Wow, FileZilla’s bundled installer includes a malware downloader and the dev defends it horribly.
If using FileZilla, uninstall and find something else. Even if this issue is fixed, the morally ambiguous and defensive response is very concerning.
"Trans Europa Express is a brand new extension for the #firefox web browser that pretends that Internet users are from the European Union to give them some of the privacy protections that websites give users from the EU."
https://www.ghacks.net/2018/05/29/pretend-you-are-from-the-eu-to-benefit-from-gdpr/