Ransomware Research
BlackFL Ransomware
BlackFL is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BlackFL
- First Seen
- July 1, 2025
How BlackFL Ransomware Works
File Encryption Patterns
BlackFL modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..BlackFLRansom Note and Payment Demands
After encrypting files, BlackFL displays ransom notes demanding payment for file recovery:
BlackField_ReadMe.txtRansom message:
notes/BlackField_ReadMe.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BlackFL ransomware:
cryptorcryptor.exe
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About This Analysis
This BlackFL 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 BlackFL.
Last updated: July 30, 2025