Unauthorized Account Management

Summary:

The document outlines a security rule for detecting unauthorized users managing accounts in a Windows environment by triggering an alert when actions like creating or deleting user/group accounts match predefined criteria, indicating unauthorized access. If the action is performed by someone not listed as authorized (Admin User Names), it triggers notifications to the Security Team (ST). This includes writing the unauthorized user's username to "UnAuth User Performing Acct Mgmt" and modifying the event name and severity level before sending notifications. The rule uses aggregation techniques, checks for specific criteria in triggered events, and ensures only authorized personnel can manage accounts by converting all entries in an active list of admin user names to uppercase letters.

Details:

The provided document outlines a security rule designed to detect unauthorized individuals managing accounts in a Windows environment, specifically focusing on user and group account actions. This rule is initiated when an event from a Windows system, such as the creation or deletion of user/group accounts, triggers a Security Event ID that matches predefined criteria for account management activities. The detection mechanism involves checking if the action was performed by someone not listed in authorized users (Admin User Names), provided by Security Administration. If this condition is met, an alert is triggered indicating unauthorized access to account management functions. To address such unauthorized actions, a notification system is activated, which includes writing the unauthorized user's username to a specific list called "UnAuth User Performing Acct Mgmt". This action also modifies the event name and increases its severity level from standard to 8 before sending notifications to Security Team (ST). This rule not only identifies potential security breaches but also serves as a monitoring tool for account management activities, ensuring that only authorized personnel can perform these tasks. Additionally, it outlines how the rule uses aggregation techniques to categorize and prioritize similar events based on common attributes found in triggered events. The diagram provided further illustrates which resources are involved in implementing this rule. In summary, this rule is a critical component of an enterprise's security infrastructure aimed at preventing unauthorized access to account management functionalities within a Windows environment. It uses predefined lists and event identification to alert administrators when unauthorized individuals attempt to manage user or group accounts. This text discusses a method for managing user names in a system by converting them to uppercase letters. The purpose of this conversion is to prevent human error and ensure proper functioning of management processes. Specifically, all entries within an active list related to administrative user names must be entered in uppercase letters. Additionally, the document mentions that when groups are modified, they will appear under "destinationUserName," while the account being added or deleted will appear as "deviceCustomString6." This information pertains to security event IDs and group modifications within a system environment.

Disclaimer:

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