Ransomware Research

DataLeak Ransomware

DataLeak is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
DataLeak
First Seen
June 1, 2025

How DataLeak Ransomware Works

File Encryption Patterns

DataLeak modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..dataleak1

Ransom Note and Payment Demands

After encrypting files, DataLeak displays ransom notes demanding payment for file recovery:

fileREAD_NOTE.html

Ransom message:

notes/READ_NOTE.html

Note locations:

EveryFolder
screenshot

Ransom message:

notes/output.png

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with DataLeak ransomware:

  • dataleak1.exe

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About This Analysis

This DataLeak ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like DataLeak.

Last updated: October 30, 2025

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