alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE W32/Pandex Trojan Dropper Initial Checkin"; flow:established,to_server; http.uri; content:"?r="; content:"&hdd="; fast_pattern; content:"&gen="; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; classtype:command-and-control; sid:2013397; rev:4; metadata:created_at 2011_08_10, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_19;)