alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Krunchy/BZub HTTP POST Update"; flow:established,to_server; http.method; content:"POST"; nocase; http.request_body; content:"action="; fast_pattern; startswith; content:"|25 35 46|script"; http.header_names; content:!"|0d 0a|User-Agent|0d 0a|"; classtype:trojan-activity; sid:2007776; rev:10; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_02_19;)