Ransomware Research

Blind Ransomware

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

Quick facts

Ransomware Family
Blind
First Seen
October 1, 2017

How Blind ransomware works

File encryption patterns

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

Extensions added after encryption
.blind.kill.leon

Ransom note and payment demands

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

fileHow_Decrypt_Files.hta
notes/How_Decrypt_Files.hta
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Blind ransomware:

About this analysis

This Blind 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 Blind.

Last updated: December 30, 2025

Detection coverage

Elastio detects Blind inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Blind 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 Blind Ransomware? | Elastio