alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Maldoc Downloading EXE Jul 26 2016"; flow:established,to_server; http.uri; content:!".exe"; nocase; pcre:"/\/(?:[a-z0-9]+_){4,}[a-z0-9]+(?:\/[a-f0-9]+)*?\/[a-f0-9]+\.(?![Ee][Xx][Ee])[a-z0-9]+$/"; http.user_agent; content:"Microsoft BITS"; startswith; fast_pattern; http.host; content:!".microsoft.com"; endswith; reference:md5,82fb5101847e734dd9b36f51f1fc73e3; classtype:trojan-activity; sid:2022983; rev:6; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2016_07_26, deployment Perimeter, deprecation_reason Age, malware_family MalDocGeneric, performance_impact Low, confidence Medium, signature_severity Major, tag MalDoc, updated_at 2024_04_08, reviewed_at 2024_04_08;)