Ransomware Research
Nemucod-7z Ransomware
Nemucod-7z is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on April 1, 2016, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Nemucod-7z
- First Seen
- April 1, 2016
How Nemucod-7z Ransomware Works
File Encryption Patterns
Nemucod-7z modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..cryptedRansom Note and Payment Demands
After encrypting files, Nemucod-7z displays ransom notes demanding payment for file recovery:
DECRYPT.txtRansom message:
notes/DECRYPT.txt
Technical Indicators
Associated Executable Files
The following executable files are associated with Nemucod-7z ransomware:
myvtfile.exe00000918895.doc.js
Recovery and Decryption Tools
Good news! Decryption tools are available for Nemucod-7z ransomware:
0
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About This Analysis
This Nemucod-7z 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 Nemucod-7z.
Last updated: July 30, 2025