This doesn’t say that it was a demon that altered the dreams, but it does show that the prophecies in dreams can certainly be false.
*Jeremiah 23:25 I have heard what the prophets have said who prophesy lies in my name, saying, I have dreamed, I have dreamed!’ 23:26 How long shall there be lies in the heart of the prophets who prophesy lies, and who prophesy the deceit of their own heart, 23:27 who think to make my people forget my name by their dreams which they tell one another, even as their fathers forgot my name for Ba’al?
Zechariah 10:2 …the dreamers tell false dreams,…
*
Did a search on “dream”, but nothing came up specifically connecting satan with false dreams. However, there were some clear warnings against putting much credit in them:
*Sirach 34:5 Divinations and omens and dreams are folly, and like a woman in travail the mind has fancies. 34:6 Unless they are sent from the Most High as a visitation, do not give your mind to them. 34:7 For dreams have deceived many, and those who put their hope in them have failed. *
(Sirach is one of the books not in the Protestant OT. In the Douay it is called Ecclesiasticus.)
Nita