I’m guessing ivy?
This image is not safe for people suffering from trypophobia
Almost looks like water damage but that is either a lot of water pressure or a long amount of exposure…
Brick worms… You see, #THIS# is why we can’t have nice things!
Are those bullet holes?
No idea what they are but I imagine bullets would do a lot more damage to brick than that. And there a strange pattern that doesn’t make sense for bullets.