CrowdStrike CCFR-201b - CrowdStrike Certified Falcon Responder

The correct RTR command is xmemdump. In Falcon Real Time Response, memory acquisition commands must be selected carefully because different commands collect different types of diagnostic or memory data. CSWINDIAG is associated with collecting diagnostic information and troubleshooting data, not directly dumping kernel memory. memdump is generally associated with process memory collection rather than the Windows kernel-memory task described in the question. dumpmem is not the best native RTR command for this scenario. Since the lead analyst specifically asks for kernel memory from a Windows system, xmemdump is the appropriate command. This matters operationally because using the wrong RTR command can waste response time and fail to collect the artifact required for deeper forensic analysis.

Domain name-based IOCs in Falcon are used for detection-oriented visibility, not endpoint prevention in the same way as file-hash indicators. File hashes can support blocking or allowing because the sensor can evaluate executable content directly. Domains are network indicators, so the practical actions available are limited to detection or no enforcement action. “Detect only” creates visibility when matching activity is observed, while “No action” allows the indicator to be stored or staged without triggering enforcement behavior. Options that include “Block” or “Allow” are incorrect because domain-based IOCs do not work like hash allowlists or prevention hashes in Falcon IOC Management. This distinction is important for responders because choosing the wrong IOC type or expected action can lead to false assumptions about containment capability.

A DnsRequest event records the process that originated the DNS activity in ContextProcessId, while aid identifies the Falcon sensor installation, and therefore the host, that produced the event. A Process Timeline needs both the host identity and the process identity. Using ContextProcessId with aid lets Falcon retrieve the other cloudable events associated with that responsible process during the chosen period. ParentProcessId identifies the parent rather than the process that made the request. RequestType describes the DNS record type, such as A or AAAA, and cannot identify a process. ResponsibleProcessId is not the required field in this event. Therefore, ContextProcessId and aid are the correct pair for pivoting from the DnsRequest event to the originating process’s timeline.

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