IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Attempt to Mount SMB Share via Command Line
editAttempt to Mount SMB Share via Command Line
editIdentifies 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: 5m
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: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Investigation guide
edit## Setup If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
Rule query
editprocess 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://*")
) and
not process.parent.executable : "/Applications/Google Drive.app/Contents/MacOS/Google Drive"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Lateral Movement
- ID: TA0008
- Reference URL: https://attack.mitre.org/tactics/TA0008/
-
Technique:
- Name: Remote Services
- ID: T1021
- Reference URL: https://attack.mitre.org/techniques/T1021/
-
Sub-technique:
- Name: SMB/Windows Admin Shares
- ID: T1021.002
- Reference URL: https://attack.mitre.org/techniques/T1021/002/