Ransomware Research
Arsium Ransomware
Arsium is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2019, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Arsium
- First Seen
- August 1, 2019
How Arsium Ransomware Works
File Encryption Patterns
Arsium modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..0000Technical Indicators
Associated Executable Files
The following executable files are associated with Arsium ransomware:
ezfzef.exeBuilder 3 DLL.exeArsium Ransomware Builder [DLL] [DESKTOP].exe
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About This Analysis
This Arsium 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 Arsium.
Last updated: July 30, 2025