Ransomware Research

Rapid-2 Ransomware

Rapid-2 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2018, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Rapid 2.0.

Quick Facts

Ransomware Family
Rapid-2
First Seen
March 1, 2018
Known Aliases
Rapid 2.0

How Rapid-2 Ransomware Works

File Encryption Patterns

Rapid-2 modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

./\.[A-Z]{5}$/

Ransom Note and Payment Demands

After encrypting files, Rapid-2 displays ransom notes demanding payment for file recovery:

file/^DECRYPT\.[A-Z]{5}\.txt$/

Ransom message:

notes/DECRYPT.SZRJS.txt

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with Rapid-2 ransomware:

  • rapid20.exe
  • 127551406_build.exe
  • Rapid2.0.exe

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About This Analysis

This Rapid-2 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 Rapid-2.

Last updated: July 30, 2025

Rapid-2 Ransomware - Detectable by Elastio