I deleted the two "suspect" files with the following result:
1. Upon relaunching MacUpdate Desktop, I had to (re)install my SN & PW. Also, I had to reset a few options/selections. AFAIK, all is (again) normal in that regard.
FWIW, MacUpdate "claims" the nefarious wrapper is not in play for registered MU Desktop users (though I'm not convinced, so I go directly to the developer's site).
Since MU checks for outdated apps upon launch, maybe that's related...
2. As yet, I see no consequence from deleting the ".dat.nosync022a.rOuyuR (hidden)" file. Perhaps I just haven't done anything to prompt it.
As a side note, EtreCheck did not highlight that file on my other machine that has identical applications. Perhaps I installed something on one machine and then deleted it prior to installing it on the other. Curious and curiouser...
