| Hash / Bilgi | Deger |
|---|---|
| SHA256 | 327da452b8c86ed8910056646771de8fb92a928c3d135efb2d41e6cb26806382 |
| MD5 | 42513d9fbd45e442f8f499a7bb5746a2 |
| SHA1 | 22125167e6a660a458101110d493ef1e4f7173b9 |
| ImpHash | 9ce648a01015a6754959ff9990c7e2fa |
| Dosya Adi | Report-Review22-10.exe |
| Dosya Türü | exe |
| Boyut | 8,066,816 bytes |
| Ilk Görülme | 2020-10-22 |
Tehdit Degerlendirmesi
Bu ornek, kurban sistemindeki dosyaları sifreleyerek erisimi engelleyen ve sifre cozme anahtarı karsılıgında fidye talep eden bir fidye yazılımı olarak analiz edilmistir.
Tespit Edilen Yetenekler
- Dosya Sifreleme
- Golge Kopya Silme
- Fidye Notu
- Yedek Yok Etme
- Veri Sizdirma
MalwareBazaar Etiketleri
Analiz Notu
Bu ornek Ryuk ailesine ait ve MalwareBazaar platformundan alınmıstır. KEYDAL Guvenlik Arastirmaları tarafından metadata analizi gerceklestirilmis ve IOC veritabanına eklenmistir.
Ryuk — Malware Profile
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.
Technical Details
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.
Attribution / Threat Actor
WIZARD SPIDER (linked to Hermes/Lazarus initial code)
Capabilities & Behavior
IOC List (2 indicators)
# SHA256
327da452b8c86ed8910056646771de8fb92a928c3d135efb2d41e6cb26806382
# MD5
42513d9fbd45e442f8f499a7bb5746a2
| Type | Value | Note |
|---|---|---|
| sha256 | 327da452b8c86ed8910056646771de8fb92a928c3d135efb2d41e6cb26806382 | |
| md5 | 42513d9fbd45e442f8f499a7bb5746a2 |
C2 Servers (2 recorded servers for this family)
| Address | Type | Port | Protocol | Status | Country |
|---|---|---|---|---|---|
| 51.161.204.106 | ip | 443 | HTTPS | sinkholed | CA |
| 162.119.249.198 | ip | 443 | HTTPS | sinkholed | US |
C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.