Help With Oil Leak

Hey Guys,
I need some help locating what appears to be an oil leak. I noticed a couple drops of oil below my truck in the garage so I crawled underneath to investigate. What I saw is a complete mess. Please see pictures. There was oil residue basically everywhere between the front differential control module and the cross member. Can someone help me figure out where this is coming from. From what I can tell I don't think it is the drain plug because there is oil above it. Could it be the oil pan mounts? Thank You
P.S the truck only has 88 thousand miles so I don't imagine it being anything serious (fingers crossed)

 

sorry for the crappy pictures, more to come!

 

mabey the around the pan from what can see. wash it off, then should be easier to tell where exactly coming from