We are favored here in the north west with weather that gives our rigging a long life. That said, it is also easy to ignore rigging.
The image (as
@dlochner identifies) is inconclusive. You are looking at one element, the bottom of a shroud. There is a little color. Since water runs down hill (mostly), the color (stain) you see comes from above the spot you show in the image.
An inspection would encompass all of the rig. Not only the wires but the way the wires are connected to the mast and the deck. It is the sum of the fixtures and wires that give your rig the strength to sustain the stresses of sailing and surviving the winds of the Northwest.
If you can reach him, Robert Doyle is in Everett most days. I believe he is a master rigger. I have trusted my rig and life to his professional skills.
There are others. The Brian Toss shop in Port Townsend has some fine graduates of Brian's training. They are operating out of the shop which looks out onto the Port Hudson marina. A call to them could set up an inspection.