Ransomware Research

OCEANS Ransomware

OCEANS is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2024, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
OCEANS
First Seen
May 1, 2024

How OCEANS Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

./\.[a-z0-9]{4}$/

Ransom Note and Payment Demands

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

fileOPEN_THIS.txt

Ransom message:

notes/OPEN_THIS.txt

Note locations:

EveryFolder
screenshot

Ransom message:

notes/yu76i01ds.jpg

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with OCEANS ransomware:

  • UPDATE~1.EXE
  • Update 1.28.exe

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About This Analysis

This OCEANS 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 OCEANS.

Last updated: October 30, 2025

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