alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT_KIT Terror EK Payload URI T1 Jun 02 2017 M2"; flow:established,to_client; http.response_header; header_lowercase; content:"content-description|3a 20|File|20|Transfer"; http.response_header; header_lowercase; content:"expires|3a 20|0"; startswith; http.response_header; header_lowercase; content:"content-disposition|3a 20|"; startswith; content:".exe-rc4.exe"; endswith; http.cookie; content:"ci_session"; file.data; content:!"MZ"; within:2; classtype:exploit-kit; sid:2024345; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_06_02, deployment Perimeter, malware_family Exploit_Kit_Terror, confidence High, signature_severity Major, tag Exploit_Kit_Terror, updated_at 2024_04_28;)