Ransomware Research
FabSysCrypto Ransomware
FabSysCrypto is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- FabSysCrypto
- First Seen
- March 1, 2017
How FabSysCrypto Ransomware Works
File Encryption Patterns
FabSysCrypto modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..lockedRansom Note and Payment Demands
After encrypting files, FabSysCrypto displays ransom notes demanding payment for file recovery:
_HELP_instructions.txtRansom message:
notes/_HELP_instructions.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with FabSysCrypto ransomware:
fabsyscrypto.exe
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About This Analysis
This FabSysCrypto 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 FabSysCrypto.
Last updated: July 30, 2025