alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Koubbeh Sending Windows System Info"; flow:established,to_server; http.method; content:"GET"; http.uri.raw; content:"/api/ping//?"; startswith; fast_pattern; http.user_agent; content:"|3b| WinHttp.WinHttpRequest.5|29|"; reference:md5,3883ea48ee84f9b084e0920bc185bc39; classtype:trojan-activity; sid:2032882; rev:1; metadata:attack_target Client_Endpoint, created_at 2021_04_27, deployment Perimeter, deployment SSLDecrypt, malware_family Win32_Koubbeh, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_27;)