and the chief priests and the teachers of the law were looking for some way to get rid of Jesus, for they were afraid of the people. Then Satan entered Judas, called Iscariot, one of the Twelve. 4 And Judas went to the chief priests and the officers of the temple guard and discussed with them how he might betray Jesus. 5 They were delighted and agreed to give him money. 6 He consented, and watched for an opportunity to hand Jesus over to them when no crowd was present.
Note the inconsistency with:
Luke 23:34
Jesus said, “Father, forgive them, for they do not know what they are doing.” And they divided up his clothes by casting lots.
Who is really guilty? Satan or the sinedrites and Judah?
The our Gospels want that some men are deliberately guilty of the execution of Jesus. An act of free will. Hence Satan can't play really a role, here, since the sinedrites don't need really him to kill Jesus. Even Tertullian recognizes this fact:
What is the evil, then, which you want to impute to the Creator? If it is man's sin, it will not be God's fault, because it is man's doing; nor is that Being to be regarded as the author of the sin, who turns out to be its forbidder, nay, its condemner. If death is the evil, death will not give the reproach of being its own author to Him who threatened it, but to him who despised it. For by his contempt he introduced it, which assuredly would not have appeared had man not despised it.
http://www.newadvent.org/fathers/03122.htm
Satan is not necessary, but he is found in any case behind Judas. There is the mark of an editorial fatigue, here.
In Mcn there is not a such contradiction, being there who takes all the guilty:
Then, the Creator, seeing that the good God was going to destroy the his Law, plotted against Christ, and not knowing that the death of the Good was the salvation of men.
He entered in Judah, called Iscariot, who went to the officers of the temple guard and discussed with them how he might betray Jesus
He entered in Judah, called Iscariot, who went to the officers of the temple guard and discussed with them how he might betray Jesus