HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA2564b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4
MD5a3dc8739c25b9b0c0348fc12fddcef65
File Typeexe
Size473.0 KB
First Seen2025-04-10
File Name4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4
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: 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4
  • MD5: a3dc8739c25b9b0c0348fc12fddcef65

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: 4b082cfa36133e66"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4"
}

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 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 # MD5 a3dc8739c25b9b0c0348fc12fddcef65
TypeValueNote
sha256 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 Sample:HelloKitty
md5 a3dc8739c25b9b0c0348fc12fddcef65 Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi