alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/VB.NBI CnC Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/api/soap/"; startswith; content:".php"; endswith; http.request_body; content:"|3c 3f|xml|20|version|3d 22|1|2e|0|22 20|encoding|3d 22|UTF|2d|8|22 3f 3e|"; startswith; content:"|22 3e 3c|username|20|"; distance:0; content:"|3c 2f|username|3e 3c|password|20|"; distance:0; fast_pattern; reference:md5,42691347a0ba4a593ffe3a230c579a77; classtype:command-and-control; sid:2037835; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_07_26, deployment Perimeter, malware_family Win32_VB_NBI, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_07_26;)