Practice Free CCFR-201 CrowdStrike Certified Falcon Responder Exam Questions Answers With Explanation

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, global prevalence is a field that indicates how frequently the hash of a file is seen across all CrowdStrike customer environments1. A global prevalence of common means that the file is widely distributed and likely benign1. However, if you do not know what the executable is, you may want to investigate it further to confirm its legitimacy and functionality1. One way to do that is to click the VT Hash button from the detection, which will pivot you to VirusTotal, a service that analyzes files and URLs for viruses, malware, and other threats1. You can then see more information about the file, such as its name, size, type, signatures, detections, comments, etc1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Hash Search tool allows you to search for one or more SHA256 hashes and view a summary of information from Falcon events that contain those hashes1. The summary includes the hostname, sensor ID, OS, country, city, ISP, ASN, geolocation, process name, command line, and organizational unit of the host that loaded or executed those hashes1. You can also see a count of detections and incidents related to those hashes1. The primary purpose for running a Hash Search is to review information surrounding a hash’s related activity, such as which hosts and processes were involved, where they were located, and whether they triggered any alerts1.

According to the CrowdStrike Falcon® Data Replicator (FDR) Add-on for Splunk Guide, the Detections page allows you to view and manage detections generated by the CrowdStrike Falcon platform2. You can use various filters to narrow down the detections based on criteria such asstatus, severity, tactic, technique, etc2. To view ‘in-progress’ detections assigned to Falcon Analyst Alex, you can filter on ‘Status: In-Progress’ and 'Assigned-to: Alex*'2. The asterisk (*) is a wildcard that matches any characters after Alex2.

According to the CrowdStrike Falcon® Data Replicator (FDR) Add-on for Splunk Guide, IOA exclusions allow you to exclude files or directories from being detected or blocked by CrowdStrike’s indicators of attack (IOAs), which are behavioral rules that identify malicious activities2. This can reduce false positives and improve performance2. IOA exclusions only apply to IOA based detections, not other types of detections such as machine learning, custom IOA, or OverWatch2.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the process tree view provides a visualization of program ancestry, which shows the parent-child and sibling relationships among the processes1. You can also see the event types and timestamps for each process1. The processes on the same plane are ordered by time started in descending order, meaning that the most recent process is at the bottom and the oldest process is at the top1. For example, in the image you sent me, CMD.EXE is the oldest process and VMTOOLSD.EXE is the most recent process on that plane1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Hash Execution Search tool allows you to search for one or more SHA256 hashes and view a summary of information from Falcon events that contain those hashes1. The summary includes the hostname, sensor ID, OS, country, city, ISP, ASN, and geolocation of the host that loaded or executed those hashes1. You can also see a count of detections and incidents related to those hashes1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Process Activity View allows you to view all events generated by a process involved in a detection in a rows-and-columns style view1. This can be helpful because it creates a consolidated view of all detection events for that process that can be exported for further analysis1. You can also sort, filter, and pivot on the events by various fields, such as event type, timestamp, file name, registry key, network destination, etc1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, Reduced Functionality Mode (RFM) is a state where a host’s sensor has limited functionality due to various reasons, such as license expiration, network issues, tampering attempts, etc1. You can find hosts that are in RFM by using the Host Search tool and filtering by Sensor Status = RFM1. You can also view details about why a host is in RFM by clicking on its hostname1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Process Timeline search returns all cloudable events associated with a given process, such as process creation, network connections, file writes, registry modifications, etc1. This allows you to see a comprehensive view of what a process was doing on a host1.

According to the CrowdStrike Falcon® Data Replicator (FDR) Add-on for Splunk Guide, the Full Detection Details tool allows you to view detailed information about a detection, such as detection ID, severity, tactic, technique, description, etc1. You can also view the events generated by the processes involved in the detection in different ways, such as process tree, process timeline, or process activity1. The process tree view provides a graphical representation of the process hierarchy and activity1. You can see children and sibling processes information by expanding or collapsing nodes in the tree1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Full Detection Details tool allows you to view detailed information about a detection, such as detection ID, severity, tactic, technique, description, etc1. You can also view the events generated by the processes involved in the detection in different ways, such as process tree, process timeline, or process activity1. The process activity view provides a rows-and-columns style view of the events, such as DNS requests, registry operations, network operations, etc1. You can also export this view to a CSV file for further analysis1.

According to the [CrowdStrike website], the MITRE-Based Falcon Detections Framework is a way of categorizing and describing detections based on the MITRE ATT&CK knowledge base ofadversary behaviors and techniques. The framework uses three levels of granularity: category, tactic, and technique. The category is the highest level and represents the main objective of an adversary, such as initial access, execution, credential access, etc. The tactic is the second level and represents the sub-objective of an adversary within a category, such as persistence, privilege escalation, defense evasion, etc. The technique is the lowest level and represents the specific way an adversary can achieve a tactic, such as create account, modify registry, obfuscated files or information, etc. Therefore, the correct way to interpret Keep Access > Persistence > Create Account is that an adversary is trying to keep access through persistence by creating an account.

According to the CrowdStrike Falcon® Data Replicator (FDR) Add-on for Splunk Guide, when you release a file from quarantine, you are restoring it to its original location and allowing it to execute on any host in your organization2. This action also removes the file from the quarantine list and deletes it from the CrowdStrike Cloud2.