Rule History

SID: 2008216 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 11 • Jul 30, 2010, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (NSIS_DOWNLOAD)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (NSIS_DOWNLOAD)"; flow:to_server,established; threshold:type limit,count 2,track by_src,seconds 300; http.user_agent; content:"NSIS_DOWNLOAD"; nocase; depth:13; classtype:pup-activity; sid:2008216; rev:11; metadata:affected_product Any, attack_target Client_Endpoint, created_at 2010_07_30, deployment Perimeter, confidence High, signature_severity Minor, tag User_Agent, 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