Kriptografik Tanımlayıcılar
| SHA256 | 77a2c2761bd439548177a36b6a10d8979c0e41d2cf3c1c98329307cbe5251ab6 |
|---|---|
| MD5 | 4a2e5a268b422b207f87ffeeaf83fbf1 |
| Dosya Türü | exe |
| Boyut | 212.0 KB |
| İlk Görülme | 2026-03-03 |
| Dosya Adı | embedded_payload_decrypted.exe |
| Etiketler | exe, Smoke Loader, SmokeLoader |
Malware Ailesi: SmokeLoader
SmokeLoader, modüler loader/botnet'tir.
| Tür | Loader |
|---|---|
| Programlama Dili | C |
| Hedef Platform | Windows |
| C2 Protokolü | HTTP |
| Amaç | Ek yük indiren botnet |
| İlk Görülen Yıl | 2011 |
| Diğer İsimler | Dofoil |
Tehdit Göstergeleri (IOC)
- SHA256:
77a2c2761bd439548177a36b6a10d8979c0e41d2cf3c1c98329307cbe5251ab6 - MD5:
4a2e5a268b422b207f87ffeeaf83fbf1
Bu örneğin tüm hash değerlerini VirusTotal üzerinde doğrulayabilirsiniz.
Sistem Temizleme Rehberi
- Sistemi ağdan ayırın — Loader başka zararlı yazılım indiriyor olabilir
- İndirilen tüm payload'ları analiz edin
- Tüm ağ trafiğini inceleyin, şüpheli bağlantıları kesin
- Antivirüs ile tam tarama yapın
- Sistem yenileme düşünün
YARA Kuralı İpuçları
rule SmokeLoader_SHA256 {
meta:
description = "SmokeLoader sample: 77a2c2761bd43954"
threat_level = "high"
first_seen = "2026-03-03"
condition:
hash.sha256(0, filesize) == "77a2c2761bd439548177a36b6a10d8979c0e41d2cf3c1c98329307cbe5251ab6"
}SmokeLoader — Perfil do malware
SmokeLoader. autoruns.exe Sysinternals version info spoofing. Spaso developer PDB username. stub.pdb loader project artifact.
Detalhes técnicos
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.
Atribuição / Ator da ameaça
Unknown (sold on underground forums, multiple operators)
Capacidades e comportamento
Lista IOC (2 indicadores)
# SHA256
77a2c2761bd439548177a36b6a10d8979c0e41d2cf3c1c98329307cbe5251ab6
# MD5
4a2e5a268b422b207f87ffeeaf83fbf1
| Tipo | Valor | Nota |
|---|---|---|
| sha256 | 77a2c2761bd439548177a36b6a10d8979c0e41d2cf3c1c98329307cbe5251ab6 | Sample:SmokeLoader |
| md5 | 4a2e5a268b422b207f87ffeeaf83fbf1 | Sample:SmokeLoader |
Servidores C2 (5 servidores registrados para esta família)
| Endereço | Tipo | Porta | Protocolo | Status | País |
|---|---|---|---|---|---|
| 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 | — |
Os endereços C2 são fornecidos apenas a partir de amostras de malware verificadas manualmente pela equipe KEYDAL. O uso comercial é proibido.