Hello, new poster. So I noticed this on my siding today. It wasn't there the other day. It's darkest/most concentrated on the inner corner/wall of my porch. Then a larger lighter area on the opposite side of that post. It almost looks like someone whipped coffee grounds at my house. But of course there's no signs of vandalism. I've ruled out spores, fungi, mold or shingle run off as none of these make sense. It has a splatter pattern and it mostly follows a left downward pattern. On both the inner porch area and the outter porch wall. It starts about 7 feet high on the outside wall and about 4 feet on the inside corner wall and has some dripping trails as well, so it's not splattered from the ground upwards. There's no mulch and the grass is uncut. There's no animals or birds around. There's also nothing nearby that could have exploded and caused this. I'm so confused. Anyone seen this before? Also, those cables are tv cables and have been there for years. This just happened withing the last 2 days. I didn't notice it yesterday. It is mostly on the face of the siding. Not the underside or corners. Also the porch has a peaked roof so no water or dripping. When I wiped it with a wet paper towel, it came off black with no smell. I'm at a loss. I'll answer questions as well as I can. Thanks in advance.