Unidentified apps downloading on my phone

[AC Question]

There are some new apps getting downloaded on my phone and it irritates me a lot. I'm using Samsung galaxy grand gti9082 and my phone is rooted to. I try to desable these apps but they appear again after some time even the play store is not working it's showing some kind of [RH-01] error. What to do?even Google plus and gmail is not working..

 

[belodion]

How about unrooting and reflashing the stock ROM?