Ransomware Research
BrainLag Ransomware
BrainLag 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
- BrainLag
- First Seen
- July 1, 2017
How BrainLag Ransomware Works
File Encryption Patterns
BrainLag modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..xdxdlolRansom Note and Payment Demands
After encrypting files, BrainLag displays ransom notes demanding payment for file recovery:
read_me.txtRansom message:
notes/read_me.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with BrainLag ransomware:
hidden-tear.exelocal.exe
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About This Analysis
This BrainLag 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 BrainLag.
Last updated: July 30, 2025