Ransomware Research

CryptoManiac Ransomware

CryptoManiac is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
CryptoManiac
First Seen
December 1, 2017

How CryptoManiac Ransomware Works

Targeted Files

Written in Python2

File Encryption Patterns

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

File extensions added after encryption:

..maniac

Ransom Note and Payment Demands

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

fileReadme_to_recover_files.txt

Ransom message:

notes/Readme_to_recover_files.txt

Note locations:

EveryFolder
fileReadme_to_recover_files.html

Ransom message:

notes/Readme_to_recover_files.html

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with CryptoManiac ransomware:

  • CryptoManiac.py

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About This Analysis

This CryptoManiac 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 CryptoManiac.

Last updated: July 30, 2025

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