Ransomware Research
Atom Ransomware
Atom is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Atom
- First Seen
- September 1, 2016
How Atom Ransomware Works
Targeted Files
NOSAMPLE https://www.fortinet.com/blog/threat-research/from-shark-to-atom-ransomware-service-offers-generous-returns https://www.bleepingcomputer.com/news/security/shark-ransomware-rebrands-as-atom-for-a-fresh-start/
File Encryption Patterns
Atom modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
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About This Analysis
This Atom 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 Atom.
Last updated: July 30, 2025