Is money earned from installing pirated copies and programs permissible or forbidden?

Your brother is not permitted to download pirated software for a fee, because that is an infringement upon the rights of its owners. It is also not permissible to copy software that its owners prohibit from being copied, except with their permission, for the Prophet, peace and blessings be upon him, said: “Muslims are bound by their conditions,” and “The wealth of a Muslim person is not lawful unless given with his willing consent,” and “Whoever precedes [others] to a permissible thing has a greater right to it.” This ruling applies to the owner of the software, whether Muslim or non-belligerent.