Ransomware Research
T1Happy Ransomware
T1Happy is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on January 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- T1Happy
- First Seen
- January 1, 2019
How T1Happy Ransomware Works
File Encryption Patterns
T1Happy modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..happyRansom Note and Payment Demands
After encrypting files, T1Happy displays ransom notes demanding payment for file recovery:
HIT BY RANSOMWARE.txtRansom message:
notes/HIT BY RANSOMWARE.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with T1Happy ransomware:
a.exeT1.exeT1.binb.exehappy2.exed.exehappy4.exec.exehappy3.exe
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About This Analysis
This T1Happy 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 T1Happy.
Last updated: October 30, 2025
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