Ransomware Research

Alma Locker Ransomware

Alma Locker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2016, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
Alma Locker
First Seen
August 1, 2016

How Alma Locker ransomware works

File encryption patterns

Alma Locker modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
./\.[a-z0-9]{4,6}$/

Ransom note and payment demands

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

file/^Unlock_files_[a-z0-9]{4,6}\.txt$/
notes/Unlock_files_a5zfn.txt
Location: RootDiscs, UserFolders
file/^Unlock_files_[a-z0-9]{4,6}\.html$/
notes/Unlock_files_pigy.html
Location: RootDiscs, UserFolders

Technical indicators

Associated executable files

The following executable files are associated with Alma Locker ransomware:

About this analysis

This Alma 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 Alma Locker.

Last updated: December 30, 2025

Detection coverage

Elastio detects Alma Locker inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify Alma 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.

See How the Hunt Engine WorksRequest a Demo

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