HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256bc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26
MD5a91d55cb6f5d7328a2a778c203177221
File Typeexe
Size165.0 KB
First Seen2025-04-10
File Namebc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26
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: bc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26
  • MD5: a91d55cb6f5d7328a2a778c203177221

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: bc10f7d483b8fac6"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "bc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26"
}

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 bc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26 # MD5 a91d55cb6f5d7328a2a778c203177221
TypeValueNote
sha256 bc10f7d483b8fac6652edb4cee39e2dfb0163822957e02191ebf70e2b968ed26 Sample:HelloKitty
md5 a91d55cb6f5d7328a2a778c203177221 Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi