Ransomware Research
CRFILE Ransomware
CRFILE is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- CRFILE
- First Seen
- April 1, 2025
How CRFILE Ransomware Works
File Encryption Patterns
CRFILE modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..CRFILE2Ransom Note and Payment Demands
After encrypting files, CRFILE displays ransom notes demanding payment for file recovery:
READ_NOTE.htmlRansom message:
notes/READ_NOTE.html
Note locations:
EveryFolderRansom message:
notes/output.png
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with CRFILE ransomware:
2.exCRFILE2.exe
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About This Analysis
This CRFILE 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 CRFILE.
Last updated: July 30, 2025