Ransomware Research

Chinese Coffee Ransomware

Chinese Coffee is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2022, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Chinese Coffee
First Seen
February 1, 2022

How Chinese Coffee Ransomware Works

File Encryption Patterns

Chinese Coffee modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..coffee

Ransom Note and Payment Demands

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

file请阅读我.RSA.txt

Ransom message:

notes/请阅读我.RSA.txt

Note locations:

UserFolders

Technical Indicators

Associated Executable Files

The following executable files are associated with Chinese Coffee ransomware:

  • Updater.exe
  • csrts.exe
  • updater.exe
  • Myou.dll

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About This Analysis

This Chinese Coffee 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 Chinese Coffee.

Last updated: October 30, 2025

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