Ransomware Research
Hyfenc Ransomware
Hyfenc is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick facts
- Ransomware Family
- Hyfenc
- First Seen
- December 1, 2025
How Hyfenc ransomware works
File modification behavior
Hyfenc updates file modification timestamps after encryption.
File encryption patterns
Hyfenc modifies encrypted files using specific patterns to mark them as encrypted:
Extensions added after encryption
- .hyfenc
Technical indicators
Associated executable files
The following executable files are associated with Hyfenc ransomware:
- nishi.exe
- had25d1g.exe
About this analysis
This Hyfenc ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like Hyfenc.
Detection coverage
Elastio detects Hyfenc inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify Hyfenc across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a hunt against your recovery points to confirm.