Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Angler EK Landing URI Struct Jun 15 M2"; flow:to_server,established; urilen:>26; content:"/search?"; http_uri; depth:8; content:!"."; http_uri; content:!"+"; http_uri; content:!"|20|"; http_uri; pcre:"/^\/search\?[a-z0-9]{1,5}=[a-z0-9]{1,5}(?:&[a-z0-9]{1,5}=[a-z0-9]{1,5}){4,}$/U"; pcre:"/Host\x3a\x20(?!www\.)(?P<refhost>[^\x3a\r\n]+).*?\r\nReferer\x3a\x20https?\x3a\x2f\x2f(?!(?P=refhost))/Hsi"; flowbits:set,AnglerEK; content:!"|2e 73 70 6f 72 74 73 61 75 74 68 6f 72 69 74 79 2e 63 6f 6d 0d 0a|"; http_header; content:!"|2e 72 65 73 75 6c 74 73 70 61 67 65 2e 63 6f 6d 0d 0a|"; http_header; classtype:exploit-kit; sid:2021270; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_06_15, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)