Rule History

SID: 2030586 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Jul 24, 2020, 12:00 PM

Message:

ET USER_AGENTS Observed Suspicious UA (.NET Framework Client)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Observed Suspicious UA (.NET Framework Client)"; flow:established,to_server; http.user_agent; bsize:21; content:".NET Framework Client"; classtype:bad-unknown; sid:2030586; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_07_24, deployment Perimeter, confidence High, signature_severity Informational, updated_at 2024_03_10, reviewed_at 2024_03_05;)

Created:

Jul 24, 2020, 12:00 PM

Updated:

Mar 10, 2024, 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