Ransomware Research

Iron Ransomware

Iron is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Iron Locker, Iron Unlocker.

Quick facts

Ransomware Family
Iron
First Seen
April 1, 2018
Known Aliases
Iron LockerIron Unlocker

How Iron ransomware works

File encryption patterns

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

Extensions added after encryption
.encry

Ransom note and payment demands

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

file!HELP_YOUR_FILES.HTML
notes/!HELP_YOUR_FILES.HTML
Location: EveryFolder
message
notes/!HELP_YOUR_FILES.HTML
Location: OnceOnCompletion

Technical indicators

Associated executable files

The following executable files are associated with Iron ransomware:

About this analysis

This Iron 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 Iron.

Last updated: December 30, 2025

Detection coverage

Elastio detects Iron inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Iron 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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What is Iron Ransomware? | Elastio