alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Common Downloader Install Report URL"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"a="; nocase; content:"&k="; nocase; content:"&wmid="; nocase; content:"&ucid="; nocase; classtype:trojan-activity; sid:2008182; rev:9; metadata:created_at 2010_07_30, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_04_21;)