Ransomware Research
LanRan Ransomware
LanRan is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- LanRan
- First Seen
- March 1, 2017
How LanRan Ransomware Works
Targeted Files
https://www.bleepingcomputer.com/forums/f/239/ransomware-help-tech-support Encrypts filenames -> Biblio.mdb -> GZ0gbOtaBR.LanRan
File Encryption Patterns
LanRan modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..LanRanRansom Note and Payment Demands
After encrypting files, LanRan displays ransom notes demanding payment for file recovery:
@___help My.ExeNote locations:
EveryFolderRansom message:
notes/img.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with LanRan ransomware:
help.Exe@___help___@.exeLanRan.exepic.exelan.exe
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About This Analysis
This LanRan 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 LanRan.
Last updated: July 30, 2025