>>16433
>What IP address(es) did they use?
A Tor exit node IP, before switching to the onion address and posting.
I haven't seen the IBs targeted by those soybois, but I was on one targeted about five years ago by /pol/ raids where one bought VPSs to spam CP. And like you said, the format is clearly different - aiming to offend and often gloating or being edgy, posting many times. The commercial scam spammers hit-and-run and have a clear advertising angle, like sharing links or putting them in the picture, and often not even using CSAM in the picture (I think these ones, while still abusive, were clothed model shots rather than graphic content, and I've seen ads use anime loli and images of pedobear).
As for the Omsk malware claim, I'd be interested if you can share evidence for this. It's plausible, although the most prolific spammers I've seen are using the Vladivostok timezone rather than Omsk.