5V0-93.22 Exam Dumps : VMware Carbon Black Cloud Endpoint Standard Skills

The impact of using the wildcards in the path is that all executable files in the “Program Files” folder and subfolders will be ignored, including malware files. This is because the double asterisk ** matches any files or directories in that path, and the Bypass action means that the sensor will notmonitor or block any operations performed by those files. This is a very permissive and risky rule, as it could allow malicious files to run without interference from the sensor. A more restrictive and secure rule would be to specify the exact path of the application that needs to be allowed, and use the Allow and Log action instead of Bypass. This way, the sensor will only ignore the specified application, and still log its operations for visibility and analysis. References: Carbon Black Cloud: How to Use Wildcards in Policy Rules, Set Permission Policy Rules

A leading wildcard is a wildcard that is placed at the beginning of a search term, such as * or ?. A leading wildcard matches any characters that precede the specified term. For example, filemod:/system32/ntdll.dll matches any file modification events that end with /system32/ntdll.dll, regardless of the drive letter or the directory name. A leading wildcard is not recommended unless absolutely necessary because it carries a significant performance penalty for the search. This is because the search engine has to scan the entire index for possible matches, rather than using the index to quickly narrow down the results1.

The other options are not examples of leading wildcards. A. filemod:system32/ntdll.dll is an exact match query that matches only file modification events that are exactly system32/ntdll.dll. B. filemod:system32/ntdll.dll is a trailing wildcard query that matches any file modification events that start with system32/ and end with ntdll.dll, regardless of the characters in between. D. filemod:system32/ntdll.dll is a trailing wildcard query that matches any file modification events that start with system32/ntdll.dll, regardless of the characters that follow. References:

• Search Syntax - VMware Docs, Wildcards section.

The reputation that was used by the sensor for the decision to terminate the process was the effective reputation. The effective reputation is the reputation that the sensor uses to evaluate and enforce policy rules on the endpoint. The effective reputation is determined by the following factors:

• The initial cloud reputation, which is the reputation that the Carbon Black Cloud assigns to the file based on its analysis and threat intelligence feeds.
• The actioned reputation, which is the reputation that the administrator assigns to the file through the Carbon Black Cloud console, such as approve, ban, or dismiss.
• The current cloud reputation, which is the reputation that the Carbon Black Cloud updates for the file based on new information or changes in the threat landscape.

The effective reputation is the highest priority reputation among these three factors. For example, if the initial cloud reputation is SUSPECT_MALWARE, the actioned reputation is APPROVED, and the current cloud reputation is KNOWN_MALWARE, the effective reputation will be APPROVED, because it has the highest priority. The sensor will use the effective reputation to apply the policy rules on the endpoint. In this case, the process will not be blocked by the rule [Suspected malware] [Invokes a command interpreter] [Terminate process], because the effective reputation is not SUSPECT_MALWARE.

In the question scenario, the effective reputation for the process was SUSPECT_MALWARE, which means that either the initial cloud reputation, the actioned reputation, or the current cloud reputation was SUSPECT_MALWARE, and there was no higher priority reputation that overrode it. Therefore, the sensor used the effective reputation to enforce the policy rule and terminate the process. References:

• Endpoint Standard: How to Confirm Applied … - VMware Carbon Black, Resolution section.