Adversaries may attempt to hide artifacts associated with their behaviors to evade detection. Operating systems may have features to hide various artifacts, such as important system files and administrative task execution, to avoid disrupting user work environments and prevent users from changing files or features on the system. Adversaries may abuse these features to hide artifacts such as files, directories, user accounts, or other system activity to evade detection.
Adversaries may also attempt to hide artifacts associated with malicious behavior by creating computing regions that are isolated from common security instrumentation, such as through the use of virtualization technology.
This type of attack technique cannot be easily mitigated with preventive controls since it is based on the abuse of system features.
Monitor files, processes, and command-line arguments for actions indicative of hidden artifacts. Monitor event and authentication logs for records of hidden artifacts being used. Monitor the file system and shell commands for hidden attribute usage.