alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Goldoon Botnet CnC Checkin (SystemInfo)"; flow:established,to_server; flowbits:set,ET.Goldoon.Checkin; dsize:10; content:"SystemInfo"; fast_pattern; reference:url,www.fortinet.com/blog/threat-research/new-goldoon-botnet-targeting-d-link-devices; classtype:trojan-activity; sid:2052395; rev:1; metadata:affected_product Any, attack_target Client_and_Server, tls_state plaintext, created_at 2024_05_03, deployment Perimeter, malware_family Goldoon, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2024_05_03; target:src_ip;)