HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA2563b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327
MD5a831d838a924ea135c3e0f315f73fcd3
File Typeexe
Size217.0 KB
First Seen2025-04-10
File Name3b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327
Tagsexe, HelloKitty, Ransomware

Malware Family: HelloKitty

HelloKitty, CD Projekt Red'e saldırdı.

TypeRansomware
Programming LanguageC++
Target PlatformWindows/Linux
C2 Protocol
PurposeOyun şirketi saldırısı
First Seen Year2020
AliasesFiveHands

Threat Indicators (IOC)

  • SHA256: 3b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327
  • MD5: a831d838a924ea135c3e0f315f73fcd3

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Do not pay the ransom — there is no guarantee your files will be restored
  3. Quarantine the affected drives
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Try available decryptor tools (the NoMoreRansom project)
  6. Report the incident to the authorities (cybercrime unit)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule HelloKitty_SHA256 {
    meta:
        description = "HelloKitty sample: 3b64b861af1779df"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "3b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327"
}

HelloKitty — Malware Profile

HelloKitty (DeathRansom/FiveHands) RaaS. Tor .onion C2. WMI Win32_ShadowCopy silme. VMware ESXi hedefi. CD Projekt Red.

Malware Type
Ransomware
Programming Language
C++
C2 Protocol
Target Systems
Windows/Linux
Also Known As (AKA)
FiveHands

Capabilities & Behavior

Dosya Şifreleme (AES/RSA)
Gölge Kopya Silme
Yedek Kaldırma
Fidye Notu Oluşturma
Kalıcılık Sağlama
Ağ Paylaşımı Şifreleme
Anti-Analiz Teknikleri
Çift Gasp (Data Leak)

IOC List (2 indicators)

IOC — HelloKitty
# SHA256 3b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327 # MD5 a831d838a924ea135c3e0f315f73fcd3
TypeValueNote
sha256 3b64b861af1779df860a1e8d480bbe5b775acee19ca8c3b64c9005d8c64eb327 Sample:HelloKitty
md5 a831d838a924ea135c3e0f315f73fcd3 Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi