| ID | Technique | Tactic |
|---|---|---|
| T1078.002 | Domain Accounts | Defense Evasion |
Detection: Identify New User Accounts
DEPRECATED DETECTION
This detection has been marked as deprecated by the Splunk Threat Research team. This means that it will no longer be maintained or supported. If you have any questions or concerns, please reach out to us at research@splunk.com.
Description
This detection search will help profile user accounts in your environment by identifying newly created accounts that have been added to your network in the past week.
Search
1
2| from datamodel Identity_Management.All_Identities
3| eval empStatus=case((now()-startDate)<604800, "Accounts created in last week")
4| search empStatus="Accounts created in last week"
5| `security_content_ctime(endDate)`
6| `security_content_ctime(startDate)`
7| table identity empStatus endDate startDate
8| `identify_new_user_accounts_filter`
Data Source
No data sources specified for this detection.
Macros Used
| Name | Value |
|---|---|
| security_content_ctime | convert timeformat="%Y-%m-%dT%H:%M:%S" ctime($field$) |
| identify_new_user_accounts_filter | search * |
identify_new_user_accounts_filter is an empty macro by default. It allows the user to filter out any results (false positives) without editing the SPL.
Annotations
MITRE ATT&CK
Kill Chain Phases
NIST
CIS
Threat Actors
Delivery
Exploitation
Installation
DE.AE
CIS 10
Default Configuration
This detection is configured by default in Splunk Enterprise Security to run with the following settings:
| Setting | Value |
|---|---|
| Disabled | true |
| Cron Schedule | 0 * * * * |
| Earliest Time | -70m@m |
| Latest Time | -10m@m |
| Schedule Window | auto |
| Creates Risk Event | False |
This configuration file applies to all detections of type hunting.
Implementation
To successfully implement this search, you need to be populating the Enterprise Security Identity_Management data model in the assets and identity framework.
Known False Positives
If the Identity_Management data model is not updated regularly, this search could give you false positive alerts. Please consider this and investigate appropriately.
Associated Analytic Story
No associated analytic story
Detection Testing
| Test Type | Status | Dataset | Source | Sourcetype |
|---|---|---|---|---|
| Validation | Not Applicable | N/A | N/A | N/A |
| Unit | ❌ Failing | N/A | N/A |
N/A |
| Integration | ❌ Failing | N/A | N/A |
N/A |
Replay any dataset to Splunk Enterprise by using our replay.py tool or the UI.
Alternatively you can replay a dataset into a Splunk Attack Range
Source: GitHub | Version: 4