Ransomware Research
Shiva Ransomware
Shiva is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on December 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Shiva
- First Seen
- December 1, 2018
How Shiva Ransomware Works
File Encryption Patterns
Shiva modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..jbkubZcJIdUb./\.[a-zA-Z0-9]{6}$/Ransom Note and Payment Demands
After encrypting files, Shiva displays ransom notes demanding payment for file recovery:
READ_IT.htmlRansom message:
notes/READ_IT.html
Note locations:
EveryFolderShivaKEY.txtRansom message:
notes/ShivaKEY.txt
Note locations:
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About This Analysis
This Shiva 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 Shiva.
Last updated: July 30, 2025