Ransomware Research

Hunter Ransomware

Hunter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2025, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Hunter
First Seen
January 1, 2025

How Hunter ransomware works

File encryption patterns

Hunter modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.Hunter

Ransom note and payment demands

After encrypting files, Hunter displays ransom notes demanding payment for file recovery:

fileDecryption Instructions.txt
notes/Decryption Instructions.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Hunter ransomware:

About this analysis

This Hunter 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 Hunter.

Last updated: December 30, 2025

Detection coverage

Elastio detects Hunter inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Hunter across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.

See How the Hunt Engine WorksRequest a Demo

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