Ransomware Research
Bitshifter Ransomware
Bitshifter is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Gollum.
Quick Facts
- Ransomware Family
- Bitshifter
- First Seen
- July 1, 2017
- Known Aliases
- Gollum
How Bitshifter Ransomware Works
Targeted Files
Requires C&C
File Encryption Patterns
Bitshifter modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..gollumRansom Note and Payment Demands
After encrypting files, Bitshifter displays ransom notes demanding payment for file recovery:
ARE_YOU_WANNA_GET_YOUR_FILES_BACK.txtRansom message:
notes/ARE_YOU_WANNA_GET_YOUR_FILES_BACK.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with Bitshifter ransomware:
launcher.exenetwork.exe
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About This Analysis
This Bitshifter 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 Bitshifter.
Last updated: July 30, 2025