Ryuk | 威胁等级: critical | 类型: Ransomware

加密标识符

SHA256e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399
MD5a6db1982f3c144576f1fa5bea0e95f64
文件类型exe
大小123.5 KB
首次发现2020-10-27
文件名e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399.bin
标签Ransomware, Ryuk

恶意软件家族: Ryuk

Ryuk, hastane hedefler.

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

威胁指标 (IOC)

  • SHA256: e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399
  • MD5: a6db1982f3c144576f1fa5bea0e95f64

您可以在 VirusTotal 上验证此样本的所有哈希值。

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. 向执法部门(网络犯罪部门)报案
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA 规则提示

rule Ryuk_SHA256 {
    meta:
        description = "Ryuk sample: e8a0e80dfc520bf7"
        threat_level = "critical"
        first_seen = "2020-10-27"
    condition:
        hash.sha256(0, filesize) == "e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399"
}

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 e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399 # MD5 a6db1982f3c144576f1fa5bea0e95f64
类型备注
sha256 e8a0e80dfc520bf7e76c33a90ed6d286e8729e9defe6bb7da2f38bc2db33f399 Sample:Ryuk
md5 a6db1982f3c144576f1fa5bea0e95f64 Sample:Ryuk

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
ryukransomwaremalwarecriticalsha256hash-analizi