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One site suggests this is malware, doing a net search.
Run a complete malware/spyware scan with Malwarebytes and also a complete antivirus scan.
Malwarebytes | Free Cyber Security & Anti-Malware Software
Thanks - I'd already done that - clean as as whistle. Anyway, I've just found the answer in the firewall itself: Electron is the passageway for Deezloader to access the internet.