Ransomware Research

7z Portuguese Ransomware

7z Portuguese 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
7z Portuguese
First Seen
June 1, 2017

How 7z Portuguese ransomware works

File encryption patterns

7z Portuguese modifies encrypted files using specific patterns to mark them as encrypted:

Extensions added after encryption
.7z

Ransom note and payment demands

After encrypting files, 7z Portuguese displays ransom notes demanding payment for file recovery:

fileREAD ME.txt
notes/READ ME.txt

About this analysis

This 7z Portuguese 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 7z Portuguese.

Last updated: December 30, 2025

Detection coverage

Elastio detects 7z Portuguese inside your data and backups.

The Hunt Engine uses Deep File Inspection to identify 7z Portuguese 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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