alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO DNS Over HTTP Style Request (GET)"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/resolve?type="; startswith; fast_pattern; content:"&short="; within:12; content:"&name="; within:10; http.header_names; content:!"Referer"; http.host; pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/"; reference:md5,8feb11d15b708736189779ddc51a4a0a; classtype:misc-activity; sid:2048359; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_09_29, deployment Perimeter, former_category INFO, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_09_29, reviewed_at 2023_09_29; target:src_ip;)
Metadata | |
---|
attack_target | Client_Endpoint |
created_at | 2023_09_29 |
deployment | Perimeter |
former_category | INFO |
performance_impact | Low |
confidence | Medium |
signature_severity | Informational |
updated_at | 2023_09_29 |
reviewed_at | 2023_09_29 |