Ransomware Research
CryptoPatronum Ransomware
CryptoPatronum 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.
Quick Facts
- Ransomware Family
- CryptoPatronum
- First Seen
- January 1, 2020
How CryptoPatronum Ransomware Works
Targeted Files
Full extension -> .cryptopatronum@protonmail.com.enc Sandbox checks; Key exchange via C&C
File Encryption Patterns
CryptoPatronum modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..encRansom Note and Payment Demands
After encrypting files, CryptoPatronum displays ransom notes demanding payment for file recovery:
HOW TO RECOVER ENCRYPTED FILES.txtRansom message:
notes/HOW TO RECOVER ENCRYPTED FILES.txt
Note locations:
RootDirectoryTechnical Indicators
Associated Executable Files
The following executable files are associated with CryptoPatronum ransomware:
crsss.exewininit.exe
Elastio Can Help You
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About This Analysis
This CryptoPatronum 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 CryptoPatronum.
Last updated: July 30, 2025