alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET INFO Dotted Quad Host DLL Request"; flow:established,to_server; flowbits:isset,http.dottedquadhost; flowbits:set,http.dottedquadhost.dll; flowbits:unset,http.dottedquadhost; http.uri; content:".dll"; fast_pattern; endswith; nocase; classtype:bad-unknown; sid:2027250; rev:6; metadata:attack_target Client_Endpoint, created_at 2019_04_23, deployment Perimeter, performance_impact Moderate, confidence High, signature_severity Minor, updated_at 2024_04_05;)