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54F3DE4E-B7BA-4EBD-8B3B-385D272CC583


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That lengthy folder number is a UUID which will be different on every Mac since it's designed to be "Universally Unique" and won't mean anything to Malwarebytes (and should not to any other anti-malware app). I know that to some Mac scanners, just having a suffix of .dat is sufficient to call out such files since they are usually Windows files that might contain Windows malware. If that other app leads you to believe that it did find Mac malware, then you need to upload those files to the Newest Mac Threats forum so they can be examined.

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There can be both legitimate and malicious uses of such folder names. In that particular location, it's unusual, though. I'd be interested to see the full contents of that folder, if you can compress it (control-click it and choose the "Compress 54F3DE4E..." option), then attach the resulting 54F3DE4E[...].zip file to a message here.

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Ahh, I see you've already uploaded to Newest Mac Threats. As Al mentioned there, those files are all quite small. They appear to be some kind of encoded data. They are not directly executable, but may have been support files for some kind of adware. (We most commonly see these kinds of file names among adware on macOS.) It's also entirely possible they're data files for some legitimate software.

I can't say why some other AV software detected this folder.

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