The movies have not followed the canon of the games, much less the books. In the games and books, after the disaster of Raccoon city, Umbrella corp went bankrupt after demands of governments and civil organizations. The United Nations created a department to fight bio-terrorism and biological weapons (I don't remember the name), and in the present plot of the series it's a fight against bio-terrorism.
However the original goal of the umbrella was create super humans(Wesker is result in the game, i suppose in the movie is Alice), then I deduce the goal of Umbrella in the movies its the same, but IMHO looks like in that universe the goverments are stupid or corrupt .
wathever, the movies dont have much sense how the hell the virus evaporated all the water of the planet?