Attempt to Mount SMB Share via Command Lineedit

Identifies the execution of macOS built-in commands to mount a Server Message Block (SMB) network share. Adversaries may use valid accounts to interact with a remote network share using SMB.

Rule type: eql

Rule indices:

  • auditbeat-*

Severity: low

Risk score: 21

Runs every: 5 minutes

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100



  • Elastic
  • Host
  • macOS
  • Threat Detection
  • Lateral Movement

Version: 1

Added (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Rule queryedit

process where event.type in ("start", "process_started") and ( : "mount_smbfs" or ( : "open" and
process.args : "smb://*") or ( : "mount" and
process.args : "smbfs") or ( : "osascript" and
process.command_line : "osascript*mount volume*smb://*") )

Threat mappingedit