Ransomware Research

Zeropadypt Ransomware

Zeropadypt is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on July 1, 2019, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: Ouroboros.

Quick Facts

Ransomware Family
Zeropadypt
First Seen
July 1, 2019
Known Aliases
Ouroboros

How Zeropadypt Ransomware Works

File Encryption Patterns

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

File extensions added after encryption:

..limbo..Lazarus..Lazarus+..KRONOS..Angus..lol..hiddenhelp..James..odveta..rx99..Bitdefender..Ouchachia..rails..vash..encrypt..bom..Cypher..baxter..Arm,

Ransom Note and Payment Demands

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

fileRead-Me-Now.txt

Ransom message:

notes/Read-Me-Now.txt

Note locations:

EveryFolder
fileDECRYPTION_GUIDANCE.txt

Ransom message:

notes/DECRYPTION_GUIDANCE.txt

Note locations:

EveryFolder
file!INFO.HTA

Ransom message:

notes/!INFO.HTA

Note locations:

EveryFolder
fileHowToDecrypt.txt

Ransom message:

notes/HowToDecrypt.txt

Note locations:

EveryFolder
fileUnlock-Files.txt

Ransom message:

notes/Unlock-Files.txt

Note locations:

EveryFolder
fileDecrypt-me.txt

Ransom message:

notes/Decrypt-me.txt

Note locations:

EveryFolder
fileHow_to_Unlock-Files.txt

Ransom message:

notes/How_to_Unlock-Files.txt
fileHow_to_Unlock_Files.txt

Ransom message:

notes/How_to_Unlock_Files.txt

Note locations:

RootDiscsDesktop
fileUnlock_Files.txt

Ransom message:

notes/Unlock_Files.txt

Technical Indicators

Associated Executable Files

The following executable files are associated with Zeropadypt ransomware:

  • letitbedecryptedzi.exe
  • unlockme123@protonmail.com.bin
  • unlockme123@protonmail.com.exe
  • Mr.TeslaBrain@gmail.com.exe
  • Rezcrypt@cock.li_Kronos.exe
  • WpfApp1.exe
  • uiapp.exe
  • out
  • svchost.exe1
  • ZX.exe
  • sys-dll-updater.exe
  • Encrypt.exe
  • Hi.exe
  • ours.bin
  • out.exe
  • Ouroborosv7.exe
  • Windows Session Manager.exe

Recovery and Decryption Tools

Good news! Decryption tools are available for Zeropadypt ransomware:

0

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About This Analysis

This Zeropadypt 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 Zeropadypt.

Last updated: October 30, 2025

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