Ransomware Research

DelphiTear Ransomware

DelphiTear is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on November 1, 2018, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
DelphiTear
First Seen
November 1, 2018

How DelphiTear Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..locked

Ransom Note and Payment Demands

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

fileHowToDecrypt.txt

Ransom message:

notes/HowToDecrypt.txt

Note locations:

Desktop
message

Ransom message:

notes/note.txt

Note locations:

OnceOnCompletion

Technical Indicators

Associated Executable Files

The following executable files are associated with DelphiTear ransomware:

  • delphitear-master.exe

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About This Analysis

This DelphiTear 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 DelphiTear.

Last updated: July 30, 2025

DelphiTear Ransomware - Detectable by Elastio