For Scorpio Lagana Jupiter rules the 2nd and 5th house while Moon rules the 9th house that is the bhagystan. Jupiter and Moon in the 8th house will not be good as the person will not save money despite earning well. Loss of name , fame and family happiness as 2nd house gives recognition. Chances of separation or no support from family is also there. Moon is the bhagesh for Scorpio lagana and it going in the 8th house means loss of luck / destiny not supporting the native. 12th lord Jupiter in 8th means, troubles from children, education and also on the love front.
Astrologically 8th house is called the paataal, and therefore whenever any benefic planets will go to the 8th house it will get weak and loses out on its benefic aspects. Of course never predictions should be made based upon one aspect alone in astrology, you should look at the complete chart. There will always be aspects / conjunctions of other planets that also play a very important role in prediction. However only taking your question of 2nd / 5th and 9th house in 8th house will generally give malefic effects.