Rule History

SID: 2029544 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Feb 27, 2020, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (VB OpenUrl)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (VB OpenUrl)"; flow:to_server,established; http.user_agent; bsize:10; content:"VB OpenUrl"; classtype:bad-unknown; sid:2029544; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_02_27, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_02_27;)

Created:

Feb 27, 2020, 12:00 PM

Updated:

Feb 27, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 19, 2025, 10:35 PM

Filename:

rules/emerging-user_agents.rules