Ryuk — Örnek SHA256: a9643eb8 | Critical Tehdit Analizi

Cryptographic Identifiers

Malware Family: Ryuk

Ryuk, hastane hedefler.

Threat Indicators (IOC)

• SHA256: a9643eb83d509ad4eac20a2a89d8571f8d781979ad078e89f5b75b4bcb16f65e
• MD5: 987336d00fdbec3bcdb95b078f7de46f

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 Ryuk_SHA256 {
    meta:
        description = "Ryuk sample: a9643eb83d509ad4"
        threat_level = "critical"
        first_seen = "2023-03-09"
    condition:
        hash.sha256(0, filesize) == "a9643eb83d509ad4eac20a2a89d8571f8d781979ad078e89f5b75b4bcb16f65e"
}