alert http $HOME_NET any -> any any (msg:"ET MALWARE SNOWLIGHT C2 HTTP Requests"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"|2f 3f|a|3d|"; fast_pattern; content:"h|3d|"; content:"t|3d|ws|5f|"; content:"p|3d|"; reference:url,sysdig.com/blog/unc5174-chinese-threat-actor-vshell/; classtype:trojan-activity; sid:2061614; rev:1; metadata:attack_target Client_Endpoint, tls_state plaintext, created_at 2025_04_15, deployment Perimeter, confidence High, signature_severity Major, tag c2, updated_at 2025_04_15; target:src_ip;)