Downloaded URL Files

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Identifies .url shortcut files downloaded from outside the local network. These shortcut files are commonly used in phishing campaigns.

Rule type: eql

Rule indices:

  • logs-endpoint.events.file-*

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: None

Tags:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Execution
  • Data Source: Elastic Defend
  • Rule Type: BBR

Version: 2

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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file where host.os.type == "windows" and event.type == "creation" and file.extension == "url"
   and file.Ext.windows.zone_identifier > 1 and not process.name : "explorer.exe"

Framework: MITRE ATT&CKTM