通过 XZ 后门潜在执行

sequence by host.id, user.id with maxspan=1s
 [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.name == "sshd" and
    process.args == "-D" and process.args == "-R"] by process.pid, process.entity_id
 [process where host.os.type == "linux" and event.type == "start" and event.action == "exec" and process.parent.name == "sshd" and
  process.executable != null and not (
    process.executable in ("/usr/sbin/sshd", "/usr/sbin/unix_chkpwd", "/usr/bin/google_authorized_keys", "/usr/bin/fipscheck") or
    process.args like ("rsync*", "systemctl*", "/usr/sbin/unix_chkpwd", "/usr/bin/google_authorized_keys", "/usr/sbin/aad_certhandler*") or
    process.command_line like "sh -c /usr/bin/env -i PATH=*"
  )] by process.parent.pid, process.parent.entity_id
 [process where host.os.type == "linux" and event.action == "end" and process.name == "sshd" and process.exit_code != 0] by process.pid, process.entity_id
 [network where host.os.type == "linux" and event.type == "end" and event.action == "disconnect_received" and process.name == "sshd"] by process.pid, process.entity_id