How to remove DataLeak Ransomware and decrypt .dataleak1 files

What is DataLeak Ransomware

DataLeak Ransomware is a dangerous file-locking malware identified as part of the MedusaLocker ransomware family. On an infected system, it swiftly encrypts user files and appends the .dataleak1 file extension to each one, changing filenames such as invoice.pdf to invoice.pdf.dataleak1. Engineered to cripple access to important data, it utilizes robust RSA and AES cryptographic techniques to make restoration without the decryption key virtually impossible. After encryption, READ_NOTE.html ransom note files are created and placed in every folder containing locked files, while a custom ransom message is also set as the desktop wallpaper to intensify urgency. These notes warn against using third-party recovery software or modifying the encrypted data, threatening permanent loss or exposure of confidential exfiltrated data if the victim fails to respond or attempts manual recovery. Attackers allow victims to decrypt 2-3 non-essential files as proof decryption is possible, and instruct them to initiate contact through Tor-based websites or provided email addresses. The ransom note not only demands payment but also menaces victims with public data leaks if their demands are unmet within 72 hours, increasing psychological pressure to comply.

No legitimate decryption tools are currently available to restore files affected by .dataleak1 encryption. The strength of the RSA and AES algorithms, implemented without exploitable flaws, means decryption is realistically only possible with keys uniquely held by the attackers. Compliance with ransom demands is strongly discouraged, as there are no guarantees cybercriminals will provide viable decryption software after payment, and such transactions promote further criminal activity. For victims seeking to decrypt .dataleak1 files, the only recommended recovery method is to restore from a clean, previously created backup stored offline or in a secure cloud service. If external or network drives were connected during the attack, they should be scanned for infection before data restoration. For future protection, maintaining multiple backup copies in diverse locations, practicing cautious online behavior, and keeping antivirus software updated can reduce the risk of ransomware encryption and minimize data loss in case of future incidents.

How DataLeak Ransomware infects computers

DataLeak Ransomware infiltrates computers primarily through deceptive tactics such as phishing and social engineering. Cybercriminals often disguise malicious files as legitimate documents, executables, or archives, which users inadvertently download and open. These files can arrive as email attachments from seemingly trustworthy sources or through links in spam emails and messages. Once activated, the ransomware exploits vulnerabilities in the system to execute its payload, encrypting files and appending a “.dataleak1” extension. Additionally, compromised websites, illegal software downloads, and fake software updates serve as common distribution channels, further expanding the ransomware’s reach. This sophisticated approach allows DataLeak to spread quickly and silently, often leaving victims unaware of the threat until their files are inaccessible.

1. Download DataLeak Ransomware Removal Tool
2. Get decryption tool for .dataleak1 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 DataLeak Ransomware

DataLeak Ransomware files:


READ_NOTE.html
{randomname}.exe


DataLeak Ransomware registry keys:

no information

How to decrypt and restore .dataleak1 files

Use automated decryptors

Download Kaspersky RakhniDecryptor

Use the following tool from Kaspersky called Rakhni Decryptor, that can decrypt .dataleak1 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 .dataleak1 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 DataLeak 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 .dataleak1 files

1. Download Stellar Data Recovery Professional.
2. Click Recover Data button.
3. Select the type of files you want to restore and click Next button.
4. Choose the 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 a 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 a 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 DataLeak 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. DataLeak 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