Adversaries may create a cloud account to maintain access to victim systems. With a sufficient level of access, such accounts may be used to establish secondary credentialed access that does not require persistent remote access tools to be deployed on the system.
Adversaries may create accounts that only have access to specific cloud services, which can reduce the chance of detection.
Once an adversary has created a cloud account, they can then manipulate that account to ensure persistence and allow access to additional resources - for example, by adding Additional Cloud Credentials or assigning Additional Cloud Roles.
Use multi-factor authentication for user and privileged accounts.
Configure access controls and firewalls to limit access to critical systems and domain controllers. Most cloud environments support separate virtual private cloud (VPC) instances that enable further segmentation of cloud systems.
|Privileged Account Management
Limit the number of accounts with permissions to create other accounts. Do not allow privileged accounts to be used for day-to-day operations that may expose them to potential adversaries on unprivileged systems.
|User Account Creation
Monitor for newly constructed user accounts through the collection of usage logs from cloud user and administrator accounts to identify unusual activity in the creation of new accounts, such as accounts that do not follow specified naming conventions or accounts created by unapproved users or sources. Monitor for newly created admin accounts that go over a certain threshold of known admins.