alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Nitrogen Loader Activity"; flow:established,to_server; http.uri; content:"/chat/"; startswith; pcre:"/^[a-zA-Z0-9+=/]{10}/R"; http.cookie; content:"password.log|3d|"; startswith; fast_pattern; reference:url,www.threatdown.com/blog/nitrogen-05-03-2024/; classtype:trojan-activity; sid:2052397; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_05_03, deployment Perimeter, deployment SSLDecrypt, malware_family Nitrogen_Loader, performance_impact Low, confidence Medium, signature_severity Major, updated_at 2024_05_03; target:src_ip;)