Is there such a thing as a "bench technical"?

[Scrapper1]

This was asked at a meeting tonight. Suppose between the 1st and 2nd quarters, you hear a derogatory comment directed at you from Team A's bench. You don't know who said it, but for the sake of argument, you're sure that it came from the Team A bench.

Since you don't know who said it, can you issue a technical foul to "the bench", without giving it to a particular person? Just have it be a team foul. If you can do that, would it get charged indirectly to the head coach (since it's a team foul)?