Rule History

SID: 2030439 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 3 • Jul 1, 2020, 12:00 PM

Message:

ET USER_AGENTS Observed Suspicious UA (CODE)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious UA (CODE)"; flow:established,to_server; http.user_agent; bsize:4; content:"CODE"; fast_pattern; reference:md5,f5ee4c578976587586202c15e98997ed; classtype:bad-unknown; sid:2030439; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_01, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_10;)

Created:

Jul 1, 2020, 12:00 PM

Updated:

Mar 10, 2024, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 17, 2025, 9:34 PM

Filename:

rules/emerging-user_agents.rules