MD5 Help

[Flomac]

hashcat -m 10 -w 4 -a 3 -1 ?l?u?d --force --increment-min 3 --increment-max 12 [your_hash:your_salt] ?1?1?1?1?1?1?1?1?1?1?1?1

But it will take a few hundred years, depending on your hardware. If the password is not completely random, a dictionary attack might make more sense.