Ransomware Research

NMoreira Ransomware

NMoreira is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2016, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Fake Maktub.

Quick facts

Ransomware Family
NMoreira
First Seen
November 1, 2016
Known Aliases
Fake Maktub

How NMoreira ransomware works

File encryption patterns

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

Extensions added after encryption
.maktub

Ransom note and payment demands

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

fileRecupere seus arquivos. Leia-me!.txt
notes/Recupere seus arquivos. Leia-me!.txt
Location: EveryFolder

About this analysis

This NMoreira 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 NMoreira.

Last updated: December 30, 2025

Detection coverage

Elastio detects NMoreira inside your data and backups.

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