alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Generic Downloader - HTTP POST"; flow:established,to_server; http.method; content:"POST"; nocase; http.uri; content:"mac="; fast_pattern; nocase; content:"key="; content:"ver="; http.content_len; byte_test:0,=,0,0,string,dec; classtype:trojan-activity; sid:2009549; rev:8; metadata:created_at 2010_07_30, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_17;)