SmokeLoader Malware Analysis

File Properties

SHA256: fcc22a367ed0a8d8de94f5159ab12c32606f97326b832eb47327b7707ba457a6

MD5: 193692e1cf957eef7e6cf2f6bc74be86

File Type: exe

Size: 4,008,384 byte

First Seen: 2024-04-18

AV Signature: PrivateLoader

Imphash: 023aae353653db016d3a89da454d1d86

Reported By: SecuriteInfoCom

Tags: exe, Glupteba, LummaStealer, OperaLoader, PrivateLoader, PureLogStealer, RedLineStealer, RiseProStealer, signed, SmokeLoader

Static analysis: metadata-based (sample not downloaded)

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 fcc22a367ed0a8d8de94f5159ab12c32606f97326b832eb47327b7707ba457a6
TypeValueNote
filepath fcc22a367ed0a8d8de94f5159ab12c32606f97326b832eb47327b7707ba457a6 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
exeGluptebaLummaStealerOperaLoaderPrivateLoader