ChiChi Ransomware
ChiChi is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick facts
How ChiChi ransomware works
File encryption patterns
ChiChi modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, ChiChi displays ransom notes demanding payment for file recovery:
notes/Guide To Recover Your Files.txt
notes/HowToDecrypt.txt
Technical indicators
Associated executable files
The following executable files are associated with ChiChi ransomware:
- e_win.exe
About this analysis
This ChiChi ransomware analysis is part of Elastio's comprehensive ransomware detection database. Elastio provides advanced ransomware protection and recovery, helping organizations defend against and recover from ransomware attacks like ChiChi.
Last updated: December 30, 2025
Elastio detects ChiChi inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ChiChi across live data, replicated data, and backups. If this family is in your environment, Elastio finds it before encryption completes. Run a scan against your recovery points to confirm.
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