Ransomware Research
BKRansomware Ransomware
BKRansomware is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: BK.
Quick Facts
- Ransomware Family
- BKRansomware
- First Seen
- May 1, 2018
- Known Aliases
- BK
How BKRansomware Ransomware Works
Targeted Files
Encrypts different blocks
File Encryption Patterns
BKRansomware modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..hainhcRansom Note and Payment Demands
After encrypting files, BKRansomware 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 BKRansomware ransomware:
BKRansomware.exe
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About This Analysis
This BKRansomware 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 BKRansomware.
Last updated: July 30, 2025