Ransomware Research

BiggyLocker Ransomware

BiggyLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2021, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
BiggyLocker
First Seen
July 1, 2021

How BiggyLocker Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..$big$

Ransom Note and Payment Demands

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

fileread_me.txt

Ransom message:

notes/read_me.txt

Note locations:

EveryFolder

Elastio Can Help You

Don't let BiggyLocker ransomware take over your data

Elastio provides advanced ransomware protection and recovery solutions to keep your organization safe.

About This Analysis

This BiggyLocker ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery solutions, helping organizations defend against and recover from ransomware attacks like BiggyLocker.

Last updated: July 30, 2025

BiggyLocker Ransomware - Detectable by Elastio