correct command?

[Snoopy]

-a 3 means bruteforce, so your first command where you tried using rockyou.txt was not right adn therefore i dont know what hashcat did there

so just for a fast first run, copy the follwoing lines into a file called basicmasks.txt

Code:

# all [1-6]
?a
?a?a
?a?a?a
?a?a?a?a
?a?a?a?a?a
?a?a?a?a?a?a

# basic v2 [7-8]
?l?d,?l?u?d,?a?2?1?1?1?1?a
?l?d,?l?u?d,?a?2?1?1?1?1?1?a

then run hashcat with

Code:

hashcat -a 3 -m 1000 -O -w 3 NTLM.txt basicmasks.txt

this will do a short run with all chars 1-6 positions and then switch the mask for position 7-8, see https://hashcat.net/wiki/doku.php?id=hashcat and https://hashcat.net/wiki/doku.php?id=mask_attack for more infos about masks and options

after this run you can supply another maskfile with other masks or try your dictionary attack but dictionary would be -a 0 so

Code:

hashcat -a 0 -m 1000 -O -w 3 NTLM.txt rockyou.txt

also if you install intel opencl runtime you can also utilize your CPU for cracking, after installing this driver

Code:

hashcat -I

should also show up your CPU, adding Option -D 1,2 will tell hahscat to use CPU+GPU (GPU only default)