Ransomware Research
El Dorado Ransomware
El Dorado is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2024, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: El-Dorado, Eldorado, El Dorado Doxware.
Quick Facts
- Ransomware Family
- El Dorado
- First Seen
- May 1, 2024
- Known Aliases
- El-DoradoEldoradoEl Dorado Doxware
How El Dorado Ransomware Works
File Encryption Patterns
El Dorado modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..00000001Ransom Note and Payment Demands
After encrypting files, El Dorado displays ransom notes demanding payment for file recovery:
HOW_RETURN_YOUR_DATA.TXTRansom message:
notes/HOW_RETURN_YOUR_DATA.TXT
Note locations:
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About This Analysis
This El Dorado 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 El Dorado.
Last updated: July 30, 2025