Ransomware Research
FonixCrypter Ransomware
FonixCrypter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Fonix, Repter, XINOF.
Quick Facts
- Ransomware Family
- FonixCrypter
- First Seen
- May 1, 2020
- Known Aliases
- FonixRepterXINOF
How FonixCrypter Ransomware Works
Targeted Files
Full extension of encrypted files -> .Email=[bondbond1@protonmail.com]ID=[XXXXXXXX].XINOF
File Encryption Patterns
FonixCrypter modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..Fonix..repter..XINOF..harmaRansom Note and Payment Demands
After encrypting files, FonixCrypter displays ransom notes demanding payment for file recovery:
# How To Decrypt Files #.htaRansom message:
notes/# How To Decrypt Files #.hta
Note locations:
EveryFolderHow To Decrypt Files.htaRansom message:
notes/How To Decrypt Files.hta
Note locations:
EveryFolderHelp.txtRansom message:
notes/Help.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with FonixCrypter ransomware:
repter.exeRepter.exeXINOF.exe9egggs.exe32.exexinof.exe1249346496.exeXINOF4.3.232.exe
Elastio Can Help You
Don't let FonixCrypter ransomware take over your data
Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.
About This Analysis
This FonixCrypter 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 FonixCrypter.
Last updated: July 30, 2025