SmokeLoader | Tehdit Seviyesi: high | Tür: Loader

Kriptografik Tanımlayıcılar

SHA256f2de51aaf0446fa0aead1cbc6e2ffdbdc49da2638a99ab16f304277d34e1f6c7
MD5b2cebdeae4012362652ab8b00cd39753
Dosya Türüexe
Boyut3792.3 KB
İlk Görülme2025-12-07
Dosya Adıdrrutjw.exe
Etiketlerexe, Smoke Loader, SmokeLoader

Malware Ailesi: SmokeLoader

SmokeLoader, modüler loader/botnet'tir.

TürLoader
Programlama DiliC
Hedef PlatformWindows
C2 ProtokolüHTTP
AmaçEk yük indiren botnet
İlk Görülen Yıl2011
Diğer İsimlerDofoil

Tehdit Göstergeleri (IOC)

  • SHA256: f2de51aaf0446fa0aead1cbc6e2ffdbdc49da2638a99ab16f304277d34e1f6c7
  • MD5: b2cebdeae4012362652ab8b00cd39753

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: f2de51aaf0446fa0"
        threat_level = "high"
        first_seen = "2025-12-07"
    condition:
        hash.sha256(0, filesize) == "f2de51aaf0446fa0aead1cbc6e2ffdbdc49da2638a99ab16f304277d34e1f6c7"
}

SmokeLoader — Malware Profile

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

Malware Type
Loader
Programming Language
C
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 f2de51aaf0446fa0aead1cbc6e2ffdbdc49da2638a99ab16f304277d34e1f6c7 # MD5 b2cebdeae4012362652ab8b00cd39753
TypeValueNote
sha256 f2de51aaf0446fa0aead1cbc6e2ffdbdc49da2638a99ab16f304277d34e1f6c7 Sample:SmokeLoader
md5 b2cebdeae4012362652ab8b00cd39753 Sample:SmokeLoader
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.

Tags
smokeloaderloadermalwarehighsha256hash-analizi