Ryuk | 威胁等级: critical | 类型: Ransomware

加密标识符

SHA25661e88158da4636ab0c11db75e376f42e11a02ebe0387223934fb10944b52794f
MD5e163fbce2507c89a106c8ad001dc099a
文件类型lnk
大小1.1 KB
首次发现2022-03-21
文件名Image-8646-ZP.jpg.lnk
标签lnk, Ryuk

恶意软件家族: Ryuk

Ryuk, Wizard Spider ile ilişkilidir.

类型Ransomware
编程语言C
目标平台Windows
C2 协议—
用途Hastane hedefli ransomware
首次发现年份2018

威胁指标 (IOC)

  • SHA256: 61e88158da4636ab0c11db75e376f42e11a02ebe0387223934fb10944b52794f
  • MD5: e163fbce2507c89a106c8ad001dc099a

系统清理指南

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. 不要支付赎金——无法保证恢复文件
  3. 隔离受影响的驱动器
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. 尝试可用的解密工具（NoMoreRansom 项目）
  6. Yetkililere ihbarda bulunun
  7. Temiz bir yedekten kurtarın

YARA 规则提示

rule Ryuk_SHA256 {
    meta:
        description = "Ryuk sample: 61e88158da4636ab"
        threat_level = "critical"
        first_seen = "2022-03-21"
    condition:
        hash.sha256(0, filesize) == "61e88158da4636ab0c11db75e376f42e11a02ebe0387223934fb10944b52794f"
}

Ryuk — 恶意软件档案

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.

恶意软件类型
Ransomware
编程语言
C
C2协议
—
目标系统
Windows

技术细节

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.

归因 / 威胁行为者

WIZARD SPIDER (linked to Hermes/Lazarus initial code)

能力与行为

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列表 (2 个指标)

IOC — Ryuk
# SHA256 61e88158da4636ab0c11db75e376f42e11a02ebe0387223934fb10944b52794f # MD5 e163fbce2507c89a106c8ad001dc099a
类型值备注
sha256 61e88158da4636ab0c11db75e376f42e11a02ebe0387223934fb10944b52794f
md5 e163fbce2507c89a106c8ad001dc099a
Ryuk — 查看完整档案 →

C2服务器 (该家族共有 2 台已记录服务器)

地址 类型 端口 协议 状态 国家
51.161.204.106 ip 443 HTTPS sinkholed CA
162.119.249.198 ip 443 HTTPS sinkholed US

C2 地址仅来自 KEYDAL 团队人工验证的恶意软件样本。禁止用于商业用途。

标签
ryukransomwaremalwarecriticalsha256analizzenginleştirilmiş