HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256bf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d
MD54ca68bf3d630332e9c19a17ac910376e
File Typeexe
Size116.8 KB
First Seen2025-04-10
File Namebf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d
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: bf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d
  • MD5: 4ca68bf3d630332e9c19a17ac910376e

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: bf417334cd777c50"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "bf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d"
}

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 bf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d # MD5 4ca68bf3d630332e9c19a17ac910376e
TypeValueNote
sha256 bf417334cd777c5073e2a3f30497aa8fcb16feabdc391d77a59ce23fb4a07d7d Sample:HelloKitty
md5 4ca68bf3d630332e9c19a17ac910376e Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi