Ransomware Research
DecryptFox Ransomware
DecryptFox is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- DecryptFox
- First Seen
- September 1, 2018
How DecryptFox Ransomware Works
Targeted Files
NOSAMPLE Renames files to -> 00-S1-31-AO-10-E7-4E-16-9A-16-16-8D-1D-E1-1D-CF-3D-FC-E7-CA-9B-15-25-90-72-11-35-0E-A6-38-7A-03-DF-51-C8-84-19-51-58-AC-1D-36-CC-83-A9-91-35-C3.encr
File Encryption Patterns
DecryptFox modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encrRansom Note and Payment Demands
After encrypting files, DecryptFox displays ransom notes demanding payment for file recovery:
readmy.txtRansom message:
notes/readmy.txt
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About This Analysis
This DecryptFox 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 DecryptFox.
Last updated: July 30, 2025