Ransomware Research

AgeLocker Ransomware

AgeLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2020, this ransomware has been actively targeting systems worldwide.

Quick facts

Ransomware Family
AgeLocker
First Seen
November 1, 2020

How AgeLocker ransomware works

File encryption patterns

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

Extensions added after encryption
.sthd2.OU.kmd.hz.D4

Ransom note and payment demands

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

fileDECRYPT_MY_FILES.txt
notes/DECRYPT_MY_FILES.txt
Location: EveryFolder
fileHOW_TO_RESTORE_FILES.txt

Technical indicators

Associated executable files

The following executable files are associated with AgeLocker ransomware:

About this analysis

This AgeLocker 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 AgeLocker.

Last updated: December 30, 2025

Detection coverage

Elastio detects AgeLocker inside your data and backups.

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