alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ThreatFox payload delivery (url - confidence level: 100%)"; flow:established,from_client; http.method; content:"GET"; http.uri; content:"/n/thumbs.db"; depth:12; nocase; http.host; content:"81.90.29.35"; depth:11; isdataat:!1,relative; reference:url, threatfox.abuse.ch/ioc/1761802/; target:src_ip; metadata:confidence_level 100, first_seen 2026_03_08; classtype:trojan-activity; sid:91761802; rev:1;)