alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Likely Geodo/Emotet Downloading PE"; flow:established,to_server; http.method; content:"GET"; nocase; http.uri; content:"/mss"; fast_pattern; content:".exe"; endswith; pcre:"/\/mss\d+\.exe$/"; http.header_names; content:!"Accept-"; content:!"Referer|0d 0a|"; reference:md5,6c4d198794d1afd2b8bbae6f16bdfaa7; classtype:trojan-activity; sid:2035043; rev:5; metadata:created_at 2015_03_17, deprecation_reason Age, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_27, reviewed_at 2024_03_27;)