Ransomware Research

Brick Ransomware

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

Quick facts

Ransomware Family
Brick
First Seen
February 1, 2020

How Brick ransomware works

File encryption patterns

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

Extensions added after encryption
.brick

Ransom note and payment demands

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

fileID_GENERATE.TXT
notes/ID_GENERATE.TXT
Location: EveryFolder
message
notes/note.txt
Location: OnceOnCompletion

About this analysis

This Brick 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 Brick.

Last updated: December 30, 2025

Detection coverage

Elastio detects Brick inside your data and backups.

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