ET WEB_SERVER Image Content-Type with Obfuscated PHP (Seen with C99 Shell)

7.0.35.0SID: 2015755Rev: 5Enabled1 views
Sourceet/open
Fileemerging-web_server.rules
CreatedOctober 2, 2012
UpdatedMarch 6, 2024
Classificationattempted-user
alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_SERVER Image Content-Type with Obfuscated PHP (Seen with C99 Shell)"; flow:established,to_client; 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:5; metadata:created_at 2012_10_02, signature_severity Major, updated_at 2024_03_06, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information;)

References

urlmalwaremustdie.blogspot.jp/2012/10/how-far-phpc99shell-malware-can-go-from.html

Metadata

created at2012_10_02
signature severityMajor
updated at2024_03_06
mitre tactic idTA0005
mitre tactic nameDefense_Evasion
mitre technique idT1027
mitre technique nameObfuscated_Files_or_Information

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