IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« Suspicious Execution via Microsoft Office Add-Ins Suspicious JetBrains TeamCity Child Process »
Elastic Docs ›Elastic Security Solution [8.15] ›Downloadable rule update v8.15.8

First Time Seen Removable Device

edit

First Time Seen Removable Device

edit

Identifies newly seen removable devices by device friendly name using registry modification events. While this activity is not inherently malicious, analysts can use those events to aid monitoring for data exfiltration over those devices.

Rule type: new_terms

Rule indices:

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

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:

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

Version: 7

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

edit
event.category:"registry" and host.os.type:"windows" and registry.value:"FriendlyName" and registry.path:*USBSTOR*

Framework: MITRE ATT&CKTM

« Suspicious Execution via Microsoft Office Add-Ins Suspicious JetBrains TeamCity Child Process »