Rule History

SID: 2007840 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 12 • Jul 30, 2010, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent Possible Trojan Downloader Shell

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent Possible Trojan Downloader Shell"; flow:established,to_server; http.user_agent; content:"Shell"; depth:5; endswith; nocase; reference:url,www.securelist.com/en/blog/434/The_Chinese_bootkit; classtype:trojan-activity; sid:2007840; rev:12; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence Medium, signature_severity Major, tag User_Agent, tag Trojan_Downloader, updated_at 2020_10_16;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Oct 16, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

May 30, 2025, 12:04 AM

Filename:

rules/emerging-user_agents.rules