Ransomware Research
Assembly Ransomware
Assembly is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2018, this ransomware has been actively targeting systems worldwide.
Quick Facts
- Ransomware Family
- Assembly
- First Seen
- March 1, 2018
How Assembly Ransomware Works
Targeted Files
https://app.any.run/tasks/c1201692-42bc-46e7-bfd3-88960163f62e/
File Encryption Patterns
Assembly modifies encrypted files using specific patterns to mark them as encrypted:
File extensions added after encryption:
..lockedRansom Note and Payment Demands
After encrypting files, Assembly displays ransom notes demanding payment for file recovery:
READ_ME.txtRansom message:
notes/READ_ME.txt
Note locations:
DesktopTechnical Indicators
Associated Executable Files
The following executable files are associated with Assembly ransomware:
assembly.exe91df5479bfbee3f8664fea6cef45aa4db30619efab1c67238339ca45a0b16881.bin_used
Elastio Can Help You
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About This Analysis
This Assembly 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 Assembly.
Last updated: July 30, 2025