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Persistence via Microsoft Outlook VBA

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Persistence via Microsoft Outlook VBA

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Detects attempts to establish persistence on an endpoint by installing a rogue Microsoft Outlook VBA Template.

Rule type: eql

Rule indices:

  • logs-endpoint.events.file-*
  • winlogbeat-*
  • logs-windows.sysmon_operational-*
  • endgame-*
  • logs-m365_defender.event-*
  • logs-sentinel_one_cloud_funnel.*

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:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Persistence
  • Data Source: Elastic Endgame
  • Data Source: Elastic Defend
  • Data Source: Sysmon
  • Data Source: Microsoft Defender for Endpoint
  • Data Source: SentinelOne

Version: 307

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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file where host.os.type == "windows" and event.type != "deletion" and
 file.path : "C:\\Users\\*\\AppData\\Roaming\\Microsoft\\Outlook\\VbaProject.OTM"

Framework: MITRE ATT&CKTM

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