Excel Protected Workbook Known PW Length

[slyexe]

For shits and giggles I changed the device to -d 3 (Intel GPU)

Code:

hashcat.exe -d 3 -m9600 -a 3 --username -1 ?l?u hash.txt ?1?1?1?1

It's working, but at 88 H/s which is a far cry lower than the JtR performance on CPU.

You're not using your CPU, you're using the integrated graphics within your CPU. Install the appropriate drivers to use your CPU. Requirements are posted right on homepage. 

https://hashcat.net/hashcat/