alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Malicious Chrome Extension"; flow:established,to_server; http.uri; content:"page?url="; fast_pattern; content:"/user/"; content:"iframe="; http.header_names; content:!"Referer|0d 0a|"; classtype:pup-activity; sid:2023015; rev:4; metadata:affected_product Web_Browser_Plugins, affected_product Google_Chrome, attack_target Client_Endpoint, created_at 2016_08_05, deployment Perimeter, performance_impact Low, signature_severity Minor, updated_at 2020_08_31;)