Ransomware Research

Eternity Ransomware

Eternity is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Eternity
First Seen
December 1, 2017

How Eternity ransomware works

File encryption patterns

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

Extensions added after encryption
.eTeRnItY.ecrp

Ransom note and payment demands

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

message
notes/note.txt
Location: OnceOnCompletion
message
notes/note1.txt
Location: Login

Technical indicators

Associated executable files

The following executable files are associated with Eternity ransomware:

About this analysis

This Eternity 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 Eternity.

Last updated: December 30, 2025

Detection coverage

Elastio detects Eternity inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Eternity 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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