Manuel Statik Analiz — SmokeLoader | Tehdit: YUKSEK

Файл Kimliği

SHA256f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
Имя файлаautoruns.exe (SAHTE Sysinternals Autoruns!)
Размер520.136 byte (508KB)
String Sayisi1.142

autoruns.exe: Sysinternals Autoruns Taklidi

SAHTE ARAÇ: PrivateLoader "sysmon.exe" ile aynı taktik!
autoruns.exe
-- Autoruns = Microsoft Sysinternals (Mark Russinovich) aracı
-- Startup kayıtlarını analiz eden popüler güvenlik aracı
-- SmokeLoader: "autoruns.exe" adıyla → güvenlik analistleri güvenir!
-- Dağıtım: "autoruns yeni sürümü" spam e-posta veya forum paylaşımı
-- PrivateLoader: "sysmon.exe" (batch 79), SmokeLoader: "autoruns.exe"
-- Ortak taktik: Sysinternals araçlarına sahte isim

C:\Users\Spaso\source\repos\stub\Release\stub.pdb: Geliştirici PDB

GELİŞTİRİCİ KİMLİĞİ: "Spaso" username + stub loader PDB!
C:\Users\Spaso\source\repos\stub\Release\stub.pdb
-- "Spaso" = Slav kökenli isim (Sırpça/Bulgarca/Boşnakça)
  - "Spas" = kurtuluş/kurtarıcı (dini anlam)
  - Doğu Avrupa geliştirici: Sırp, Bulgar veya Boşnak olası
-- "source\repos" = Visual Studio'nun GitHub repos dizini (VS 2017+)
-- "stub" = loader stub (dropper çekirdek kodu)
-- "stub.pdb" = PDB adı: "bu bir stub/loader" diyerek niyeti açıklıyor
-- Visual Studio Release derlemesi: production build yapılmış

IOC

SHA256f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
Taklitautoruns.exe (Sysinternals)
PDBC:\Users\Spaso\source\repos\stub\Release\stub.pdb

SmokeLoader — Профиль вредоносного ПО

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

Тип вредоносного ПО
Loader
Язык программирования
C
C2 Протокол
HTTP
Целевые системы
Windows
Другие названия (AKA)
Dofoil

Технические детали

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.

Атрибуция / Актор угрозы

Unknown (sold on underground forums, multiple operators)

Возможности и поведение

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

Список IOC (1 индикаторов)

IOC — SmokeLoader
# SHA256 f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
ТипЗначениеПримечание
sha256 f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
SmokeLoader — Полный профиль →

C2 Серверы (5 зарегистрированных серверов для этого семейства)

Адрес Тип Порт Протокол Статус Страна
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 —

Адреса C2 предоставляются только на основе образцов вредоносного ПО, вручную проверенных командой KEYDAL. Коммерческое использование запрещено.

Теги
smokeloadersmoke-loaderautoruns-exe-fake-sysinternalsspaso-developer-pdbstub-pdb-loader-nametqq-obfuscated-c2eastern-european-developervisual-studio-repos