Ransomware Research

Mr.Locker Ransomware

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

Quick facts

Ransomware Family
Mr.Locker
First Seen
June 1, 2017

Ransom note and payment demands

After encrypting files, Mr.Locker displays ransom notes demanding payment for file recovery:

message
notes/note.txt
Location: OnceOnCompletion

Technical indicators

Associated executable files

The following executable files are associated with Mr.Locker ransomware:

About this analysis

This Mr.Locker 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 Mr.Locker.

Last updated: December 30, 2025

Detection coverage

Elastio detects Mr.Locker inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Mr.Locker 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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