alert tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Goldoon Botnet CnC Response (Tasking)"; flow:established,to_client; flowbits:isset,ET.Goldoon.Checkin; content:"|00 00 00 01 00 00 00 0a 00 00 00 06|Thread|00 00 00|"; startswith; fast_pattern; content:"|04|Time|00 00 00|"; within:40; content:"|06|Method|00 00 00|"; within:40; content:"|08|AttackId|00 00 00|"; within:40; content:"|08|Hostname|00 00 00|"; within:40; content:"|08|Protocol|00 00 00|"; within:40; content:"|06|Target|00 00 00|"; within:30; content:"|04|Type|00 00 00|"; within:100; content:"|05|dPort|00 00 00|"; within:40; content:"|04|IsV6|00 00 00|"; within:40; threshold:type limit, seconds 120, count 1, track by_dst; reference:url,www.fortinet.com/blog/threat-research/new-goldoon-botnet-targeting-d-link-devices; classtype:trojan-activity; sid:2052396; 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 High, signature_severity Major, updated_at 2024_05_03; target:dest_ip;)