alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Grizzly Loader Payload Request"; flow:established,to_server; http.method; content:"GET"; http.uri; pcre:"/^\x2f(?:[a-zA-Z0-9]{5})\x2fget\x2f(?:[A-Z])\w{3,10}(?:[A-Z])\w{3,10}\x2ejs$/"; http.user_agent; content:"WindowsPowerShell"; fast_pattern; classtype:trojan-activity; sid:2071866; rev:1; metadata:affected_product Windows_Client, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2026_08_31, deployment Perimeter, deployment SSLDecrypt, malware_family GrizzlyLoader, confidence High, signature_severity Major, tag c2, updated_at 2026_08_31, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol; target:src_ip;)