Persistant and undelete-able cookie

Hi There…I have a cookie that keeps re-appearing no matter if I block it or delete it in Brave. The name of the cookie is static.trackivation.com It does not show up in Firefox or any searches of my files, nor is it recognized by my AV Sophos Home for Mac. It is persistent and reloads itself after I delete it using Brave. It spawns new processes and mutants, and places a new copy of itself every time there is a call to connect. I have given the team at Brave, the only address and site where I have found any information about this malware but I am unable to furnish any sample’s as the file itself seems to be nonexistent by that name. Your team seems reluctant or unwilling to get any information there. Please read the link that I furnished to find out what this malware is capable of and how it behaves? Sophos has been advised and is on the case. Please help me Obi Wan. Thankx . Randy