CCFR-201 Online Practice Questions and Answers

Correct Answer: D

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Process Timeline search requires two parameters: aid (agent ID) and TargetProcessId_decimal (the decimal value of the process ID). These fields can be obtained from the ProcessRollup2 event, which contains information about processes that have executed on a host1.

Correct Answer: C

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, a DNSRequest event contains information about a DNS query made by a process2. The event has several fields, such as DomainName, QueryType, QueryResponseCode, etc2. The field that links a DNSRequest event to its responsible process is ContextProcessId_decimal, which contains the decimal value of the process ID of the process that generated the event2. You can use this field to trace the process lineage and identify malicious or suspicious activities2.

Correct Answer: A

According to the [CrowdStrike website], the MITRE-Based Falcon Detections Framework is a way of categorizing and describing detections based on the MITRE ATTandCK 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.

Correct Answer: C

According to the CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide, quarantined files are never deleted from the host unless you manually delete them or release them from quarantine2. 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.

Correct Answer: C

According to the CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide, Sensor Visibility Exclusions allow you to exclude certain files or directories from being monitored by the CrowdStrike sensor, which can reduce noise and improve performance2. This means that no events will be collected or sent to the CrowdStrike Cloud for those files or directories2.

Correct Answer: B

According to the [CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+], event types are categories of events that are generated by the sensor for various activities, such as process executions, file writes, registry modifications, network connections, etc. There are many valid event types, such as StartOfProcess, ProcessRollup2, DnsRequest, etc. However, EndOfProcess is not a valid event type, as there is no such event that records the end of a process.

Correct Answer: B

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, pivoting to an Event Search from a detection takes you to the raw Insight event data and provides you with a number of Event Actions1. Insight events are low-level events that are generated by the sensor for various activities, such as process executions, file writes, registry modifications, network connections, etc1. You can view these events in a table format and use various filters and fields to narrow down the results1. You can also select one or more events and perform various actions, such as show a process timeline, show a host timeline, show associated event data, show a +/- 10- minute window of events, etc1. These actions can help you investigate and analyze events more efficiently and effectively1.

Correct Answer: C

According to the CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide, the Falcon platform will show a maximum of 1000 detections per day for a single AID1. This is a limitimposed by the Falcon API, which is used to retrieve the detections from the CrowdStrike Cloud1. If there are more than 1000 detections per day for a single AID, only the first 1000 will be shown1.

Correct Answer: A

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Bulk Domain Search tool allows you to search for one or more domains and view a summary of information from Falcon events that contain those domains2. The summary includes the hostname, sensor ID, OS, country, city, ISP, ASN, geolocation, process name, command line, and organizational unit of the host that performed a lookup of any of the domains in your search2. This can help you identify potential threats or vulnerabilities in your network2.

Correct Answer: A

According to the CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide, you can use the Hosts page in the Investigate tool to view information about your endpoints, such as hostname, IP address, OS, sensor version, etc2. You can also see a list of managed and unmanaged neighbors for each endpoint, which are other devices that have communicated with that endpoint over the network2. This can help you identify potential threats or vulnerabilities in your network2.

Correct Answer: B

According to the CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide, when you quarantine a file from a host using IOC Management or Real Time Response (RTR), you are moving it from its original location to a secure location on the host where it cannot be executed2. The file is also encrypted and renamed with a random string of characters2. On Windows hosts, quarantined files are stored in C:\Windows\System32\Drivers\CrowdStrike\Quarantine folder2.

Correct Answer: D

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-andcolumns 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.

Correct Answer: B

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 activities1. This can reduce false positives and improve performance1. When you configure and apply an IOA exclusion, the impact is that the associated detection will be suppressed and theassociated process would have been allowed to run1. This means that you will not see any alerts or events related to that IOA in the console1.

Correct Answer: D

According to the [MITRE ATTandCK website], MITRE ATTandCK is a knowledge base of adversary behaviors and techniques based on real-world observations. The knowledge base is organized into tactics and techniques, where tactics are the high-level goals of an adversary, such as initial access, persistence, lateral movement, etc., and techniques are the specific ways an adversary can achieve those goals, such as phishing, credential dumping, remote file copy, etc. Credential Access via OS Credential Dumping is an example of a tactic and technique combination sourced from MITRE ATTandCK information, which describes how adversaries can obtain credentials from operating system memory or disk storage by using tools such as Mimikatz or ProcDump.

Correct Answer: B

According to the [CrowdStrike Falcon?Data Replicator (FDR) Add-on for Splunk Guide], when you open the full detection details from a detection alert or dashboard item, you are taken to a page where you can view detailed information about the detection, such as detection ID, severity, tactic, technique, description, etc. 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 activity. The process tree view is also known as the process explorer, which provides a graphical representation of the process hierarchy and activity. You can view the processes and process relationships by expanding or collapsing nodes in the tree. You can also see the event types and timestamps for each process.