Rule History

SID: 2026519 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 2 • Oct 18, 2018, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (Windows XP)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (Windows XP)"; flow:to_server,established; http.user_agent; content:"Windows XP"; depth:10; classtype:bad-unknown; sid:2026519; rev:2; metadata:affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2018_10_18, deployment Perimeter, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_26;)

Created:

Oct 18, 2018, 12:00 PM

Updated:

Aug 26, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 25, 2025, 9:34 PM

Filename:

rules/emerging-user_agents.rules