Crowdstrike User with Duplicate Password

name: Crowdstrike User with Duplicate Password
id: 386dd914-16e5-400b-9bf6-25572cc4415a
version: 9
creation_date: '2024-07-31'
modification_date: '2026-05-13'
author: Teoderick Contreras, Splunk
status: production
type: Anomaly
description: The following analytic detects CrowdStrike alerts for non-admin accounts with duplicate password risk, identifying instances where multiple non-admin users share the same password. This practice weakens security and increases the potential for unauthorized access. Addressing these alerts is essential to ensure each user account has a unique, strong password, thereby enhancing overall security and protecting sensitive information.
data_source: []
search: |-
    `crowdstrike_identities` primaryDisplayName != "*admin*"
      | rename riskFactors{}.severity as severity, riskFactors{}.type as risk_type, roles{}.type as role_type, accounts{}.domain as domain, accounts{}.dn as dn, accounts{}.samAccountName as user
      | stats count min(_time) as firstTime max(_time) as lastTime
        BY domain dn primaryDisplayName
           risk_type severity riskScore
           riskScoreSeverity user role_type
      | where risk_type = "DUPLICATE_PASSWORD"
      | `security_content_ctime(firstTime)`
      | `security_content_ctime(lastTime)`
      | `crowdstrike_user_with_duplicate_password_filter`
how_to_implement: To implement crowdstrike:identities logs, use the Falcon Streaming API. Set up an API client, authenticate with your CrowdStrike credentials, and subscribe to the "crowdstrike:identities" event stream. Process and store the logs as needed, integrating them into your logging or SIEM system for monitoring and analysis.
known_false_positives: No false positives have been identified at this time.
references:
    - https://www.crowdstrike.com/wp-content/uploads/2022/12/CrowdStrike-Falcon-Event-Streams-Add-on-Guide-v3.pdf
intermediate_findings:
    entities:
        - field: user
          type: user
          score: 20
          message: User with Duplicate Password found on $domain$
analytic_story:
    - Compromised Windows Host
asset_type: Endpoint
mitre_attack_id:
    - T1110
product:
    - Splunk Enterprise
    - Splunk Enterprise Security
    - Splunk Cloud
category: endpoint
security_domain: endpoint