alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT ElTest Exploit Kit Redirection Script"; flow:established,to_client; file_data; content:"<script"; nocase; content:"text/javascript"; within:50; nocase; content:"|22|iframe|22|"; within:100; nocase; content:".style.border= |22|0px|22|"; within:200; fast_pattern; nocase; content:"frameborder"; within:100; nocase; content:".setAttribute("; within:50; nocase; content:"document.body.appendChild("; within:100; nocase; content:"= |22|http"; within:100; nocase; content:".src="; distance:0; nocase; content:"<|2F|script>"; within:50; nocase; reference:url,researchcenter.paloaltonetworks.com/2017/01/unit42-campaign-evolution-eitest-october-december-2016/; classtype:exploit-kit; sid:2024237; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_04_24, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2019_07_26;)