ファイル Kimliği
| SHA256 | f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0 |
|---|---|
| ファイル名 | autoruns.exe (SAHTE Sysinternals Autoruns!) |
| サイズ | 520.136 byte (508KB) |
| String Sayisi | 1.142 |
autoruns.exe: Sysinternals Autoruns Taklidi
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
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
| SHA256 | f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0 |
|---|---|
| Taklit | autoruns.exe (Sysinternals) |
| PDB | C:\Users\Spaso\source\repos\stub\Release\stub.pdb |
SmokeLoader — マルウェアプロファイル
SmokeLoader. autoruns.exe Sysinternals version info spoofing. Spaso developer PDB username. stub.pdb loader project artifact.
技術詳細
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.
アトリビューション / 脅威アクター
Unknown (sold on underground forums, multiple operators)
機能と挙動
IOCリスト (1 件の指標)
# SHA256
f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
| タイプ | 値 | メモ |
|---|---|---|
| sha256 | f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0 |
C2サーバー (このファミリーで5台のサーバーを記録)
| アドレス | タイプ | ポート | プロトコル | ステータス | 国 |
|---|---|---|---|---|---|
| 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アドレスはKEYDALチームが手動で検証したマルウェア検体のみに基づいて提供されています。商用利用は禁止です。