Ransomware Research
Cripto Py Ransomware
Cripto Py is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2020, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Cripto, CriptoPy.
Quick Facts
- Ransomware Family
- Cripto Py
- First Seen
- January 1, 2020
- Known Aliases
- CriptoCriptoPy
How Cripto Py Ransomware Works
Targeted Files
Doesn't encrypt; Changes extensions, encodes contents with base-64 Written in Python 3.7 (PyInstaller) Bugged code (ransom note will be created in the last traversed folder)
File Encryption Patterns
Cripto Py modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..criptoRansom Note and Payment Demands
After encrypting files, Cripto Py displays ransom notes demanding payment for file recovery:
hackeado.txtRansom message:
notes/hackeado.txt
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About This Analysis
This Cripto Py 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 Cripto Py.
Last updated: July 30, 2025