alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET POLICY NSecSoft Remote Monitoring Update/Download Activity M1"; flow:established,to_server; http.method; content:"POST"; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.header_names; content:"|0d 0a|NSEC-UID|0d 0a|"; fast_pattern; http.request_body; content:"|3c|sessions|20|uid|3d 22|"; startswith; content:"|22 20|user|3d 22|"; distance:0; content:"|2f 3e 3c 2f|sessions|3e|"; endswith; reference:md5,4a14459e5dbadb86417483dba7174ffa; classtype:bad-unknown; sid:2034144; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_10_06, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_10_06;)