Rule History

SID: 2009538 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 7 • Jul 30, 2010, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (ms_ie) - Crypt.ZPACK Gen Trojan Downloader GET Request

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (ms_ie) - Crypt.ZPACK Gen Trojan Downloader GET Request"; flow:established,to_server; threshold:type limit, count 2, track by_src, seconds 300; http.header; content:"User-Agent\: ms_ie|0d 0a|"; nocase; classtype:trojan-activity; sid:2009538; rev:7; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Major, tag User_Agent, tag Trojan_Downloader, updated_at 2020_08_13;)

Created:

Jul 30, 2010, 12:00 PM

Updated:

Aug 13, 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