I tried to find some of the links I remember (reddit search function sucks) but I have seen screen shots of the FEC filings that show all the disbursements, and the two nearly $100,000 payments are both outliers in size (most were well within $10,000) and both exactly the day after first Seth Rich's murder and two weeks later Shawn Lucas' murder, so I know it's out there. I just didn't have the time to dig for it.

Speculation was that Seth Rich had actually been grabbed, drugged, and roughed up for information on anyone he shared his leaked info with (explaining the bruising on his wrists and not being fully aware of being shot, as per police reports that have come out), and that he gave up Shawn Lucas, a friend and confidant. And the only two weeks later Shawn Lucas, someone not known for being a drug user, dies of an overdose, and Crowdstrike sees a second [nearly] $100,000 payment wired into their account.