Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Filename explorer.exe Download - Common Hostile Filename"; flow:established,to_client; http.header; content:"filename="; content:"explorer.exe"; nocase; within:13; fast_pattern; pcre:"/^Content-Disposition\x3a attachment\x3b filename=[\x27\x22]explorer\.exe[\x22\x27]\r\n/mi"; classtype:trojan-activity; sid:2020199; rev:7; metadata:created_at 2015_01_16, signature_severity Major, updated_at 2020_05_14;)