alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET ADWARE_PUP Win32/DownloadAssistant.Q Variant Checkin"; flow:established,to_server; http.method; content:"POST"; http.uri; bsize:10; content:"/v2/events"; fast_pattern; http.request_body; pcre:"/^[A-F0-9]+$/"; http.header_names; bsize:50; content:"|0d 0a|Connection|0d 0a|User-Agent|0d 0a|Content-Length|0d 0a|Host|0d 0a 0d 0a|"; reference:md5,0ec90cb6e0e3f8cd86d5d1d08f184e5f; classtype:pup-activity; sid:2029210; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_30, deployment Perimeter, performance_impact Low, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_30;)