| Hash / Informação | Valor |
|---|---|
| SHA256 | 92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed |
| MD5 | 1737388ce8b0b5fc2dbc22f5b7352b7c |
| SHA1 | e62135254b3a51f0180e70a11e4c3ad4a59f81c4 |
| ImpHash | e5b44ef262abbb9d728bbe03f8aa847e |
| Arquivo Adi | 92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed.bin |
| Tipo de arquivo | exe |
| Tamanho | 361,536 bytes |
| Primeira detecção | 2020-10-27 |
Tehdit Valorlendirmesi
Bu ornek, kurban sistemindeki dosyaları sifreleyerek erisimi engelleyen ve sifre cozme anahtarı karsılıgında fidye talep eden bir fidye yazılımı olarak analiz edilmistir.
Capacidades detectadas
- Arquivo Sifreleme
- Golge Kopya Silme
- Fidye Notu
- Yedek Yok Etme
- Veri Sizdirma
Tags do MalwareBazaar
Nota de análise
Bu ornek Ryuk ailesine ait ve MalwareBazaar platformundan alınmıstır. KEYDAL Guvenlik Arastirmaları tarafından metadata analizi gerceklestirilmis ve IOC veritabanına eklenmistir.
Ryuk — Perfil do malware
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.
Detalhes técnicos
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.
Atribuição / Ator da ameaça
WIZARD SPIDER (linked to Hermes/Lazarus initial code)
Capacidades e comportamento
Lista IOC (2 indicadores)
# SHA256
92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed
# MD5
1737388ce8b0b5fc2dbc22f5b7352b7c
| Tipo | Valor | Nota |
|---|---|---|
| sha256 | 92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed | |
| md5 | 1737388ce8b0b5fc2dbc22f5b7352b7c |
Servidores C2 (2 servidores registrados para esta família)
| Endereço | Tipo | Porta | Protocolo | Status | País |
|---|---|---|---|---|---|
| 51.161.204.106 | ip | 443 | HTTPS | sinkholed | CA |
| 162.119.249.198 | ip | 443 | HTTPS | sinkholed | US |
Os endereços C2 são fornecidos apenas a partir de amostras de malware verificadas manualmente pela equipe KEYDAL. O uso comercial é proibido.