alert http $EXTERNAL_NET any -> $HOME_NET 9000 (msg:"ET MALWARE PNScan.2 Inbound Status Check - set"; flow:established,to_server; urilen:6; flowbits:set,ET.PNScan.2; flowbits:noalert; http.uri; content:"/check"; fast_pattern; 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:trojan-activity; sid:2023087; rev:4; metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2016_08_25, deployment Perimeter, deployment Datacenter, malware_family PNScan_2, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_10_06;)