alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Chrome Tech Support Scam Landing Jan 26 2016"; flow:established,to_client; http.stat_code; content:"200"; http.content_type; content:"text/html"; startswith; file.data; content:"function pop"; fast_pattern; nocase; content:"function progressUpdate"; nocase; content:"Operating System"; nocase; content:"Browser"; nocase; content:"Internet Provider"; nocase; content:"Location"; nocase; content:"Scan progress"; nocase; classtype:social-engineering; sid:2022410; rev:4; metadata:created_at 2016_01_27, confidence Medium, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_02;)