SmokeLoader Analyse de malware
Propriétés du fichier
SHA256: c1830ba81a707357031fc8e5cd7cf3a6083c30f33669fe29590cc639140d6780
MD5: 22f0838b7f38ff8eac2e40208acb640c
Type de fichier: exe
Taille: 218,624 byte
Première observation: 2020-10-05
Signature AV: Smoke Loader
Imphash: f34d5f2d4577ed6d9ceec516c1f5a744
Signalé par: GovCERT_CH
Étiquettes: Smoke Loader, SmokeLoader
Analyse statique : basée sur les métadonnées (échantillon non téléchargé)
SmokeLoader — Profil du malware
SmokeLoader. autoruns.exe Sysinternals version info spoofing. Spaso developer PDB username. stub.pdb loader project artifact.
Détails techniques
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 / Acteur de la menace
Unknown (sold on underground forums, multiple operators)
Capacités et comportement
Liste IOC (1 indicateurs)
# FILEPATH
c1830ba81a707357031fc8e5cd7cf3a6083c30f33669fe29590cc639140d6780
| Type | Valeur | Note |
|---|---|---|
| filepath | c1830ba81a707357031fc8e5cd7cf3a6083c30f33669fe29590cc639140d6780 | PDB |
Serveurs C2 (5 serveurs enregistrés pour cette famille)
| Adresse | Type | Port | Protocole | Statut | Pays |
|---|---|---|---|---|---|
| 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 | — |
Les adresses C2 proviennent uniquement d'échantillons de malwares vérifiés manuellement par l'équipe KEYDAL. Toute utilisation commerciale est interdite.