Kryptografische Kennungen
| SHA256 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9 |
|---|---|
| MD5 | 2cc630e080bb8de5faf9f5ae87f43f8b |
| Dateityp | exe |
| Größe | 131.0 KB |
| Erstsichtung | 2023-11-20 |
| Dateiname | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9.exe |
| Tags | exe, Ransomware, Ryuk |
Malware-Familie: Ryuk
Ryuk, Wizard Spider ile ilişkilidir.
| Typ | Ransomware |
|---|---|
| Programmiersprache | C |
| Zielplattform | Windows |
| C2-Protokoll | — |
| Zweck | Hastane hedefli ransomware |
| Jahr der Erstsichtung | 2018 |
Bedrohungsindikatoren (IOC)
- SHA256:
d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9 - MD5:
2cc630e080bb8de5faf9f5ae87f43f8b
Anleitung zur Systembereinigung
- Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
- Zahlen Sie kein Lösegeld — es gibt keine Garantie für die Wiederherstellung
- Stellen Sie die betroffenen Laufwerke unter Quarantäne
- Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
- Probieren Sie verfügbare Entschlüsselungstools (Projekt NoMoreRansom)
- Yetkililere ihbarda bulunun
- Temiz bir yedekten kurtarın
Hinweise für YARA-Regeln
rule Ryuk_SHA256 {
meta:
description = "Ryuk sample: d6b7b27e13700aaa"
threat_level = "critical"
first_seen = "2023-11-20"
condition:
hash.sha256(0, filesize) == "d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9"
}
Ryuk — Malware-Profil
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.
Technische 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 / Bedrohungsakteur
WIZARD SPIDER (linked to Hermes/Lazarus initial code)
Fähigkeiten & Verhalten
IOC-Liste (2 Indikatoren)
# SHA256
d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9
# MD5
2cc630e080bb8de5faf9f5ae87f43f8b
| Typ | Wert | Bemerkung |
|---|---|---|
| sha256 | d6b7b27e13700aaa7f108bf9e76473717a7a1665198e9aafcc2d2227ca11bba9 | |
| md5 | 2cc630e080bb8de5faf9f5ae87f43f8b |
C2-Server (2 erfasste Server für diese Familie)
| Adresse | Typ | Port | Protokoll | Status | Land |
|---|---|---|---|---|---|
| 51.161.204.106 | ip | 443 | HTTPS | sinkholed | CA |
| 162.119.249.198 | ip | 443 | HTTPS | sinkholed | US |
C2-Adressen stammen ausschließlich aus vom KEYDAL-Team manuell verifizierten Malware-Samples. Kommerzielle Nutzung ist untersagt.