alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Malicious Adware Chrome Extension Detected (2)"; flow:established,to_server; http.uri; content:"/?keyword="; fast_pattern; content:"&id="; distance:0; content:"&sysid="; distance:0; http.header_names; content:"|0d 0a|User-Agent|0d 0a|"; content:"|0d 0a|Upgrade-Insecure-Requests|0d 0a|"; content:"|0d 0a|Accept"; content:"|0d 0a|Connection|0d 0a|"; reference:url,blog.0day.rocks/malicious-chrome-extension-meddling-with-your-searches-581aa56ddc9c; classtype:pup-activity; sid:2024727; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_09_19, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, updated_at 2024_03_12;)