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Multiple Vault Web Credentials Read

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Multiple Vault Web Credentials Read

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Windows Credential Manager allows you to create, view, or delete saved credentials for signing into websites, connected applications, and networks. An adversary may abuse this to list or dump credentials stored in the Credential Manager for saved usernames and passwords. This may also be performed in preparation of lateral movement.

Rule type: eql

Rule indices:

  • winlogbeat-*
  • logs-system.*
  • 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:

  • Domain: Endpoint
  • OS: Windows
  • Use Case: Threat Detection
  • Tactic: Credential Access

Version: 9

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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sequence by winlog.computer_name, winlog.process.pid with maxspan=1s

 /* 2 consecutive vault reads from same pid for web creds */

 [any where event.code : "5382" and
  (winlog.event_data.SchemaFriendlyName : "Windows Web Password Credential" and winlog.event_data.Resource : "http*") and
  not winlog.event_data.SubjectLogonId : "0x3e7" and
  not winlog.event_data.Resource : "http://localhost/"]

 [any where event.code : "5382" and
  (winlog.event_data.SchemaFriendlyName : "Windows Web Password Credential" and winlog.event_data.Resource : "http*") and
  not winlog.event_data.SubjectLogonId : "0x3e7" and
  not winlog.event_data.Resource : "http://localhost/"]

Framework: MITRE ATT&CKTM

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