Ransomware Research
Mobef-JustFun Ransomware
Mobef-JustFun is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2020, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Mobef-JustFun
- First Seen
- December 1, 2020
How Mobef-JustFun Ransomware Works
Targeted Files
SECRET.KEYFILE in Every Folder
Ransom Note and Payment Demands
After encrypting files, Mobef-JustFun displays ransom notes demanding payment for file recovery:
IMPORTANT.READMERansom message:
notes/IMPORTANT.README
Note locations:
EveryFolderRansom message:
notes/note.txt
Note locations:
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About This Analysis
This Mobef-JustFun 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 Mobef-JustFun.
Last updated: July 30, 2025