HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256ac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03
MD5176bfe9ab5a14115ff5b90b07626cb64
File Typeexe
Size152.4 KB
First Seen2025-04-10
File Nameac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03
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: ac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03
  • MD5: 176bfe9ab5a14115ff5b90b07626cb64

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: ac23f1970395ff14"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "ac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03"
}

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 ac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03 # MD5 176bfe9ab5a14115ff5b90b07626cb64
TypeValueNote
sha256 ac23f1970395ff1429dd6738261eb25ad8f695b46a4816056924c8fc97dcec03 Sample:HelloKitty
md5 176bfe9ab5a14115ff5b90b07626cb64 Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi