alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Microsoft Tech Support Scam Landing M1 Oct 13 2017"; flow:established,to_client; file_data; content:"<title>Windows Defender</title>"; nocase; fast_pattern; content:"background-color|3a 20|#659e1d"; nocase; distance:0; classtype:social-engineering; sid:2024841; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_10_13, deployment Perimeter, confidence Medium, signature_severity Minor, tag Tech_Support_Scam, updated_at 2019_08_16;)