alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/BlackSun.B Retrieving Payload"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/web/getcommand.php?getcmd="; startswith; fast_pattern; content:"&uid="; distance:0; content:"&port="; distance:0; http.user_agent; content:"blacksun"; nocase; reference:md5,008e8ebdcfd68dcc065205c611b57834; classtype:trojan-activity; sid:2045311; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_05_03, deployment Perimeter, malware_family Win32_BlackSun_B, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_05_03;)