alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE MS_D0wnl0ad3r Screenshot Upload"; flow:to_server,established; http.method; content:"POST"; http.header; content:"boundary=MS_D0wnl0ad3r"; reference:md5,f40248a592ed711d95eb8b48b31a1ed8; classtype:trojan-activity; sid:2026361; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_09_24, deployment Perimeter, malware_family Downloader, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_25;)