triple des is a cipher which encrypts blocks (8 bytes = 64 bits, our hashcat salt = plaintext and hash = ciphertext in hex) and a key lengh of 24 bytes (3 times 8 bytes).. see https://en.wikipedia.org/wiki/Triple_DES (Keying option 1, all 3 keys are independent)
if you have an alternative where some of those keys are related, you need to somehow feed hashcat with the correct 24 bytes (pipe, dict attack etc)
if you have an alternative where some of those keys are related, you need to somehow feed hashcat with the correct 24 bytes (pipe, dict attack etc)