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Modern NDR
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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, or built-in tools such as net.exe, make enumeration relatively easy to perform. Attackers can identify high privilege users as a precursor to lateral movement or additional attacks.
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 to enumerate users, administrators, domains, or groups on the network. Active Directory (AD) is the directory service in a domain-based Windows environment; however, 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 account information is to send Remote Procedure Call (RPC) queries to account databases over the Microsoft SAM remote (MS-SAMR) interface. Queries contain the MS-SAMR operation name and a security identifier (SID). The SID sometimes includes a relative identifier (RID) that specifies a unique object in the domain.
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
Because securing Active Directory domains can be difficult without compromising functionality, monitor and investigate unusual domain activity quickly to minimize potential damage
