CCFR-201 Sample Questions Answers

According to the [MITRE ATT&CK website], MITRE ATT&CK 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. Defense Evasion is one of the tactics defined by MITRE ATT&CK, which covers actions that adversaries take to avoid detection or prevent security controls from blocking their activities. Eternal Blue, Emotet, and Phishing are examples of techniques, not tactics.

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.

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.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the ParentProcessld_decimal field contains the decimal value of the process ID of the parent process that spawned or injected into the target process1. This field can be used to trace the process lineage and identify malicious or suspicious activities1.

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.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Process Timeline tool allows you to view all cloudable events associated with a given process, such as process creation, network connections, file writes, registry modifications, etc1. The tool requires two parameters: aid (agent ID) and TargetProcessId_decimal (the decimal value of the process ID)1. You can jump to a Process Timeline from many views, such as Hash Search, Host Timeline, Event Search, etc., by clicking on either the Process ID or Parent Process ID fields in those views1. This will automatically populate the aid and TargetProcessId_decimal parameters for the Process Timeline tool1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, there are three ways to export process event data from a detection in .CSV format1:

• You can use the Process Timeline tool and click on “Export CSV” button at the top right corner1.
• You can use the Event Search tool and select one or more events and click on “Export CSV” button at the top right corner1.
• You can use the Full Detection Details tool and choose the “View Process Activity” option from any process node in the process tree view1. This will show you all events generated bythat process in a rows-and-columns style view1. You can then click on “Export CSV” button at the top right corner1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Host Search allows you to search for hosts based on various criteria, such as hostname, IP address, OS, etc1. The results are displayed in an organized view by type, such as detections, incidents, processes, network connections, etc1. The Host Timeline allows you to view all events recorded by the sensor for a given host in a chronological order1. The events include process executions, file writes, registry modifications, network connections, user logins, etc1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Process Timeline tool allows you to view all cloudable events associated with a given process, such as process creation, network connections, file writes, registry modifications, etc1. You can specify a timeframe to limit the events to a certain period1. The tool works for any host platform, not just Mac or Linux1.

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 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.

According to the [MITRE ATT&CK website], MITRE ATT&CK 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 ATT&CK information, which describes how adversaries can obtain credentials from operating system memory or disk storage by using tools such as Mimikatz or ProcDump.

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 organization1. This action also removes the file from the quarantine list and deletes it from the CrowdStrike Cloud1.

According to the CrowdStrike Falcon Devices Add-on for Splunk Installation and Configuration Guide v3.1.5+, the Host Timeline tool allows you to view all events recorded by the sensor for a given host in a chronological order1. The events include process executions, file writes, registry modifications, network connections, user logins, etc1. You can use various filters to narrow down the events based on criteria such as event type, timestamp range, file name, registry key, network destination, etc1. However, there is no filter for severity, user name, or detection ID, as these are not attributes of the events1.

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.