Ransomware Research

DrWeb Ransomware

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

Quick Facts

Ransomware Family
DrWeb
First Seen
March 1, 2023

How DrWeb Ransomware Works

Targeted Files

Skips first 0x25 bytes

File Encryption Patterns

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

File extensions added after encryption:

..DrWeb

Ransom Note and Payment Demands

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

fileКАК РАСШИФРОВАТЬ ФАЙЛЫ.txt

Ransom message:

notes/КАК РАСШИФРОВАТЬ ФАЙЛЫ.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 DrWeb ransomware:

  • UVF4G43eJVcNx5Z.exe

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About This Analysis

This DrWeb 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 DrWeb.

Last updated: July 30, 2025

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