Ransomware Research
ChinaYunLong Ransomware
ChinaYunLong is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- ChinaYunLong
- First Seen
- July 1, 2017
How ChinaYunLong Ransomware Works
Targeted Files
Ransom not doesn't displays correctly on the screen (in Chinese)
File Encryption Patterns
ChinaYunLong modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..ylRansom Note and Payment Demands
After encrypting files, ChinaYunLong displays ransom notes demanding payment for file recovery:
Note locations:
LoginTechnical Indicators
Associated Executable Files
The following executable files are associated with ChinaYunLong ransomware:
3d2de057901b9a94_yl.exeChinaYunLong.exezi%20liao%20guan%20jia%20v1.0.exeyl.exe
Elastio Can Help You
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About This Analysis
This ChinaYunLong 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 ChinaYunLong.
Last updated: July 30, 2025