Ryuk | 威胁等级: critical | 类型: Ransomware

加密标识符

SHA25679a98588b501d1fdb5de009a49dccaaf2f7683407c856f5007c062f36823aad0
MD58e62455d24fa491c46f5c7201084ca76
文件类型exe
大小2501.7 KB
首次发现2023-03-10
文件名2023-03-09_8e62455d24fa491c46f5c7201084ca76_ryuk
标签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: 79a98588b501d1fdb5de009a49dccaaf2f7683407c856f5007c062f36823aad0
  • MD5: 8e62455d24fa491c46f5c7201084ca76

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: 79a98588b501d1fd"
        threat_level = "critical"
        first_seen = "2023-03-10"
    condition:
        hash.sha256(0, filesize) == "79a98588b501d1fdb5de009a49dccaaf2f7683407c856f5007c062f36823aad0"
}

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 79a98588b501d1fdb5de009a49dccaaf2f7683407c856f5007c062f36823aad0 # MD5 8e62455d24fa491c46f5c7201084ca76
类型值备注
sha256 79a98588b501d1fdb5de009a49dccaaf2f7683407c856f5007c062f36823aad0
md5 8e62455d24fa491c46f5c7201084ca76
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