Ransomware Research
Sabbath Ransomware
Sabbath is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on October 1, 2021, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: 54bb47h.
Quick Facts
- Ransomware Family
- Sabbath
- First Seen
- October 1, 2021
- Known Aliases
- 54bb47h
How Sabbath Ransomware Works
Targeted Files
NOSAMPLE https://web.archive.org/web/20211122180636/http://54bb47h.blog/ https://www.bleepingcomputer.com/forums/t/760499/sabbath-ransomware-54bb47h-support-topic/?hl=+54bb47h https://www.mandiant.com/resources/blog/sabbath-ransomware-affiliate
File Encryption Patterns
Sabbath modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..54bb47hRansom Note and Payment Demands
After encrypting files, Sabbath displays ransom notes demanding payment for file recovery:
DECRYPTION.htaRansom message:
notes/DECRYPTION.hta
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About This Analysis
This Sabbath 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 Sabbath.
Last updated: July 30, 2025