Ransomware Research

Tuslamon Ransomware

Tuslamon is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on February 1, 2023, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Tuslamon
First Seen
February 1, 2023

How Tuslamon Ransomware Works

Targeted Files

Skips 0x74 first bytes

File Encryption Patterns

Tuslamon modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..tuslamon

Ransom Note and Payment Demands

After encrypting files, Tuslamon displays ransom notes demanding payment for file recovery:

fileHOW TO DECRYPT FILES.txt

Ransom message:

notes/HOW TO DECRYPT FILES.txt

Note locations:

EveryFolder
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with Tuslamon ransomware:

  • f0l883C310jlvRp.exe

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About This Analysis

This Tuslamon 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 Tuslamon.

Last updated: July 30, 2025

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