Versions (4)
Version DetailsCurrent
Rev: 4 • Oct 2, 2012, 12:00 PMET WEB_SERVER Image Content-Type with Obfuscated PHP (Seen with C99 Shell)
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SERVER Image Content-Type with Obfuscated PHP (Seen with C99 Shell)"; flow:from_server,established; http.content_type; content:"image/"; startswith; file.data; content:"eval(gzinflate(base64_decode("; distance:0; fast_pattern; reference:url,malwaremustdie.blogspot.jp/2012/10/how-far-phpc99shell-malware-can-go-from.html; classtype:attempted-user; sid:2015755; rev:4; metadata:created_at 2012_10_02, signature_severity Major, updated_at 2020_04_22, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)
Oct 2, 2012, 12:00 PM
Apr 22, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-web_server.rules