what hash type is this?

[gayl0rd]

what hash is this ?
$6$rounds=5000$0c0b53df0792921d$CBVO7MqDekN85RR/x442glZnIcfczf9CQYYByaP/F8Wr88boyYQKlEHjsgnUJp0TBPSxwfdDEOD8Bw9ghpyy7/
i cant identify it online and how hard is it to bruteforce compared to a md5 hash?

 

[Uroborus]

SHA-512 Crypt