文件 Kimliği
| SHA256 | f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0 |
|---|---|
| 文件名 | autoruns.exe (SAHTE Sysinternals Autoruns!) |
| 大小 | 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 — 恶意软件档案
SmokeLoader. autoruns.exe Sysinternals version info spoofing. Spaso developer PDB username. stub.pdb loader project artifact.
技术细节
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.
归因 / 威胁行为者
Unknown (sold on underground forums, multiple operators)
能力与行为
IOC列表 (1 个指标)
# SHA256
f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0
| 类型 | 值 | 备注 |
|---|---|---|
| sha256 | f2b41e3f4d713157520136b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f0 |
C2服务器 (该家族共有 5 台已记录服务器)
| 地址 | 类型 | 端口 | 协议 | 状态 | 国家 |
|---|---|---|---|---|---|
| 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 地址仅来自 KEYDAL 团队人工验证的恶意软件样本。禁止用于商业用途。