The ContextProcessld_readable field in a DNS Request event points to the responsible process. The ContextProcessld_readable field is the readable representation of the process identifier for the process that initiated the DNS request. It can be used to identify which process was communicating with a specific domain or IP address. The TargetProcessld_decimal, ContextProcessld_decimal, and ParentProcessId_decimal fields do not point to the responsible process.

To view Files Written to Removable Media within a specified timeframe on a host within the Host Search page, you need to expand and refer to the Suspicious File Activity dashboard panel. The Suspicious File Activity dashboard panel shows information such as files written to removable media, files written to system directories by non-system processes, files written to startup folders, etc. The other dashboard panels do not show files written to removable media.

The strftime eval function is used to convert Unix times (Epoch) into UTC readable time. It takes two arguments: a Unix time field and a format string that specifies how to display the time. The now, typeof, and relative_time eval functions are not used to convert Unix times into UTC readable time.

This query will return the parent processes responsible for launching badprogram.exe by using a subsearch to find the processrollup2 events where FileName is badprogram.exe, then renaming the TargetProcessld_decimal field to ParentProcessld_decimal and using it as a filter for the main search, then using stats to count the occurrences of each FileName by _time. The other queries will either not return the parent processes or use incorrect field names or syntax.

This is the proper method to quantify search results, enabling a hunter to quickly sort and identify outliers. The stats command is used to calculate summary statistics on the results of a search or subsearch, such as count, sum, average, etc. The count by option is used to count the number of events for each distinct value of a field or fields and display them in a table. This can help find rare or common values that could indicate anomalies or deviations from normal behavior.