Versions (4)
Version DetailsCurrent
Rev: 1 • Feb 11, 2021, 12:00 PMET USER_AGENTS Suspicious User-Agent (aaaa)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspicious User-Agent (aaaa)"; flow:established,to_server; http.user_agent; content:"aaaa"; bsize:4; reference:md5,61e213e717cc8e156cec79a7c1cd0c64; classtype:bad-unknown; sid:2031613; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_02_11, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_02_11;)
Feb 11, 2021, 12:00 PM
Feb 11, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 15, 2025, 9:36 PM
rules/emerging-user_agents.rules