alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Angler EK Possible Flash/IE Payload"; flow:established,to_server; urilen:15; content:"/1"; depth:2; http_uri; pcre:"/^\/1[a-z0-9]{13}$/U"; content:!"Referer|3a|"; http_header; content:!"User-Agent|3a|"; http_header; content:"|0d 0a 0d 0a|"; classtype:exploit-kit; sid:2017703; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2013_11_12, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)