SmokeLoader | Tehdit Seviyesi: high | Tür: Loader

Kriptografik Tanımlayıcılar

SHA256278593e60722d691fe1b23b22cab15294662bbd2ef8ca1ba8e80ca78e872a813
MD5b3c71fca1351df0d352fe022db1a38dc
Dosya Türüexe
Boyut376.5 KB
İlk Görülme2020-04-16
Dosya Adıldr.exe
EtiketlerCOVID-19, Dofoil, exe, Smoke Loader, SmokeLoader

Malware Ailesi: SmokeLoader

SmokeLoader, loader'dır.

TürLoader
Programlama DiliC
Hedef PlatformWindows
C2 ProtokolüHTTP
AmaçLoader/botnet
İlk Görülen Yıl2011
Diğer İsimlerDofoil

Tehdit Göstergeleri (IOC)

  • SHA256: 278593e60722d691fe1b23b22cab15294662bbd2ef8ca1ba8e80ca78e872a813
  • MD5: b3c71fca1351df0d352fe022db1a38dc

Bu örneğin tüm hash değerlerini VirusTotal üzerinde doğrulayabilirsiniz.

Sistem Temizleme Rehberi

  1. Sistemi ağdan ayırın — Loader başka zararlı yazılım indiriyor olabilir
  2. İndirilen tüm payload'ları analiz edin
  3. Tüm ağ trafiğini inceleyin, şüpheli bağlantıları kesin
  4. Antivirüs ile tam tarama yapın
  5. Sistem yenileme düşünün

YARA Kuralı İpuçları

rule SmokeLoader_SHA256 {
    meta:
        description = "SmokeLoader sample: 278593e60722d691"
        threat_level = "high"
        first_seen = "2020-04-16"
    condition:
        hash.sha256(0, filesize) == "278593e60722d691fe1b23b22cab15294662bbd2ef8ca1ba8e80ca78e872a813"
}

SmokeLoader — 恶意软件档案

SmokeLoader. autoruns.exe Sysinternals version info spoofing. Spaso developer PDB username. stub.pdb loader project artifact.

恶意软件类型
Loader
编程语言
C
C2协议
HTTP
目标系统
Windows
别名 (AKA)
Dofoil

技术细节

SmokeLoader (Dofoil/Smoke Bot) is a modular loader/downloader active since 2011. Primary function: download and execute additional payloads (Emotet, TrickBot, FormBook, Ursnif). Heavy obfuscation: string encryption (RC4+XOR), process injection via APC, code injection. Heaven's Gate technique: switches from 32-bit to 64-bit mode to evade WoW64 hooks. Anti-analysis: CPUID-based VM detection, process listing for analysis tools, timing checks. Uses process hollowing to inject into explorer.exe or svchost.exe. C2 communication: RC4-encrypted HTTP POST requests with bot ID, campaign ID. Sold as pay-per-install (PPI) service on underground forums (~$400/1000 installs). Frequently updated to bypass detection, >100 variants documented.

归因 / 威胁行为者

Unknown (sold on underground forums, multiple operators)

能力与行为

Payload İndirme
Süreç Enjeksiyonu
Modüler Mimari
Kimlik Bilgisi Hırsızlığı
Yanal Hareket
Kalıcılık
Anti-VM/Sandbox
İkincil Payload Dağıtımı

IOC列表 (2 个指标)

IOC — SmokeLoader
# SHA256 278593e60722d691fe1b23b22cab15294662bbd2ef8ca1ba8e80ca78e872a813 # MD5 b3c71fca1351df0d352fe022db1a38dc
类型备注
sha256 278593e60722d691fe1b23b22cab15294662bbd2ef8ca1ba8e80ca78e872a813 Sample:SmokeLoader
md5 b3c71fca1351df0d352fe022db1a38dc Sample:SmokeLoader

C2服务器 (该家族共有 5 台已记录服务器)

地址 类型 端口 协议 状态 国家
80.66.75.36 ip 80 HTTP inactive RU
148.72.171.175 ip 80 HTTP inactive US
91.243.44.247 ip 8888 HTTP inactive RU
185.173.35.16 ip 8080 HTTP inactive RU
torcavpcs1.atitech.com domain 443 TCP inactive —

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
smokeloaderloadermalwarehighsha256hash-analizi