Ransomware Research

Penta Ransomware

Penta is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on August 1, 2021, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Penta
First Seen
August 1, 2021

How Penta Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..PENTA

Ransom Note and Payment Demands

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

filePENTA_README.txt

Ransom message:

notes/PENTA_README.txt

Note locations:

EveryFolder
screenshot

Ransom message:

notes/tse4egsas.png

Note locations:

Desktop

Technical Indicators

Associated Executable Files

The following executable files are associated with Penta ransomware:

  • PENTA.exe
  • PENTA_RANSOMWARE.exe
  • penta.exe
  • aaa.exe
  • hi.exe

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About This Analysis

This Penta 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 Penta.

Last updated: July 30, 2025

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