2 Again there was a day when the sons of God came to present themselves before the Lord, and Satan came also among them to present himself before the Lord.
2 And the Lord said unto Satan, From whence comest thou? And Satan answered the Lord, and said, From going to and fro in the earth, and from walking up and down in it.
3 And the Lord said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? and still he holdeth fast his integrity, although thou movedst me against him, to destroy him without cause.
4 And Satan answered the Lord, and said, Skin for skin, yea, all that a man hath will he give for his life.
5 But put forth thine hand now, and touch his bone and his flesh, and he will curse thee to thy face.
6 And the Lord said unto Satan, Behold, he is in thine hand; but save his life.
7 So went Satan forth from the presence of the Lord, and smote Job with sore boils from the sole of his foot unto his crown.
There are a few areas in the Bible where we have valuable information about Satan, I am not sure if he has a body or not or is spirit that "possesses" individuals, but it is clear that he was walking up and down in the earth.