Ransomware Research
BackLock Ransomware
BackLock is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BackLock
- First Seen
- May 1, 2025
How BackLock Ransomware Works
Targeted Files
Full extension -> .{97F6A37D-7268-D7F3-7DCB-72284ABD03AA}.backlock
File Encryption Patterns
BackLock modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..backlockRansom Note and Payment Demands
After encrypting files, BackLock displays ransom notes demanding payment for file recovery:
README.TXTRansom message:
notes/README.TXT
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BackLock ransomware:
backlock.execkflzaii.exe
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About This Analysis
This BackLock 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 BackLock.
Last updated: July 30, 2025