SmokeLoader 恶意软件分析
文件属性
SHA256: 65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c
MD5: 04290323e3dae758ad39580ec1e4e402
文件类型: exe
大小: 165,888 byte
首次发现: 2021-03-16
AV 特征: Smoke Loader
Imphash: 0db5122541c535013699ed54854d9680
报告者: nao_sec
标签: Dofoil, RigEK, Smoke Loader, SmokeLoader
静态分析：基于元数据（未下载样本）
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)
# FILEPATH
65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c
| 类型 | 值 | 备注 |
|---|---|---|
| filepath | 65af1ef671dafde80bef708f3001a4d94eeb54fb9193d409002d4bae52fbd99c | PDB |
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。