Rule History

SID: 2037828 • Source: et/open

Versions (5)

Version DetailsCurrent

Rev: 1 • Jul 26, 2022, 12:00 PM

Message:

ET USER_AGENTS Suspicious User-Agent (56)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (56)"; flow:to_server,established; http.user_agent; content:"56"; bsize:2; depth:2; fast_pattern; reference:md5,c9ee1d6a90be7524b01814f48b39b232; classtype:trojan-activity; sid:2037828; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_26, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_26, reviewed_at 2024_12_02;)

Created:

Jul 26, 2022, 12:00 PM

Updated:

Jul 26, 2022, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 1, 2025, 8:35 PM

Filename:

rules/emerging-user_agents.rules