alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Request for Malicious .dat File"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".dat"; endswith; http.user_agent; content:"Microsoft Internet Explorer"; bsize:27; fast_pattern; http.header_names; content:!"Referer"; content:!"Accept"; reference:md5,660d1132888b2a2ff83b695e65452f87; classtype:trojan-activity; sid:2030334; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_06_15, deployment Perimeter, confidence High, signature_severity Major, updated_at 2020_06_15;)