Detection rules › Splunk
Crowdstrike Admin With Duplicate Password
The following analytic detects CrowdStrike alerts for admin accounts with duplicate password risk, identifying instances where administrative users share the same password. This practice significantly increases the risk of unauthorized access and potential breaches. Addressing these alerts promptly is crucial for maintaining strong security protocols, ensuring each admin account uses a unique, secure password to protect critical systems and data.
Known false positives
- No false positives have been identified at this time.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Credential Access |
Rule body
name: Crowdstrike Admin With Duplicate Password
id: b8bccfbf-6ac2-40f2-83b6-e72b7efaa7d4
version: 9
creation_date: '2024-07-31'
modification_date: '2026-05-13'
author: Teoderick Contreras, Splunk
status: production
type: TTP
description: The following analytic detects CrowdStrike alerts for admin accounts with duplicate password risk, identifying instances where administrative users share the same password. This practice significantly increases the risk of unauthorized access and potential breaches. Addressing these alerts promptly is crucial for maintaining strong security protocols, ensuring each admin account uses a unique, secure password to protect critical systems and data.
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_admin_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
finding:
title: Duplicate Password for Admin User found on $domain$
entity:
field: user
type: user
score: 50
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
Stages and Predicates
Stage 1: search
`crowdstrike_identities` primaryDisplayName = "*admin*"
Stage 2: rename
| 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
Stage 3: stats
| stats count min(_time) as firstTime max(_time) as lastTime
BY domain dn primaryDisplayName
risk_type severity riskScore
riskScoreSeverity user role_type
Stage 4: where
| where risk_type = "DUPLICATE_PASSWORD"
Stage 5: search
| `security_content_ctime(firstTime)`
Stage 6: search
| `security_content_ctime(lastTime)`
Stage 7: search
| `crowdstrike_admin_with_duplicate_password_filter`
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
primaryDisplayName | eq |
| field:"primaryDisplayName" kind:eq |
risk_type | eq |
| field:"risk_type" kind:eq |
sourcetype | eq |
| field:"sourcetype" kind:eq value:"crowdstrike:identities" |