alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE HTA.BabyShark HTTP Exfil"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/upload.php"; http.request_body; content:"filename=|22|ttmp1.log|22|"; fast_pattern; content:"BEGIN|20|CERTIFICATE"; http.header_names; content:!"Referer"; content:!"User-Agent"; reference:md5,94b60cf91e550e1d981aaf9962d52e18; classtype:trojan-activity; sid:2027377; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_05_24, deployment Perimeter, malware_family BabyShark, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_31;)