alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET DELETED Angler EK Post-infection HTTP Request Feb 20 2015"; flow:established,to_server; urilen:13; content:"GET"; http_method; content:"?"; http_uri; content:"HTTP/1.1|0d 0a|Connection|3a 20|Keep-Alive|0d 0a|"; fast_pattern:2,20; content:!"User-Agent|3a|"; http_header; content:!"Accept"; http_header; content:!"Referer"; http_header; pcre:"/^\/[a-z]{3}\?[A-F0-9]{8}$/U"; classtype:exploit-kit; sid:2020496; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_02_21, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)