Probably the same Fallen Angel that tries to fool Catholic’s by pretending to be our Blessed Mother in some of the apparitions.?
I do not know much about Islam, but had never thought of it as begun by a demon. Do know they have a strong prayer life, and when they fast they truly fast.
Yes, maybe the same one who knows?

There are thousands of Fallen Angels seeking man’s ruination, which is why we rely on the Church to approve apparitions.
There are some who claim the CC started Islam.

Islam began 500years after Our Lord was crucified and resurrected when Mohammed starting receiving visits from an Angel.
The Angel made revelations which were used in creating this new religion. Mohammed taught that only Mary and Jesus were not touched by the Devil upon their birth. He followed Jesus and yet taught in contradiction to Jesus as to the nature of the Father. Muhammad wrote: “And it is not appropriate for the Most Merciful that He should take a son.” (Maryam 19:92)
The Koran makes God out to be an imperfect creature, that God cannot be good, only great. Good and great are seldom the same thing. The Koran also continues to make allegations that have no historical backing at all such as Abraham going to Saudi Arabia to nearly sacrifice his son Ishmael, instead of Israel.
Islam does not teach that Jesus is God. It believes the Trinity to be false.
These contradictions tell me something about the Angel that visited Mohammed.
The Koran contains some beautiful texts as do Hindu and Buddhist texts. There is some beauty contained in most religions.
There is only one Truth. For me it’s Catholicism, for a Muslim its Islam, for a Buddhist its Buddhism etc etc
It doesn’t mean individual practitioners of any of the faiths I mentioned are not decent, peace loving people who are actually living their lives according to the Gospel. Or that they will not go to Heaven, that is for God to decide.