SmokeLoader — 0euj4.exe [d49b3f0f]

SmokeLoader | Tehdit Seviyesi: high | Tür: Loader

Kriptografik Tanımlayıcılar

SHA256	`d49b3f0f364d77154cb09ef632b4698657108b55e8c6dcd88e5f38a6f83fcdb3`
MD5	`6c3b390ef42bbffa672088ed43d06d98`
Dosya Türü	exe
Boyut	235.0 KB
İlk Görülme	2021-03-20
Dosya Adı	0euj4.exe
Etiketler	RigEK, 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: d49b3f0f364d77154cb09ef632b4698657108b55e8c6dcd88e5f38a6f83fcdb3
MD5: 6c3b390ef42bbffa672088ed43d06d98

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: d49b3f0f364d7715"
        threat_level = "high"
        first_seen = "2021-03-20"
    condition:
        hash.sha256(0, filesize) == "d49b3f0f364d77154cb09ef632b4698657108b55e8c6dcd88e5f38a6f83fcdb3"
}

SmokeLoader — Malware Profile

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

Malware Type

Loader

Programming Language

C2 Protocol

HTTP

Target Systems

Windows

Also Known As (AKA)

Dofoil

Technical Details

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.

Attribution / Threat Actor

Unknown (sold on underground forums, multiple operators)

Capabilities & Behavior

Payload İndirme

Süreç Enjeksiyonu

Modüler Mimari

Kimlik Bilgisi Hırsızlığı

Yanal Hareket

Kalıcılık

Anti-VM/Sandbox

İkincil Payload Dağıtımı

IOC List (2 indicators)

IOC — SmokeLoader

# SHA256
d49b3f0f364d77154cb09ef632b4698657108b55e8c6dcd88e5f38a6f83fcdb3

# MD5
6c3b390ef42bbffa672088ed43d06d98

Type	Value	Note
sha256	d49b3f0f364d77154cb09ef632b4698657108b55e8c6dcd88e5f38a6f83fcdb3
md5	6c3b390ef42bbffa672088ed43d06d98

SmokeLoader — Go to Full Profile →

C2 Servers (5 recorded servers for this family)

Address	Type	Port	Protocol	Status	Country
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 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.