ChinaJm Ransomware
ChinaJm is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick facts
How ChinaJm ransomware works
File encryption patterns
ChinaJm modifies encrypted files using specific patterns to mark them as encrypted:
Ransom note and payment demands
After encrypting files, ChinaJm displays ransom notes demanding payment for file recovery:
notes/ÁªÏµÎÒ,ÇëÎðɾ³ý1625650100797.txt
Technical indicators
Associated executable files
The following executable files are associated with ChinaJm ransomware:
- 简易抽奖小程序-SIGN.exe
About this analysis
This ChinaJm 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 ChinaJm.
Last updated: December 30, 2025
Elastio detects ChinaJm inside your data and backups.
The Hunt Engine uses Deep File Inspection to identify ChinaJm 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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