Ransomware Research

Makop Ransomware

Makop is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2011, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Oled-Makop, Carlos, Shootlock, Shootlock-2, Origami, Tomas, Zbw, Fireee, Zes, Hidden, Captcha, Fair.

Quick facts

Ransomware Family
Makop
First Seen
August 1, 2011
Known Aliases
Oled-MakopCarlosShootlockShootlock-2OrigamiTomasZbwFireeeZesHiddenCaptchaFair

How Makop ransomware works

File encryption patterns

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

Extensions added after encryption
.makop.CARLOS.shootlock.shootlock2.origami.tomas.zbw.fireee.zes.Hidden.captcha.fair.moloch.vassago.pecunia.id2020.dark.xdqd.harmagedon.code.mkp.razer.snick.baal.gamigin.mammon.oled.baseus.usagoo.sinister.hinduism.factfull

Ransom note and payment demands

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

filereadme-warning.txt
notes/readme-warning.txt
Location: EveryFolder
filebuild note.txt
notes/build note.txt
Location: EveryFolder
file+README-WARNING+.txt
notes/+README-WARNING+.txt
Location: EveryFolder

Technical indicators

Associated executable files

The following executable files are associated with Makop ransomware:

About this analysis

This Makop 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 Makop.

Last updated: December 30, 2025

Detection coverage

Elastio detects Makop inside your data and backups.

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