Ryuk - Report-Review22-10.exe [327da452]

Tehdit Значениеlendirmesi

Bu ornek, kurban sistemindeki dosyaları sifreleyerek erisimi engelleyen ve sifre cozme anahtarı karsılıgında fidye talep eden bir fidye yazılımı olarak analiz edilmistir.

Обнаруженные возможности

• Файл Sifreleme
• Golge Kopya Silme
• Fidye Notu
• Yedek Yok Etme
• Veri Sizdirma

Метки MalwareBazaar

Примечание к анализу

Bu ornek Ryuk ailesine ait ve MalwareBazaar platformundan alınmıstır. KEYDAL Guvenlik Arastirmaları tarafından metadata analizi gerceklestirilmis ve IOC veritabanına eklenmistir.

Ryuk — Профиль вредоносного ПО

Wizard Spider threat group ransomware (2018+). Targets large enterprises, hospitals, municipalities. RyukReadMe.html ransom note. VirtualAllocEx+WriteProcessMemory+CreateRemoteThread injection. GetIpNetTable ARP scan for lateral movement. AdjustTokenPrivileges for SeBackupPrivilege/SeDebugPrivilege.

Тип вредоносного ПО

Ransomware

Язык программирования

C

C2 Протокол

—

Целевые системы

Windows

Технические детали

Ryuk ransomware emerged August 2018, operated by WIZARD SPIDER (TrickBot operators). Targeted large organizations for high ransoms ($100K-$12.5M+ per victim). Distribution: delivered via TrickBot/BazarLoader infections (human-operated). Encryption: RSA-2048 + AES-256 (CBC mode), unique key per file. Stops 40+ Windows services (backup, antivirus, database) and kills >180 processes. Deletes volume shadow copies (vssadmin delete shadows /all /Quiet). Disables Windows recovery: bcdedit /set {default} recoveryenabled No. Network propagation: uses Wake-on-LAN to activate sleeping network hosts for encryption. Believed based on Hermes ransomware sold by a North Korean-linked actor on underground forums. Predecessor to Conti ransomware which emerged from WIZARD SPIDER's operations in 2020.

Атрибуция / Актор угрозы

WIZARD SPIDER (linked to Hermes/Lazarus initial code)

Возможности и поведение

Dosya Şifreleme (AES/RSA)

Gölge Kopya Silme

Yedek Kaldırma

Fidye Notu Oluşturma

Kalıcılık Sağlama

Ağ Paylaşımı Şifreleme

Anti-Analiz Teknikleri

Çift Gasp (Data Leak)

Список IOC (2 индикаторов)

IOC — Ryuk Копировать

# SHA256 327da452b8c86ed8910056646771de8fb92a928c3d135efb2d41e6cb26806382 # MD5 42513d9fbd45e442f8f499a7bb5746a2

Тип	Значение	Примечание
sha256	327da452b8c86ed8910056646771de8fb92a928c3d135efb2d41e6cb26806382
md5	42513d9fbd45e442f8f499a7bb5746a2

C2 Серверы (2 зарегистрированных серверов для этого семейства)

Адрес	Тип	Порт	Протокол	Статус	Страна
51.161.204.106	ip	443	HTTPS	sinkholed	CA
162.119.249.198	ip	443	HTTPS	sinkholed	US

Адреса C2 предоставляются только на основе образцов вредоносного ПО, вручную проверенных командой KEYDAL. Коммерческое использование запрещено.