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DETECTION OVERVIEW
Risk Factors
Enumeration is a simple but important step taken by attackers after an initial network compromise. Reconnaissance tools such as Bloodhound make enumeration relatively easy to perform. Enumeration activity typically does not negatively affect network performance, but attackers can leverage this information to find new targets in an attack campaign.
The system might change the risk score for this detection.
Kill Chain
Risk Score
37
After infiltrating a network, an attacker typically looks for privileged users as their next target. To find these users, an attacker might connect to directory services or accounts to enumerate users, domains, groups, or aliases on the network. Active Directory (AD) is the directory service in a domain-based Windows environment, and every Windows device also has a built-in account database called the Security Account Manager (SAM), which stores local account information. One approach for enumerating members associated with an alias is to send Microsoft Remote Procedure Call (RPC) queries to account databases over the Security Account Manager Remote Protocol (MS-SAMR) interface.
Upgrade Windows to Windows 10 version 1607 or later, which restricts SAM access to only local administrators
Prevent unauthorized users from accessing MS-SAMR by placing restrictions on which clients are allowed to remotely query MS-SAMR
Limit the number of users with local administrator privileges in your environment
