alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP DownLoadAdmin Activity"; flow:established,to_server; http.uri; content:"/install.php?bc="; startswith; fast_pattern; content:"&d="; content:"&cb="; http.header_names; content:"|0d 0a|user-agent|0d 0a|x-webinstallcode|0d 0a|"; reference:md5,cff290dcb07183541783bbc9ce7056b4; classtype:pup-activity; sid:2030663; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_08_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_07;)