Ransomware Research
FIOI Ransomware
FIOI is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2024, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- FIOI
- First Seen
- October 1, 2024
How FIOI Ransomware Works
Targeted Files
Full extension -> .[7E40E7FB].[help24dec@aol.com].FIOI
File Encryption Patterns
FIOI modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..FIOIRansom Note and Payment Demands
After encrypting files, FIOI displays ransom notes demanding payment for file recovery:
+README-WARNING+.txtRansom message:
notes/+README-WARNING+.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with FIOI ransomware:
FIOI_visual.exe
Elastio Can Help You
Don't let FIOI ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This FIOI 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 FIOI.
Last updated: July 30, 2025