Ransomware Research
Dark 101 Ransomware
Dark 101 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Dark 101
- First Seen
- January 1, 2025
How Dark 101 Ransomware Works
File Encryption Patterns
Dark 101 modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
./\.[0-9a-z]{4}$/Ransom Note and Payment Demands
After encrypting files, Dark 101 displays ransom notes demanding payment for file recovery:
Dark101_read_it.txtRansom message:
notes/Dark101_read_it.txt
Note locations:
EveryFolderRansom message:
notes/umfji3dl7.jpg
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Dark 101 ransomware:
adobe_photoshop2025.exe
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About This Analysis
This Dark 101 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 Dark 101.
Last updated: October 30, 2025
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