alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Fodcha Botnet Style DNS Server Lookup"; flow:established,to_server; http.request_line; content:"GET /geoip/?res=10&r HTTP/1.1"; fast_pattern; http.header_names; content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22; http.host; content:"1.1.1.1"; reference:url,blog.netlab.360.com/fodcha-is-coming-back-with-rddos/; classtype:trojan-activity; sid:2039783; rev:1; metadata:attack_target Client_Endpoint, created_at 2022_11_15, deployment Perimeter, malware_family Fodcha, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_11_15; target:src_ip;)