The WireShare installers are not packaged with any 3rd party junkware or anything else.

Just a note about which source you choose to download from: a few of the file-hosting sites have 3rd party advertisers that are misleading. 4Shared is the worst of these with a download button that is not the genuine file & leads to a malware file. The proper download button is below that button. At present there is only one remaining 4Shared option for Windows. The other 4Shared downloads were removed before this last WS update. Despite a discussion with 4Shared support 8 to 9 months ago about this issue, they have declined to disallow such deceptive 'low-life' advertisements or even reformat their positioning on the download page.

If in doubt, download from SourceForge.
If you are subscribed to the WS SourceForge updates then you will be 100% fine.