alert http $HOME_NET any -> $EXTERNAL_NET any (
msg:"ET MALWARE Probable OneLouder downloader (Zeus P2P)";
flow:to_server,established;
urilen:2<>5;
flowbits:set,ET.Onelouder.bin;
flowbits:noalert;
http.method;
content:"GET";
http.uri;
pcre:"/^\/(?P<n>\d)(?P=n){1,2}$/";
http.user_agent;
content:"|20|MSIE|20|"; fast_pattern;
http.header_names;
content:!"Referer";
content:!"Accept-Language";
classtype:trojan-activity;
sid:2018981; rev:7;
metadata:created_at 2014_08_22, performance_impact Significant, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29;
)