Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Underminer EK Flash/WAV Loader"; flow:established,to_client; http.stat_code; content:"200"; http.header; content:"Cache-Control|3a 20|private|3b 20|no-store|3b 20|no-cache|0d 0a|"; content:"Content-Encoding|3a 20|gzip|0d 0a|"; content:"X-UA-Compatible|3a 20|IE=9|3b 20|IE=8|3b 20|IE=7"; file.data; content:"function getSalt(){"; nocase; content:"function getAudioResource(){"; nocase; distance:0; fast_pattern; content:"/"; distance:0; content:".wav|22 3b|"; nocase; distance:26; within:6; content:"<param name=|22|movie|22 20|value=|22|"; nocase; distance:0; content:"/"; distance:0; content:".swf|22|"; nocase; distance:26; within:5; content:"<embed src=|22|"; nocase; distance:0; content:"/"; distance:0; content:".swf|22 20|allowScriptAccess=|22|always|22 20|type=|22|application/x-shockwave-flash|22|"; nocase; distance:26; within:69; classtype:exploit-kit; sid:2026425; rev:3; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_09_28, deployment Perimeter, confidence High, signature_severity Major, tag Underminer_EK, updated_at 2020_08_25;)