Ransomware Research

HappyDayzz Ransomware

HappyDayzz is a malicious ransomware strain that encrypts victim files and demands ransom payment for decryption. First observed in the wild on March 1, 2017, this ransomware has been actively targeting systems worldwide. Security researchers also track this malware under the aliases: BlackJockerCrypter.

Quick Facts

Ransomware Family
HappyDayzz
First Seen
March 1, 2017
Known Aliases
BlackJockerCrypter

How HappyDayzz Ransomware Works

Targeted Files

Written in AutoIT Full filename -> [blackjockercrypter@gmail.com].CAEA547A94450D0BBF2034.happydayzzz

File Encryption Patterns

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

File extensions added after encryption:

..happydayzz

Prefixes added to encrypted files:

[blackjockercrypter@gmail.com]

Ransom Note and Payment Demands

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

fileHow To Recover Encrypted Files.hta

Ransom message:

notes/How To Recover Encrypted Files.hta

Note locations:

EveryFolder
fileHow To Recover Encrypted Files.html

Ransom message:

notes/How To Recover Encrypted Files.html

Note locations:

EveryFolder

Technical Indicators

Associated Executable Files

The following executable files are associated with HappyDayzz ransomware:

  • HappyDayZZZ.exe
  • protectedpinkpanter.exe
  • adminlogin.ex_
  • tmp_27581-protectedpinkpanter435215626.exe
  • adminlogin.exe
  • HappyDayzz_ransomware

Elastio Can Help You

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About This Analysis

This HappyDayzz 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 HappyDayzz.

Last updated: July 30, 2025

HappyDayzz Ransomware - Detectable by Elastio