alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Delf/Troxen/Zema Reporting 2"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:".php?s="; content:"&m="; pcre:"/\.php\?s=\d&m=[A-F0-9]{16}$/i"; http.user_agent; content:"build"; fast_pattern; startswith; reference:md5,3d18363a20882bd74ae7e0f68d3ed8ef; classtype:trojan-activity; sid:2014115; rev:4; metadata:created_at 2012_01_12, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_16;)