alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox payload delivery (url - confidence level: 90%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/9cca20c6df659f72/m_cpt1903.bin"; depth:31; nocase; http.host; content:"178.16.52.201"; depth:13; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1772695/; target:src_ip; metadata:confidence_level 90, first_seen 2026_03_21; classtype:trojan-activity; sid:91772695; rev:1;)