No, they are just using Indian money and some guidance software.
I think max that you are over reacting here. The Brahmos will never be used against the US and remain unintereptible...simply because India will end up sharing the design with the USA if it were to come to it. India moves ever closer to the US strategically but such a tectonic shift takes time - decades. Also it remains to be seen when the US will stop calling Pakistan “an ally”. If the US wants India to move firmly over to its side, it must firmly dispose of Pakistan as an ally. As long as you play both sides against the middle, we will have no other choice but to do the same.