Ransomware Research

DilmaLocker Ransomware

DilmaLocker is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on September 1, 2017, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
DilmaLocker
First Seen
September 1, 2017

How DilmaLocker Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..__dilmaV1

Ransom Note and Payment Demands

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

fileRECUPERE_SEUS_ARQUIVOS.html

Ransom message:

notes/RECUPERE_SEUS_ARQUIVOS.html

Note locations:

Desktop
screenshot

Ransom message:

notes/background.bmp

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with DilmaLocker ransomware:

  • adobe_reader
  • AdobeRd32.exe
  • Alex-Barbosa--curriculo-vitae-2017.pdf.exe

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About This Analysis

This DilmaLocker 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 DilmaLocker.

Last updated: October 30, 2025

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