Rule History

SID: 2030721 • Source: et/open

Versions (4)

Version DetailsCurrent

Rev: 1 • Aug 21, 2020, 12:00 PM

Message:

ET USER_AGENTS Suspected Mekotio User-Agent (MyCustomUser)

Rule:

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET USER_AGENTS Suspected Mekotio User-Agent (MyCustomUser)"; flow:established,to_server; http.user_agent; content:"MyCustomUser"; bsize:12; fast_pattern; reference:url,www.welivesecurity.com/2020/08/13/mekotio-these-arent-the-security-updates-youre-looking-for/; classtype:trojan-activity; sid:2030721; 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;)

Created:

Aug 21, 2020, 12:00 PM

Updated:

Aug 21, 2020, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 16, 2025, 8:36 PM

Filename:

rules/emerging-user_agents.rules