alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP PacketShare Proxy Connection Heartbeat (POST)"; flow:established,to_server; urilen:14; http.method; content:"POST"; http.uri; content:"/api/heartbeat"; http.host; content:"api.packetshare.io"; http.header_names; content:"|0d 0a|_os_version|0d 0a|"; content:"|0d 0a|_device_os|0d 0a|"; content:"|0d 0a|_timestamp|0d 0a|"; http.header; content:"|5f|brand|3a 20|packetshare|0d 0a|"; fast_pattern; reference:url,trendmicro.com/en_us/research/23/b/hijacking-your-bandwidth-how-proxyware-apps-open-you-up-to-risk.html; classtype:misc-activity; sid:2048497; rev:1; metadata:attack_target Client_Endpoint, created_at 2023_10_09, deployment Perimeter, confidence High, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, tag proxyware, updated_at 2023_10_09;)