HelloKitty | Threat Level: high | Type: Ransomware
Cryptographic Identifiers
| SHA256 | 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 |
|---|---|
| MD5 | a3dc8739c25b9b0c0348fc12fddcef65 |
| File Type | exe |
| Size | 473.0 KB |
| First Seen | 2025-04-10 |
| File Name | 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 |
| Tags | exe, HelloKitty, Ransomware |
Malware Family: HelloKitty
HelloKitty, CD Projekt Red'e saldırdı.
| Type | Ransomware |
|---|---|
| Programming Language | C++ |
| Target Platform | Windows/Linux |
| C2 Protocol | — |
| Purpose | Oyun şirketi saldırısı |
| First Seen Year | 2020 |
| Aliases | FiveHands |
Threat Indicators (IOC)
- SHA256:
4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 - MD5:
a3dc8739c25b9b0c0348fc12fddcef65
You can verify all hash values of this sample on VirusTotal.
System Cleanup Guide
- Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
- Do not pay the ransom — there is no guarantee your files will be restored
- Quarantine the affected drives
- Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
- Try available decryptor tools (the NoMoreRansom project)
- Report the incident to the authorities (cybercrime unit)
- 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
| Type | Value | Note |
|---|---|---|
| sha256 | 4b082cfa36133e66c3ed8918ed775bd656890c3c7373606d67e0ee9edd6aa3b4 | Sample:HelloKitty |
| md5 | a3dc8739c25b9b0c0348fc12fddcef65 | Sample:HelloKitty |