Exporting Exchange Mailbox via PowerShell
editExporting Exchange Mailbox via PowerShell
editIdentifies the use of the Exchange PowerShell cmdlet, New-MailBoxExportRequest, to export the contents of a primary mailbox or archive to a .pst file. Adversaries may target user email to collect sensitive information.
Rule type: eql
Rule indices:
- logs-endpoint.events.*
- winlogbeat-*
- logs-windows.*
Severity: medium
Risk score: 47
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
- Windows
- Threat Detection
- Collection
Version: 5
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editprocess where event.type in ("start", "process_started") and
process.name: ("powershell.exe", "pwsh.exe") and process.args : "New-MailboxExportRequest*"
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Collection
- ID: TA0009
- Reference URL: https://attack.mitre.org/tactics/TA0009/
-
Technique:
- Name: Email Collection
- ID: T1114
- Reference URL: https://attack.mitre.org/techniques/T1114/
-
Sub-technique:
- Name: Remote Email Collection
- ID: T1114.002
- Reference URL: https://attack.mitre.org/techniques/T1114/002/
-
Technique:
- Name: Data from Local System
- ID: T1005
- Reference URL: https://attack.mitre.org/techniques/T1005/