Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Multibrowser Resource Exhaustion observed in Tech Support Scam"; flow:from_server,established; file_data; content:"var|20|total|20|=|20 22 22 3b|"; nocase; content:"total|20|=|20|total"; nocase; distance:0; content:"history.pushState"; nocase; fast_pattern; distance:0; pcre:"/^\s*\(\s*0\s*,\s*0\s*,\s*total\s*\)/Ri"; reference:url,bugzilla.mozilla.org/show_bug.cgi?id=1246773; classtype:social-engineering; sid:2024305; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2017_05_16, deployment Perimeter, confidence Medium, signature_severity Major, updated_at 2019_08_16;)