ハッシュ / 情報値
SHA25692f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed
MD51737388ce8b0b5fc2dbc22f5b7352b7c
SHA1e62135254b3a51f0180e70a11e4c3ad4a59f81c4
ImpHashe5b44ef262abbb9d728bbe03f8aa847e
ファイル Adi92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed.bin
ファイル種別exe
サイズ361,536 bytes
初回確認2020-10-27

Tehdit 値lendirmesi

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

検出された機能

  • ファイル Sifreleme
  • Golge Kopya Silme
  • Fidye Notu
  • Yedek Yok Etme
  • Veri Sizdirma

MalwareBazaar タグ

ObsidiumpackedRansomwareRyuk

解析メモ

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

Ryuk — マルウェアプロファイル

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.

マルウェアの種類
Ransomware
プログラミング言語
C
C2プロトコル
—
標的システム
Windows

技術詳細

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.

アトリビューション / 脅威アクター

WIZARD SPIDER (linked to Hermes/Lazarus initial code)

機能と挙動

Dosya Şifreleme (AES/RSA)
Gölge Kopya Silme
Yedek Kaldırma
Fidye Notu Oluşturma
Kalıcılık Sağlama
Ağ Paylaşımı Şifreleme
Anti-Analiz Teknikleri
Çift Gasp (Data Leak)

IOCリスト (2 件の指標)

IOC — Ryuk
# SHA256 92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed # MD5 1737388ce8b0b5fc2dbc22f5b7352b7c
タイプ値メモ
sha256 92f124ea5217f3fe5cbab1c37a961df0437d5a9cbde1af268c60c4b3194b80ed
md5 1737388ce8b0b5fc2dbc22f5b7352b7c
Ryuk — 完全プロファイルへ →

C2サーバー (このファミリーで2台のサーバーを記録)

アドレス タイプ ポート プロトコル ステータス 国
51.161.204.106 ip 443 HTTPS sinkholed CA
162.119.249.198 ip 443 HTTPS sinkholed US

C2アドレスはKEYDALチームが手動で検証したマルウェア検体のみに基づいて提供されています。商用利用は禁止です。

タグ
ObsidiumpackedRansomwareRyuk