Busting crook when smuggling $1000. Foul creature! (5,3)

I believe the answer is:

stink bug

I'm a little stuck... Click here to teach me more about this clue!

'busting crook when smuggling $1000 foul' is the definition.
I can't tell whether this definition defines the answer.

'creature' is the wordplay.
I cannot really see how this works, but
'creature' could be 'bug' (bug is a kind of creature) and 'bug' is present in the answer.
The remaining letters 'stink' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.