Ransomware Research

Lethal Lock Ransomware

Lethal Lock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2024, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Lethal Lock
First Seen
April 1, 2024

How Lethal Lock ransomware works

File encryption patterns

Lethal Lock modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.LethalLock

Ransom note and payment demands

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

fileSOLUTION_NOTE.txt
notes/SOLUTION_NOTE.txt
Location: EveryFolder
screenshot
notes/qea71tcei.jpg
Location: Desktop

Technical indicators

Associated executable files

The following executable files are associated with Lethal Lock ransomware:

About this analysis

This Lethal Lock 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 Lethal Lock.

Last updated: December 30, 2025

Detection coverage

Elastio detects Lethal Lock inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Lethal Lock 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.

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What is Lethal Lock Ransomware? | Elastio