Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Angler EK Landing URI Struct Jun 11"; flow:to_server,established; urilen:>22; content:"/?"; offset:12; depth:86; fast_pattern; pcre:"/^\/[a-z]{3,20}(?P<sep>[_-])[a-z]{3,20}(?P=sep)[a-z]{3,20}(?:(?P=sep)[a-z]{3,20}\/\?[a-z]{6,}=\d{15,20}|(?:(?P=sep)[a-z]{3,20})?\/\?[a-z]{6,}=\d{10,13})$/U"; pcre:"/Referer\x3a\x20http\x3a\x2f+(?P<refhost>[^\x3a\x2f\r\n]+).*?\r\nHost\x3a\x20(?!(?:(?P=refhost)|www\.))/Hsi"; flowbits:set,AnglerEK; classtype:exploit-kit; sid:2021248; rev:8; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_06_11, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)