alert tcp any any -> [$HOME_NET,$HTTP_SERVERS] any (msg:"ET MALWARE Mirai pTea Variant - Info Submission Inbound"; flow:established,to_server; dsize:<300; content:"|3a 31 34 b5 02 00|"; startswith; reference:url,blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability/; classtype:command-and-control; sid:2033241; rev:1; metadata:affected_product Linux, attack_target Server, created_at 2021_07_05, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_07_05;)