alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED DRIVEBY Angler EK Landing URI Struct Feb 21"; flow:established,to_server; urilen:<28; content:"/lists/"; depth:7; http_uri; pcre:"/^\/lists\/\d{15}(?:\d{5})?$/U"; classtype:exploit-kit; sid:2020497; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Any, attack_target Client_Endpoint, created_at 2015_02_22, deployment Perimeter, malware_family Angler, signature_severity Major, tag Angler, tag DriveBy, tag Exploit_Kit, updated_at 2019_07_26;)