hashcat is the world’s fastest and most advanced password recovery utility, supporting five unique modes of attack for over 300 highly-optimized hashing algorithms. bruteforce 4 chars (d = 0-9 l = a-z u = A-Z)
Command Reference:
-m: hashcat mode 5600 (NetNTLMv2)
–force: ignore warnings
Command:
hashcat -m 5600 hashes.txt -a 3 -1 ?d?l?u ?1?1?1?1