Ransomware Research
BuSaveLock Ransomware
BuSaveLock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BuSaveLock
- First Seen
- June 1, 2023
How BuSaveLock Ransomware Works
Targeted Files
https://www.hybrid-analysis.com/sample/12f2b9e61268412a8bc5f1885ab29be43065214146a4f7fa141e544d3bf45f93
File Encryption Patterns
BuSaveLock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..busavelock53Ransom Note and Payment Demands
After encrypting files, BuSaveLock displays ransom notes demanding payment for file recovery:
How_to_back_files.htmlRansom message:
notes/How_to_back_files.html
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BuSaveLock ransomware:
busavelock53.exe
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About This Analysis
This BuSaveLock 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 BuSaveLock.
Last updated: July 30, 2025