Ransomware Research

Banks1 Ransomware

Banks1 is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on May 1, 2020, this ransomware has been actively targeting systems worldwide.

Quick Facts

Ransomware Family
Banks1
First Seen
May 1, 2020

How Banks1 Ransomware Works

Targeted Files

.id-XXXXXXXX.[jerjis@tuta.io].banks1; ex -> dbx70.bpl.id-C63F241F.[jerjis@tuta.io].banks1

File Encryption Patterns

Banks1 modifies encrypted files using specific patterns to mark them as encrypted:

File extensions added after encryption:

..banks1

Ransom Note and Payment Demands

After encrypting files, Banks1 displays ransom notes demanding payment for file recovery:

fileReadMe.txt

Ransom message:

notes/ReadMe.txt

Note locations:

EveryFolder
fileinfo.hta

Ransom message:

notes/info.hta

Note locations:

StartUp

Technical Indicators

Associated Executable Files

The following executable files are associated with Banks1 ransomware:

  • ransom.exe
  • 555727610.exe

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About This Analysis

This Banks1 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 Banks1.

Last updated: July 30, 2025

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