alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Drivermax Utility Checkin Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/json"; startswith; http.user_agent; bsize:3; content:"ISS"; fast_pattern; http.host; bsize:9; content:"ipinfo.io"; reference:md5,68bdb48ec204d015a85f9655aa1d34d2; classtype:misc-activity; sid:2049630; rev:2; metadata:attack_target Client_Endpoint, created_at 2023_12_11, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_27; target:src_ip;)