The realistic thing to do is to somehow ask them which file in our archive is flagged so we can fix or remove it.
All batch files, I guess. Boost could use another extension (.bbat), as the approach to "dangerous" is rather simplistic. I still really doubt defender actually attempt to decompress an archive that spans 1.5GB disk space, though. And, as it doesn't seem to flag the .zip file [no reports from this], can it even open .7z files [license issues maybe] at all? I have turned defender off completely [easy] and run MalwareBytes on a regular basis instead [and image my system disk for backup]. Defender is useless [as in: doesn't find real threats, or even minor ones], comes up with many false positives and consumes [continuously] huge resources. degski -- *“If something cannot go on forever, it will stop" - Herbert Stein*