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Rev: 1 • Aug 21, 2020, 12:00 PMET USER_AGENTS Suspected Mekotio User-Agent (4M5yC6u4stom5U8se3r)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspected Mekotio User-Agent (4M5yC6u4stom5U8se3r)"; flow:established,to_server; http.user_agent; content:"4M5yC6u4stom5U8se3r"; bsize:19; fast_pattern; reference:url,www.welivesecurity.com/2020/08/13/mekotio-these-arent-the-security-updates-youre-looking-for/; classtype:trojan-activity; sid:2030722; rev:1; metadata:attack_target Client_Endpoint, created_at 2020_08_21, deployment Perimeter, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_08_21;)
Aug 21, 2020, 12:00 PM
Aug 21, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 17, 2025, 9:34 PM
rules/emerging-user_agents.rules