Ransomware Research
BlackBit Ransomware
BlackBit is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2023, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BlackBit
- First Seen
- February 1, 2023
How BlackBit Ransomware Works
Targeted Files
Full extension -> [encrypt.ns@gmail.com][C63F241F]file_example_PPT_250kB.ppt.KTBR
File Encryption Patterns
BlackBit modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..KTBRRansom Note and Payment Demands
After encrypting files, BlackBit displays ransom notes demanding payment for file recovery:
Restore-My-Files.txtRansom message:
notes/Restore-My-Files.txt
Note locations:
EveryFolderTechnical Indicators
Associated Executable Files
The following executable files are associated with BlackBit ransomware:
svchost.exewinlogon.exe
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About This Analysis
This BlackBit 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 BlackBit.
Last updated: July 30, 2025