alert http $HOME_NET any -> $EXTERNAL_NET 9000 (msg:"ET MALWARE PNScan.2 CnC Beacon 2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:"/srv_report?ver="; fast_pattern; pcre:"/\?ver=\d+$/"; http.header_names; content:!"Referer|0d 0a|"; reference:url,blog.malwaremustdie.org/2016/08/mmd-0054-2016-pnscan-elf-worm-that.html; reference:url,vms.drweb.com/virus/?_is=1&i=7299536; classtype:command-and-control; sid:2023090; rev:4; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2016_08_25, deployment Perimeter, deployment Datacenter, malware_family PNScan_2, signature_severity Major, tag c2, updated_at 2020_10_06, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;)