Ransomware Research
BlackByte Ransomware
BlackByte is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2021, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BlackByte
- First Seen
- August 1, 2021
How BlackByte Ransomware Works
Targeted Files
https://github.com/SpiderLabs/BlackByteDecryptor https://redcanary.com/blog/blackbyte-ransomware/ requires a SHA256 hash passed via the command line, which is a unique identifier for the victim.
File Encryption Patterns
BlackByte modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..blackbyteRansom Note and Payment Demands
After encrypting files, BlackByte displays ransom notes demanding payment for file recovery:
BlackByte_restoremyfiles.htaRansom message:
notes/BlackByte_restoremyfiles.hta
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BlackByte ransomware:
obamka.jsforest.png
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About This Analysis
This BlackByte 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 BlackByte.
Last updated: July 30, 2025