alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Maldoc Second Stage VBS Downloader with URL Padding"; flow:established,to_server; http.uri; content:".exe???????????????"; nocase; fast_pattern; pcre:"/\.exe\?+$/i"; http.user_agent; content:"WinHttp.WinHttpRequest."; reference:md5,57ce6f966c6b441fe82a211647c6e863; classtype:trojan-activity; sid:2023739; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2017_01_12, deployment Perimeter, malware_family Maldoc, performance_impact Low, confidence High, signature_severity Major, tag MalDoc, updated_at 2020_10_07;)