alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Angler EK Landing URI Struct Jun 11 M3"; flow:to_server,established; urilen:>22; content:"/?"; offset:12; depth:86; fast_pattern; pcre:"/^\/[a-z]{3,20}(?P<sep>[_-])[a-z]{3,20}(?P=sep)[a-z]{3,20}(?:(?P=sep)[a-z]{3,20}\/\?[a-z]{6,}=\d{15,20}|(?:(?P=sep)[a-z]{3,20})?\/\?[a-z]{6,}=\d{10,13})$/U"; content:!"Referer|3a|"; http_header; pcre:"/^Host\x3a\x20(?!www\.)[^\x2e]+(?:\.[^\x2e\r\n]+){2,}\r$/Hmi"; flowbits:set,AnglerEK; classtype:exploit-kit; sid:2021267; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_06_14, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)