Ransomware Research
BlackDream Ransomware
BlackDream is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BlackDream
- First Seen
- October 1, 2023
How BlackDream Ransomware Works
Targeted Files
Full extension -> .[C63F241F].[Blackdream01@zohomail.eu].BlackDream
File Encryption Patterns
BlackDream modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..BlackDreamRansom Note and Payment Demands
After encrypting files, BlackDream displays ransom notes demanding payment for file recovery:
ReadME-Decrypt.txtRansom message:
notes/ReadME-Decrypt.txt
Note locations:
RootDiscsDesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with BlackDream ransomware:
Windows Security.exe
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About This Analysis
This BlackDream 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 BlackDream.
Last updated: July 30, 2025