How to Bruteforce a part-known string?

[epixoip]

your mask is correct (great job on that by the way, most people who are new to hashcat do not pick up on masks so quickly), you just need to add --pw-min 8

Code:

hashcat-cli32 -a 3 -o found.txt hash.txt "?l?l?l?l2013" --pw-min 8