3DES Help

[hash9999]

So I wrote a password program bask in the day using Visual Studios Simple3Des Class.  And I forgot the password that I used to encrypt...   This program class takes a "Salt" like parameter, and a "password" like parameter.  

So I have the hash of the password.  I have the salt, and I know the first 6 characters of the password. 

How can I use Hashcat to guess at the last 4-6 characters of the password I forgot.  ?  Thank You