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What uses Samr protocol?
The administrator does so by using the SAMR protocol. To perform this task, an administrator runs a client application from a client computer that targets a directory server in the Active Directory system. The client application uses the SAMR protocol to query the user’s group membership.
What is an Samr query?
Querying the Windows Security Account Manager (SAM) remotely via the SAM-Remote (SAMR) protocol against their victim’s domain machines, allows the attackers to get all domain and local users with their group membership and map possible routes within the victim’s network.
What is SAMr protocol?
SAMR is the act of querying a remote SAM database. Every Windows computer supports SAM. Computers assigned to a network domain, store information about their accounts in the domain’s SAM database.
What is user and group membership reconnaissance SAMr?
User and Group membership reconnaissance (SAMR) (external ID 2021) Previous name: Reconnaissance using directory services queries. Description. User and group membership reconnaissance are used by attackers to map the directory structure and target privileged accounts for later steps in their attack.
What port does Samr use?
More Info:
| Port | Use |
|---|---|
| 88 | Kerberos |
| 135 | TCP for RPC, EPM (Replication) |
| 389 | TCP, UDP for LDAP (Directory, Replication, User and Computer Authentication, Group Policy, Trusts) |
| 445 | TCP, UDP for SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc (Replication, User and Computer Authentication, Group Policy, Trusts) |
Who invented Samr?
Ruben Puentedura
A powerful conceptual tool to think about technology integration—and edtech’s best uses—is the SAMR model, developed in 2010 by education researcher Ruben Puentedura, who was the 1991 recipient of a Phi Beta Kappa teaching award.
What is ad enumeration?
Enumeration is the process of extracting information from the Active Directory (e.g. users and groups). In our examples we enumerate the ‘Domain Admins’ group but this could also be the Schema- or Enterprise Admins groups.
What is password enumeration?
User enumeration is when a malicious actor can use brute-force techniques to either guess or confirm valid users in a system. Once a list of validated usernames is created, the malicious actor can then perform another round of brute-force testing, but this time against the passwords until access is finally gained.
What is Dcerpc protocol used for?
DCE/RPC is a specification for a remote procedure call mechanism that defines both APIs and an over-the-network protocol. A DCE/RPC server’s endpoint mapper (EPMAP) will listen for incoming calls. A client will call this endpoint mapper and ask for a specific interface, which will be accessed on a different connection.
How is Samr beneficial to students?
The SAMR model is powerful because it enables us to think about how learning can be extended through the use of technology. SUBSTITUTION – Technology acts as a direct tool substitute, with no functional change. For example, students may type up notes on a word processor instead of writing by hand in an exercise book.
What are the four components of SAMR?
The SAMR model consists of four steps: Substitution, Augmentation, Modification, and Redefinition. Substitution and Augmentation are considered “Enhancement” steps, while Modification and Redefinition are “Transformation” steps.
What are the legitimate uses for SAMR queries?
Get answers from your peers along with millions of IT pros who visit Spiceworks. We recently configured Azure ATP for our domain and are out of the learning period for the alert User and group membership reconnaissance (SAMR). We are now getting several of these alerts, mostly from Citrix servers and workstations.
How is user and group membership reconnaissance used?
User and group membership reconnaissance are used by attackers to map the directory structure and target privileged accounts for later steps in their attack. The Security Account Manager Remote (SAM-R) protocol is one of the methods used to query the directory to perform this type of mapping.
Where are the SAMR queries coming from in azure?
The SAMR queries were only being seen on servers in Azure, so that was a bit of a clue. Using Message Analyzer and adding the Process Name column from Global Properties quickly found which process was performing that activity. The culprit was WaAppAgent.exe which is the Azure VM agent.