T1136: Create Account
Adversaries may create an account to maintain access to victim systems. With a sufficient level of access, creating such accounts may be used to establish secondary credentialed access that do not require persistent remote access tools to be deployed on the system.
Accounts may be created on the local system or within a domain or cloud tenant. In cloud environments, adversaries may create accounts that only have access to specific services, which can reduce the chance of detection.
Positive Technologies products that cover the technique
MaxPatrol SIEM knowledge base
sap_java_suspicious_user_activity: PT-CR-536: SAPASJAVA_Create_account_and_login: A newly created user logged in
network_devices_compromise: PT-CR-1351: Checkpoint_Admin_Modification: Administrators were added or deleted on a Checkpoint device
Detection
ID | DS0009 | Data source and component | Process: Process Creation | Description | Monitor newly executed processes associated with account creation, such as net.exe |
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ID | DS0017 | Data source and component | Command: Command Execution | Description | Monitor executed commands and arguments for actions that are associated with account creation, such as net user or useradd |
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ID | DS0002 | Data source and component | User Account: User Account Creation | Description | Monitor for newly constructed user accounts through account audits to detect suspicious accounts that may have been created by an adversary. Collect data on account creation within a network or Windows Event ID 4720 (for when a user account is created on a Windows system and domain controller). |
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Mitigation
ID | M1030 | Name | Network Segmentation | Description | Configure access controls and firewalls to limit access to domain controllers and systems used to create and manage accounts. |
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ID | M1028 | Name | Operating System Configuration | Description | Protect domain controllers by ensuring proper security configuration for critical servers. |
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ID | M1032 | Name | Multi-factor Authentication | Description | Use multi-factor authentication for user and privileged accounts. |
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ID | M1026 | Name | Privileged Account Management | Description | Limit the number of accounts with permissions to create other accounts. Do not allow domain administrator accounts to be used for day-to-day operations that may expose them to potential adversaries on unprivileged systems. |
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