alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET EXPLOIT Possible CVE-2017-0199 HTA Inbound"; flow:established,from_server; flowbits:isset,et.IE7.NoRef.NoCookie; http.content_type; content:"application/hta"; bsize:15; file.data; content:"|7b 5c 72 74|"; distance:1; content:"|7b 5c|"; distance:0; content:"|7b 5c|"; distance:0; classtype:trojan-activity; sid:2024192; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product MS_Office, attack_target Client_Endpoint, created_at 2017_04_10, cve CVE_2017_0199, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag CISA_KEV, updated_at 2020_08_11;)