Rule History

SID: 2017607 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Oct 17, 2013, 12:00 PM

Message:

ET WEB_SERVER PHP WebShell Embedded In GIF (INBOUND)

Rule:

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER PHP WebShell Embedded In GIF (INBOUND)"; flow:established,from_server; file_data; content:"GIF89"; within:5; content:"<?php"; fast_pattern; distance:0; reference:url,blog.spiderlabs.com/2013/10/hiding-webshell-backdoor-code-in-image-files.html; classtype:successful-admin; sid:2017607; rev:2; metadata:created_at 2013_10_17, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;)

Created:

Oct 17, 2013, 12:00 PM

Updated:

Jul 26, 2019, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Oct 20, 2025, 3:34 PM

Filename:

rules/emerging-web_server.rules