✄𐘗
text code block:
✄𐘗sequence by host.id, process.entity_id with maxspan=1s
  [process where host.os.type == "linux" and event.type == "start" and event.action in ("exec", "fork") and (
    (process.name : "python*" and process.args : "-c" and process.args : (
     "*import*pty*spawn*", "*import*subprocess*call*"
    )) or
    (process.name : "perl*" and process.args : "-e" and process.args : "*socket*" and process.args : (
     "*exec*", "*system*"
    )) or
    (process.name : "ruby*" and process.args : ("-e", "-rsocket") and process.args : (
     "*TCPSocket.new*", "*TCPSocket.open*"
     )) or
    (process.name : "lua*" and process.args : "-e" and process.args : "*socket.tcp*" and process.args : (
     "*io.popen*", "*os.execute*"
    )) or
    (process.name : "php*" and process.args : "-r" and process.args : "*fsockopen*" and process.args : "*/bin/*sh*") or
    (process.name : ("awk", "gawk", "mawk", "nawk") and process.args : "*/inet/tcp/*") or
    (process.name : "openssl" and process.args : "-connect") or
    (process.name : ("nc", "ncat", "netcat") and process.args == "-e" and process.args_count >= 3 and
     not process.args == "-z") or
    (process.name : "telnet" and process.args_count >= 3)
  ) and process.parent.name : (
    "bash", "dash", "sh", "tcsh", "csh", "zsh", "ksh", "fish", "python*", "php*", "perl", "ruby", "lua*",
    "openssl", "nc", "netcat", "ncat", "telnet", "awk")]
  [network where host.os.type == "linux" and event.type == "start" and event.action in ("connection_attempted", "connection_accepted") and
    process.name : ("python*", "php*", "perl", "ruby", "lua*", "openssl", "nc", "netcat", "ncat", "telnet", "awk") and
    destination.ip != null and not cidrmatch(destination.ip, "127.0.0.0/8", "169.254.0.0/16", "224.0.0.0/4", "::1")]