Rule History

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Possible Evil Macro Downloading Trojan Dec 16 2015 Post to EXE"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".exe"; nocase; fast_pattern; pcre:"/^[\x2fa-z\d]+\.exe$/"; http.header; content:"Content-Length|3a 20|0|0d 0a|Connection|3a 20|"; content:"Accept|3a 20|*/*|0d 0a|"; depth:13; content:"Accept-Encoding|3a 20|gzip, deflate|0d 0a|User-Agent|3a 20|Mozilla/4.0 (compatible|3b 20|MSIE 7.0|3b|"; http.header_names; content:!"Referer|0d 0a|"; classtype:trojan-activity; sid:2022270; rev:5; metadata:created_at 2015_12_17, performance_impact Moderate, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_22;)