Ransomware Research
Colab Ransomware
Colab is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on June 1, 2025, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Colab
- First Seen
- June 1, 2025
How Colab Ransomware Works
File Encryption Patterns
Colab modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..colabRansom Note and Payment Demands
After encrypting files, Colab displays ransom notes demanding payment for file recovery:
DECRYPT FILES.txtRansom message:
notes/DECRYPT FILES.txt
Note locations:
UserFoldersStartUpRoamingRansomPayloadStartFolderRansom message:
notes/65z68228g.jpg
Note locations:
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About This Analysis
This Colab 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 Colab.
Last updated: September 30, 2025
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