alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Common Downloader Install Report URL (pid - mac)"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"html?"; nocase; content:"set="; nocase; content:"&pid="; nocase; content:"&mac="; nocase; fast_pattern; classtype:trojan-activity; sid:2008183; rev:8; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)