IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Potential Network Scan Executed From Host Potential Network Sweep Detected »
Elastic Docs ›Elastic Security Solution [8.15] ›Detections and alerts ›Prebuilt rule reference

Potential Network Share Discovery

edit

Potential Network Share Discovery

edit

Adversaries may look for folders and drives shared on remote systems to identify sources of information to gather as a precursor for collection and identify potential systems of interest for Lateral Movement.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-windows.*
  • logs-system.security*

Severity: low

Risk score: 21

Runs every: 60m

Searches indices from: now-119m (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: Discovery
  • Tactic: Collection
  • Rule Type: BBR
  • Data Source: System

Version: 106

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

edit
sequence by user.name, source.port, source.ip with maxspan=15s
 [file where event.action == "network-share-object-access-checked" and
  winlog.event_data.ShareName in ("\\\\*\\ADMIN$", "\\\\*\\C$") and
  source.ip != null and source.ip != "0.0.0.0" and source.ip != "::1" and source.ip != "::" and source.ip != "127.0.0.1"]
 [file where event.action == "network-share-object-access-checked" and
  winlog.event_data.ShareName in ("\\\\*\\ADMIN$", "\\\\*\\C$") and
  source.ip != null and source.ip != "0.0.0.0" and source.ip != "::1" and source.ip != "::" and source.ip != "127.0.0.1"]

Framework: MITRE ATT&CKTM

« Potential Network Scan Executed From Host Potential Network Sweep Detected »