Rule History

SID: 2008512 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 19 • Jul 30, 2010, 12:00 PM

Message:

ET HUNTING Suspicious User-Agent (C slash)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET HUNTING Suspicious User-Agent (C slash)"; flow:established,to_server; threshold:type limit,count 2,track by_src,seconds 300; http.header; content:!"|5c|Citrix|5c|"; content:!"|5c|Panda S"; nocase; content:!"|5c|Mapinfo"; nocase; http.user_agent; content:"C|3a 5c|"; depth:3; fast_pattern; classtype:trojan-activity; sid:2008512; rev:19; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence Medium, signature_severity Major, tag User_Agent, updated_at 2020_10_17;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Oct 17, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-hunting.rules