alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox payload delivery (url - confidence level: 75%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/scl/fi/6sd0a0od839wwehcndldi/merluis-setup-2.0.0.exe"; depth:53; nocase; http.host; content:"www.dropbox.com"; depth:15; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1785152/; target:src_ip; metadata:confidence_level 75, first_seen 2026_04_13; classtype:trojan-activity; sid:91785152; rev:1;)