alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Parallax CnC Activity (set) M15"; flow:established,to_server; content:"|ed 69 e6 bd|"; startswith; fast_pattern; content:"|fb 5f 07|"; distance:1; within:3; flowbits:set,ET.Parallax-15; flowbits:noalert; reference:md5,bf815840ff00a0c3ba04d47cc2d158ee; classtype:command-and-control; sid:2034430; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_11_11, deployment Perimeter, malware_family Parallax, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_11_11;)