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Elastic Docs ›Elastic Security Solution [7.16] ›Detections and alerts ›Prebuilt rule reference

Attempt to Mount SMB Share via Command Line

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Attempt to Mount SMB Share via Command Line

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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-*
  • logs-endpoint.events.*

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

References:

Tags:

  • 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 query

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

Threat mapping

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Framework: MITRE ATT&CKTM

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