HelloKitty | Threat Level: high | Type: Ransomware

Cryptographic Identifiers

SHA256ef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e
MD557824214710bc0cdb22463571a72afd0
File Typeexe
Size249.5 KB
First Seen2025-04-10
File Nameef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e
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: ef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e
  • MD5: 57824214710bc0cdb22463571a72afd0

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: ef614b456ca4eaa8"
        threat_level = "high"
        first_seen = "2025-04-10"
    condition:
        hash.sha256(0, filesize) == "ef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e"
}

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 ef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e # MD5 57824214710bc0cdb22463571a72afd0
TypeValueNote
sha256 ef614b456ca4eaa8156a895f450577600ad41bd553b4512ae6abf3fb8b5eb04e Sample:HelloKitty
md5 57824214710bc0cdb22463571a72afd0 Sample:HelloKitty
Tags
hellokittyransomwaremalwarehighsha256hash-analizi