint products. The killer features of this application are: automatic file recovery, overwrite protection that instantly and automatically recovers any encrypted files, file protection that detects and blocks even unknown encryptors.

Download ZoneAlarm Anti-Ransomware

2. Back up your files

As an additional way to save your files, we recommend online backup. Local storage, such as hard drives, SSDs, flash drives, or remote network storage can be instantly infected by the virus once plugged in or connected to. NK Ransomware uses some techniques to exploit this. One of the best services and programs for easy automatic online backup is iDrive. It has the most profitable terms and a simple interface. You can read more about iDrive cloud backup and storage here.

3. Do not open spam e-mails and protect your mailbox

Malicious attachments to spam or phishing e-mails are the most popular method of ransomware distribution. Using spam filters and creating anti-spam rules is good practice. One of the world leaders in anti-spam protection is MailWasher Pro. It works with various desktop applications and provides a very high level of anti-spam protection.

Download MailWasher Pro