SmokeLoader Malware Analizi

Dosya Ozellikleri

SHA256: 65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c

MD5: 04290323e3dae758ad39580ec1e4e402

Dosya Tipi: exe

Boyut: 165,888 byte

Ilk Gorulme: 2021-03-16

AV Imzasi: Smoke Loader

Imphash: 0db5122541c535013699ed54854d9680

Raporlayan: nao_sec

Etiketler: Dofoil, RigEK, Smoke Loader, SmokeLoader

Statik analiz: metadata tabanli (ornek indirilmedi)

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 (1 indicators)

IOC — SmokeLoader
# FILEPATH 65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c
TypeValueNote
filepath 65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c PDB
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
DofoilRigEKSmoke LoaderSmokeLoader