Sha1(user:pass) decryption

[Xelarzo]

Hello guys.
I recently found out hashcat and I read alot about it, but I can't figure out how to make it decrypt SHA1(USERNAMEASSWORD) hashes.

I have list which looks like this:

USERNAME | HASH
Randomname | 117106**************************

The hashes are encrypted this way:

$hash = sha1(strtoupper($user).':'.strtoupper($pass));

Which mean for example if we got username: Test and password asdtest2 the hash will look like this: SHA1(TEST:ASDTEST2).
I guess I need to check only Uppercase A-Z, 0-9 and the special symbols like @!$%^, but I don't know how to make this settings.