Ransomware Research
BitStak Ransomware
BitStak is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- BitStak
- First Seen
- July 1, 2016
How BitStak Ransomware Works
Targeted Files
NOSAMPLE
File Encryption Patterns
BitStak modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..bitstakRansom Note and Payment Demands
After encrypting files, BitStak displays ransom notes demanding payment for file recovery:
Ransom message:
notes/note.txt
Recovery and Decryption Tools
Good news! Decryption tools are available for BitStak ransomware:
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About This Analysis
This BitStak 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 BitStak.
Last updated: July 30, 2025