What we see here is the wonderful Cistus plant. A study by the University of Regensburg showed that Cistus extract has very potent antiviral properties in vitro. The study concludes that, given the threat of global epidemics, much more research should be conducted in this area.
Here's the link to the study:
"Potent in vitro antiviral activity of Cistus incanus extract against HIV and Filoviruses targets viral envelope proteins"
https://www.nature.com/articles/srep20394
You can find more studies on Cistus—categorized and with over 20 individual sources—in Cistus: What scientific studies are available?, and the comprehensive overview with clinical studies in our Cistus overview.