Ransomware Research
TBlocker Ransomware
TBlocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- TBlocker
- First Seen
- February 1, 2018
How TBlocker Ransomware Works
Targeted Files
Encrypts only userfolders (not recursively)
File Encryption Patterns
TBlocker modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
._Ransom Note and Payment Demands
After encrypting files, TBlocker displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Note locations:
OnceOnCompletionTechnical Indicators
Associated Executable Files
The following executable files are associated with TBlocker ransomware:
TBlocker.exe
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About This Analysis
This TBlocker 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 TBlocker.
Last updated: July 30, 2025