Rule History

SID: 2019182 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 4 • Sep 16, 2014, 12:00 PM

Message:

ET WEB_SERVER HTTP POST Generic eval of base64_decode

Rule:

alert http $EXTERNAL_NET any -> $HTTP_SERVERS any (msg:"ET WEB_SERVER HTTP POST Generic eval of base64_decode"; flow:established,to_server; content:"eval"; nocase; pcre:"/^[\r\n\s]*?\x28[\r\n\s]*?base64_decode/Rsi"; http.request_body; content:"base64_decode"; nocase; fast_pattern; classtype:trojan-activity; sid:2019182; rev:4; metadata:created_at 2014_09_16, confidence Medium, signature_severity Major, updated_at 2020_09_25;)

Created:

Sep 16, 2014, 12:00 PM

Updated:

Sep 25, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-web_server.rules