alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET RETIRED GoLinux/GoTrim CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/selects?dram=1"; fast_pattern; bsize:15; http.request_body; content:"img="; startswith; pcre:"/^[a-f0-9]{100}/R"; reference:url,www.fortinet.com/blog/threat-research/gotrim-go-based-botnet-actively-brute-forces-wordpress-websites; classtype:trojan-activity; sid:2042951; rev:2; metadata:affected_product Linux, attack_target Client_and_Server, created_at 2022_12_15, deployment Perimeter, former_category MALWARE, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_09_23, reviewed_at 2024_09_23;)