alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET DELETED Angler EK XTEA encrypted binary (16) M2"; flow:established,to_client; file_data; content:"|51 cb 7b fc 19 9b 77 fb|"; within:2048; flowbits:set,et.exploitkitlanding; classtype:exploit-kit; sid:2021280; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2015_06_16, deployment Perimeter, malware_family Angler, signature_severity Critical, tag Angler, tag Exploit_Kit, updated_at 2019_07_26;)