host_type {} contains the middle column. Macros are prefixed with "MC-" to easily identify and look at manually. index="456446" | lookup 456446_lookup component_id as column_a outputnew value as comparison_field | table column_a, column_b, comparison_field | where column_b < comparison_field. your current search giving Date User list (data) | where isnull (mvfilter ('list (data)'>3)) | chart count (user) by date. HI All, How to pass regular expression to the variable to match command? Please help. For instance: This will retain all values that start with "abc-. eval txKV = mvfilter (match (kvPair, "tx_success")) | eval txCount = mvcount (txKV) | eval txTime = mvindex (txKV, txCount-1) |. Do I need to create a junk variable to do this?hello everyone. The use of printf ensures alphabetical and numerical order are the same. i have a mv field called "report", i want to search for values so they return me the result. Given the subject of this post about 'removing' an IP, then mvfilter is also another useful MV function, e. More than 1 year late, but a solution without any subsearch is : | makeresults | eval mymvfield ="a b c" | makemv mymvfield | evalHow to use mvfilter to get list of data that contain less and only less than the specific data?Solution. Solved: Hi Splunk community, I have this query source=main | transaction user_id | chart count as Attempts,Splexicon:Bloomfilter - Splunk Documentation. 32. index="nxs_mq" | table interstep _time | lookup params_vacations. your_search Type!=Success | the_rest_of_your_search. Select the file you uploaded, e. I've used the 'addinfo' command to get a min/max time from the time selector, and a striptime () command to evaluate the epoch time of each holiday's date, but when I use the mvfilter command to compare the epoch holiday time and the info_min_time. Hello All, I am trying to make it so that when a search string returns the "No Results Found" message, it actually displays a zero. In the example above, run the following: | eval {aName}=aValue. Turn on suggestions. Thanks. Hi, I would like to count the values of a multivalue field by value. COVID-19 Response SplunkBase Developers Documentation. There are at least 1000 data. Below is the query that I used to get the duration between two events Model and Response host=* sourcetype=** source="*/example. However, for events such as email logs, you can find multiple values in the “To” and “Cc” fields. I am trying to figure out when. The filldown command replaces null values with the last non-null value for a field or set of fields. Splunk Administration; Deployment Architecture. Also you might want to do NOT Type=Success instead. Building for the Splunk Platform. Any help is greatly appreciated. You should be able to do a normal wildcard lookup for exclusions and then filter on the looked up field. You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions. The second template returns URL related data. Filter values from a multivalue field. Now, I want to take the timestamp lets say, 15-5-2017, and iterate down the Time column, and match another row with the same timestamp. | gentimes start=1/1/17 end=10/1/18 increment=1d | rename starttime AS _time | stats sparkline (count, 2h) AS sparkline. 113] . What I want to do is to change the search query when the value is "All". Splunk, Splunk>, Turn Data Into Doing, Data-to-Everything, and D2E are trademarks or. don’t quote me, but I don’t think the REGEX data type in splunk can be replaced with a field value, hence the need to use a subsearch to pass an actual string there Note the value of search needs to be enclosed in " " , so you may need to do an eval before calling return to add the double quotes The mvfilter command LOOKS similar to what I want, but in reverse (the mv variables are the regexes, of which any match is a reason to exit the search). HttpException: HTTP 400 -- Unknown search command 'source' But the same code works with the below simple search command. A new field called sum_of_areas is created to store the sum of the areas of the two circles. M. In Splunk software, this is almost always UTF-8 encoding, which is a superset of ASCII. mvfilter(<predicate>) Description. 1 Karma. Use the mvcount, mvindex, and mvfilter eval functions to evaluate Topic 4 – Analymultivalue fieldsze Multivalue Data Use the mvsort, mvzip, mvjoin, mvmap, and mvappend eval functions and the mvexpand command to analyze multivalue data AboutSplunk Education Splunk classes are designed for specific roles such as Splunk count events in multivalue field. Short for “Security Information and Event Management”, a SIEM solution can strengthen your cybersecurity posture by. In the following Windows event log message field Account Name appears twice with different values. containers{} | spath input=spec. index = test | where location="USA" | stats earliest. Suppose I want to find all values in mv_B that are greater than A. Because the search command is implied at the beginning of a search string, all you need to specify is the field name and a list of values. The single value version of the field is a flat string that is separated by a space or by the delimiter that you specify with the delim argument. Mvfilter: Eg: mvfilter (eval (x!=userId))I'm not sure what the deal is with mvfind, but would this work?: search X | eval a=mvfilter(eventtype LIKE "network_%") | search a=* | COVID-19 Response SplunkBase Developers Documentation BrowseHi, I am building a dashboard where I have an multi-select input called locations, which is populated with a query via the dynamic options. This blog post is part 4 of 4 in a series on Splunk Assist. Neither of these appear to work for me: y=mvfilter(isnotnull(x)) y=mvfilter(!isnull(x)) While this does:COVID-19 Response SplunkBase Developers Documentation. ")) Hope this helps. COVID-19 Response SplunkBase Developers DocumentationSyntax: <predicate-expression>. トピック1 – 複数値フィールドの概要. Splunk Employee. Verify whether your detections are available as built-in templates in Microsoft Sentinel: If the built-in rules are sufficient, use built-in rule templates to create rules for your own workspace. This is my final splunk query. View solution in original post. And you will end up with: aName=Field1 aValue=123 Field1=123 aName=Field1 aValue=234 Field1=234 aName=Field2 aValue=345. Logging standards & labels for machine data/logs are inconsistent in mixed environments. It takes the index of the IP you want - you can use -1 for the last entry. This function filters a multivalue field based on an arbitrary Boolean expression. . If you found another solution that did work, please share. How to use mvfilter to get list of data that contain less and only less than the specific data?Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. The documentation states the following: mvfilter (X) This function filters a multivalue field based on an arbitrary Boolean expression X. Splunk Development. Neither of these appear to work for me: y=mvfilter (isnotnull (x)) y=mvfilter (!isnull (x)) While this does: y=mvfilter (x!="NULL")) Spread our blogUsage of Splunk EVAL Function : MVDEDUP Usage of Splunk EVAL Function : MVDEDUP This function takes single argument ( X ). The command generates events from the dataset specified in the search. Splunk Data Stream Processor. If you have 2 fields already in the data, omit this command. I tried using "| where 'list (data)' >1 | chart count (user) by date" , but it gives me. | eval mv_Results=mvfilter (mv_B > A) However, this does NOT work. 156. So the scenarios is like this - I have a search query which gets a web service response in which there is a tag "identifier" and this tags occurs multiple times in the same event with values like like P123456, D123465 etc. With your sample data, output is like. com is my is our internal email domain name, recipient field is the recipient of the email, either a single-valued field or a multi-valued field. field_A field_B 1. , 'query_1_z']}, [, match_missing= {True, False}]) Pass a. Filtering search results with mvfilter - (05-14-2019 02:53 PM) Getting Data In by CaninChristellC on 05-14-2019 02:53 PM Latest post on 05-15-2019 12:15 AM by knielsenHi, We have a lookup file with some ip addresses. Note that the example uses ^ and $ to perform a full. Mvfilter: Eg: mvfilter (eval (x!=userId))I'm not sure what the deal is with mvfind, but would this work?: search X | eval a=mvfilter(eventtype LIKE "network_%") | search a=* | COVID-19 Response SplunkBase Developers Documentation BrowseDoes Splunk support regex look behind and look ahead? Specifically, I have a log that has the following: CN=LastName, FirstName. . This is in regards to email querying. This is using mvfilter to remove fields that don't match a regex. i'm using splunk 4. The result of the values (*) function is a multi-value field, which doesn't work well with replace or most other commands and functions not designed for them. Splunk Platform Save as PDF Share You have fields in your data that contain some commonalities. For example, if you search for Location!="Calaveras Farms", events that do not have Calaveras Farms as the Location are. Forwarders have three file input processors:VFind™: The first ever UNIX anti-malware scanner, with a unique heterogeneous design that allows for complete protection, in today’s multi-platform networks. The classic method to do this is mvexpand together with spath. here is the search I am using. The problem I am facing is this search is working fine with small size events but when it comes to large events with more CLP counts. There is also could be one or multiple ip addresses. Then we could delete the original event, so that no unscrupulous users with access to our Splunk instance could harvest those plaintext passwords. I want specifically 2 charac. The single value version of the field is a flat string that is separated by a space or by the delimiter that you specify with the delim argument. Community; Community; Splunk Answers. | gentimes start=1/1/17 end=10/1/18 increment=1d | rename starttime AS _time | stats sparkline (count, 2h) AS sparkline. You must be logged into splunk. If you have a more general question about Splunk functionality or are experiencing a difficulty with Splunk, consider posting a question to Splunkbase Answers. Your command is not giving me output if field_A have more than 1 values like sr. Exception in thread "main" com. You must be logged into splunk. Thank you. | gentimes start=-1 | eval field1="pink,fluffy,unicorns" | table field1 | makemv field1 delim="," | eval field1_filtered=mvfilter (NOT match (field1,"pink") AND NOT match (field1,"fluffy")) Yes, you can use the "mvfilter" function of the "eval" command. This Splunk search is an example on how to remove unwanted values from multivalue fields using mvfilter. It's a bit hack-y, as it adds two multivalue fields to each event - the holiday name and date. Try below searches one by. This function will return NULL values of the field as well. . I came quite close to the final desired result by using a combination of eval, forearch and mvfilter. 34. - Ryan Kovar In our last post on parsing, we detailed how you can pass URL Toolbox a fully qualified domain name or URL and receive a nicely parsed set of fields that. It can possibly be done using Splunk 8 mvmap and I can think of a couple of other possibilities, but try this and see if it works for you. Or do it like this: | eval keep=mvfilter (mvnumeric>3) | where mvcount (mvnumeric)=mvcount (keep) This will remove any row which contains numbers ️ (in your data, the second row). I narrowed down the issue to an eval statement in the drilldown - |eval k=mvfilter(match(t, ",1$")) - to match a field that ends with ,1. Reply. Splunk and its executive officers and directors may be deemed to be participants in the solicitation of proxies from Splunk's stockholders with respect to the transaction. Dashboards & Visualizations. Try Splunk Enterprise free for 60 days as a hybrid or on-prem download. com in order to post comments. The sort command sorts all of the results by the specified fields. 66666 lift. Numbers are sorted before letters. Motivator 01-27. | eval f1split=split (f1, ""), f2split=split (f2, "") Make multi-value fields (called f1split and f2split) for each target field. When working with data in the Splunk platform, each event field typically has a single value. First, I would like to get the value of dnsinfo_hostname field. New to Splunk, need some guidance on how to approach the below: Need to find null values from multivalue field. . Usage. 1. Fast, ML-powered threat detection. This command changes the appearance of the results without changing the underlying value of the field. Usage of Splunk Eval Function: MATCH. . The mvfilter function works with only one field at a time. { [-] Average: 0. The Boolean expression can reference ONLY ONE field at a time. You can use this function with the eval, fieldformat, and where commands, and as part of eval expressions. For example: | makeresults | eval values_type=split ( "value1,value2,value1,value2,value1,value2,value1,value2,value2,value2,value2,",",") | eval values_count=mvcount (values_type) | eval value1=mvfilter (match. index="456446" | lookup 456446_lookup component_id as column_a outputnew value as comparison_field | table column_a, column_b, comparison_field | where column_b < comparison_field. I am trying to add a column to my current chart which has "Customers" as one column and "Users" as another. Splunk Cloud Platform. The fillnull command replaces null values in all fields with a zero by default. This is the most powerful feature of Splunk that other visualisation tools like Kibana, Tableau lacks. |eval k=mvfilter(match(t, ",1$$"))Hi Experts, Below is the JSON format input of my data, I want to fetch LoadBalancer name from metric_dimensions fields, but the position of Load balancer is differ in both field. It won't. However, I only want certain values to show. g. Do I need to create a junk variable to do this? hello everyone. Re: mvfilter before using mvexpand to reduce memory usage. We can also use REGEX expressions to extract values from fields. The expression can reference only one field. Find below the skeleton of the usage of the function “mvdedup” with EVAL :. g. In Splunk software, this is almost always UTF-8 encoding, which is a superset of ASCII. Here is a run-anywhere search that generates an "ALIVE" sparklkine (set TimePicker to All time 😞. My use case is as follows: I have sourcetype-A that returns known malicious indicators (through multi-valued fields) I have sourcetype-B that has DNS query logs from hosts I'd like to make a search where I compile a. Thanks in advance. BrowseEdit file knownips. splunk. Industry: Software. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. To monitor files and directories in Splunk Cloud Platform, you must use a universal or a heavy forwarder in nearly all cases. It could be in IPv4 or IPv6 format. There might be better ways to do it. mvfilter(<predicate>) Description. You can use fillnull and filldown to replace null values in your results. . Description: An expression that, when evaluated, returns either TRUE or FALSE. | eval filteredIpAddress=mvfilter (!match (ipAddress, "^10. Also, I include a static option called "ANY" with a value * I have also a token prefix and suffix of double quotes (") and the delimiter of a coma ( , )Suppose I want to find all values in mv_B that are greater than A. While on the component side, it does exactly as advertised and removes ALL from the multiselect component when something else is selected, Splunk itself does not appear to be honoring the update to the token. If you do not want the NULL values, use one of the following expressions: mvfilter(!isnull(<value>)) Usage of Splunk EVAL Function : MVFILTER . I want a single field which will have p. Functions of “match” are very similar to case or if functions but, “match” function deals. containers{} | spath input=spec. The mvfilter function works with only one field at. Splunk Enterprise Security: Issue found in "SA-IdentityManagement" : Identity - Asset CIDR Matches - Lookup Gen. Phantom) >> Enterprise Security >> Splunk Enterprise or Cloud for Security >> Observability >> Or Learn More in Our Blog >>This does not seem to be documented anywhere, but you can use the curly braces to create fields that are based on field values. In Microsoft Sentinel, go to the Configuration > Analytics > Rule templates tab, and create and update each relevant analytics rule. They network, attend special events and get lots of free swag. See the Data on Splunk Training. BrowseHi, I am building a dashboard where I have an multi-select input called locations, which is populated with a query via the dynamic options. The expression can reference only one field. The classic method to do this is mvexpand together with spath. We can use mvfilter() to test Per_User_failures, but there is no link to the user with those failures so we won't know who is responsible. Use the mvcount, mvindex, and mvfilter eval functions to evaluate multivalue fields Topic 4 – Analyze Multivalue Data Use the mvsort, mvzip, mvjoin, mvmap, and mvappend eval. com [email protected] and I am attempting to use this JavaScript code to remove ALL from my multiselect. Risk. I want to deal the multivalue field to get the counts whch is satisfied the conditions I set. Solution . id stages 1 key1,100 key2,200 key3,300 2 key1,50 key2,150 key3,250 3 key1,150 key2,250 key3,350 Given this data I want the result, that is I want to reduce (average) over the keys. Data is populated using stats and list () command. | eval New_Field=mvfilter(X) Example 1: See full list on docs. This machine data can come from web applications, sensors, devices or any data created by user. BrowseThe Splunk Threat Research Team (STRT) continuously monitors the threat landscape to develop, test, and deliver custom detection searches to help identify vulnerabilities and cyber attacks within your environment. Use the mvfilter () function to filter a multivalue field using an arbitrary Boolean expression. Hello All, i need a help in creating report. with. com in order to post comments. can COVID-19 Response SplunkBase Developers Documentation Browse In splunk docs I read that mvfilter in combination with isnotnull or !isnull functions can be used when you want to return only values that are not NULL from a multivalue field. 94, 90. Once you have the eventtypes defined, use eval with mvfilter to get rid of any extraneous eventtypes, and then create your table: eventtype="webapp-error-*" | eval errorType = mvfilter (eventtype LIKE "webapp-error-%") | stats count by sourcetype, errorType. ")) Hope this helps. If my search is *exception NOT DefaultException then it works fine. That's why I use the mvfilter and mvdedup commands below. For example: You want to create a third field that combines the common. Splunk Data Fabric Search. Partners Accelerate value with our powerful partner ecosystem. View solution in. Just ensure your field is multivalue then use mvfilter. Stream, collect and index any type of data safely and securely. | eval foo=mvfilter (match (status,"success")) | eval bar=mvfilter (match (status,"failed")) | streamstats window=1 current=t count (foo) as success_count,count (bar) as failed_count | table. Here is a run-anywhere search that generates an "ALIVE" sparklkine (set TimePicker to All time 😞. Hi, In excel you can custom filter the cells using a wild card with a question mark. . An absolute time range uses specific dates and times, for example, from 12 A. 0 KarmaAuto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. I am analyzing the mail tracking log for Exchange. Here's what I am trying to achieve. mvexpand breaks the memory usage there so I need some other way to accumulate the results. It could be in IPv4 or IPv6 format. 02-05-2015 05:47 PM. I want to use the case statement to achieve the following conditional judgments. 2. . • This function returns a subset field of a multi-value field as per given start index and end index. I think this is just one approach. You can use mvfilter to remove those values you do not. Reply. 156. David. Hi, I have a created a table with columns A and B, we are using KV store to get the threshold config. If this reply helps you, Karma would be appreciated. This function is useful for checking for whether or not a field contains a value. Splunk, Splunk>, Turn Data Into. This function will return NULL values of the field x as well. url in table, then hyperlinks isn't going to magically work in eval. e. The first change condition is working fine but the second one I have where I setting a token with a different value is not. com UBS lol@ubs. I am trying to format multi-value cell data in a dashboard table using mvmap in an eval token before passing it on to a drilldown, however I am unable to figure out how to format the eval function and if this approach would work at all. You may be able to speed up your search with msearch by including the metric_name in the filter. You need read access to the file or directory to monitor it. Splunk Administration; Deployment Architecture1. This function filters a multivalue field based on a Boolean Expression X . I've added the mvfilter version to my answer. Ingest-time eval provides much of the same functionality. The ordering within the mv doesn't matter to me, just that there aren't duplicates. Reply. It could be in IPv4 or IPv6 format. AD_Name_C AD_Name_C AD_Name_B AD_Name_B AD_Name_A AD_Name_A 2. 54415287320261. Using the trasaction command I can correlate the events based on the Flow ID. The following list contains the functions that you can use to compare values or specify conditional statements. 01-13-2022 05:00 AM. 04-03-2018 03:58 AM. Three things need to happen relating to "All" - if the selection is empty, put the default "All" in the form token; if "All" is added after another value, make the form token hold just "All"; and, if another value is added after "All", keep all values which aren't "All". Solution. When people RDP into a server, the results I am getting into splunk is Account_Name=Sever1$ Account_Name =. This Splunk search is an example on how to remove unwanted values from multivalue fields using mvfilter. I have a filed called names as shown below, if i search with first line of strings then search returning the complete filed event but not second and third line of filed strings. containers{} | mvexpand spec. Regards, VinodSolution. Then, the user count answer should be "3". . don’t quote me, but I don’t think the REGEX data type in splunk can be replaced with a field value, hence the need to use a subsearch to pass an actual string there Note the value of search needs to be enclosed in " " , so you may need to do an eval before calling return to add the double quotes Hi all, i want to hide / delete / exclude some keyword like " supersaiyan" , "leave" from the below event using mvfilter. . . I have limited Action to 2 values, allowed and denied. In Splunk, it is possible to filter/process on the results of first splunk query and then further filter/process results to get desired output. , knownips. The third column lists the values for each calculation. Explorer. With a few values I do not care if exist or not. * meaning anything followed by [^$] meaning anything that is not a $ symbol then $ as an anchor meaning that must be the end of the field value. Splunk search - How to loop on multi values field. 05-18-2010 12:57 PM. Hi, As the title says. i tried with "IN function" , but it is returning me any values inside the function. The reason for that is that Type!=Success implies that the field "Type" exists, but is not equal to "Success". containers {} | mvexpand spec. Community; Community; Splunk Answers. Paste the following search verbatim into your Splunk search bar and you'll get a result set of 8 rows, where the 7th row turns out to be an "alpha" that we want to filter out. Usage. Splunk, Splunk>, Turn Data Into Doing, Data-to-Everything, and D2E. So, if the first search is already run, the most straight-forward solution would be a subsearch using the first CSV file. When you untable these results, there will be three columns in the output: The first column lists the category IDs. In Bro DNS logs, query and response information is combined into a single event, so there is not Bro. I hope you all enjoy. . For example, the duration as days between the "estimated delivered date" and the "actual delivered date" of a shipping package: If the actual date is "2018-04-13 00:00:00" and the estimated one is "2018-04-15 00:00:00", the result will be . BrowseRe: mvfilter before using mvexpand to reduce memory usage. Something like values () but limited to one event at a time. BrowseEvaluating content of a list of JSON key/value pairs in search. If the field is called hyperlinks{}. | gentimes start=-1 | eval field1="pink,fluffy,unicorns" | table field1 | makemv field1 delim="," | eval field1_filtered=mvfilter (NOT match (field1,"pink") AND NOT match (field1,"fluffy"))Yes, you can use the "mvfilter" function of the "eval" command. I need the ability to dedup a multi-value field on a per event basis. value". Basic examples. My answer will assume following. Let say I want to count user who have list (data) that contains number bigger than "1". If X is a multi-value field, it returns the count of all values within the field. containers{} | where privileged == "true" With your sample da. It takes the index of the IP you want - you can use -1 for the last entry. . In the example above, run the following: | eval {aName}=aValue. You can try this: | rest /services/authentication/users |rename title as User, roles as Role |stats count by User Role |fields - count| appendcols [ |rest /services/authorization/roles |table title srchIndexesAllowed|rename title as Role]|stats values (Role) as Role values (srchIndexesAllowed) as Indexes by User. a. Alerting. . 0 Karma. David. Click Local event log collection. index=test "vendorInformation. userPr. In the following Windows event log message field Account Name appears twice with different values. This function takes maximum two ( X,Y) arguments. See this run anywhere example. Diversity, Equity & Inclusion Learn how we. . Reply. . 201. This function filters a multivalue field based on an arbitrary Boolean expression. . Maybe I will post this as a separate question cause this is perhaps simpler to explain. . . April 13, 2022. Find below the skeleton of the usage of the function “mvfilter” with EVAL :. So I found this solution instead. Dashboards & Visualizations. When I did the search to get dnsinfo_hostname=etsiunjour. How about sourcetype=wordcount | dedup string | rex field=string max_match=10000 "(?<abc>abc)" | eval abc=mvcount(abc) | table abc - this does the count of abc in the string (since abc does not contain itself, it is an easy calculation). Use the mvfilter () function to filter a multivalue field using an arbitrary Boolean expression. Expanding on @richgalloway's answer, you can do this: index=ndx sourcetype=srctp mvfield="foo" | where mvindex (mvfield,0)="foo". csv. csv interstep OUTPUT 0900,1000,1100,1200,1300,1400,1500,1600,1700 |Hi, I have a log file that generates about 14 fields I am interested in, and of those fields, I need to look at a couple of fields and correlate on them, but still return the results of all. g. using null or "" instead of 0 seems to exclude the need for the last mvfilter. Something like that:Great solution. Return a string value based on the value of a field. This example uses the pi and pow functions to calculate the area of two circles. If you have 2 fields already in the data, omit this command. All VFind Security ToolKit products feature a Cryptographic Integrity Tool (CIT), Universal Atomic Disintegrator (UAD) and MVFilter. Also, I include a static option called "ANY" with a value * I have also a token prefix and suffix of double quotes (") and the delimiter of a coma ( , )HI All, How to pass regular expression to the variable to match command? Please help. Hello, I am trying to format multi-value cell data in a dashboard table using mvmap in an eval token before passing it on to a drilldown, however I am unable to figure out how to format the eval function and if this approach would work at all. This function takes one argument <value> and returns TRUE if <value> is not NULL. to be particular i need those values in mv field. The third column lists the values for each calculation. , 'query_z'] , 'property_name_1' : ['query_1','query_1_a',. index=indexer action= Null NOT [ | inputlookup excluded_ips | fields IP | format ] The format command will change the list of IPs into ( (IP=10. Please try to keep this discussion focused on the content covered in this documentation topic. you could use a subsearch like: | makeresults | eval mymvfield ="a b c" | makemv mymvfield | eval excludes = mvfilter (NOT in (mymvfield, [| makeresults | eval. The field "names" must have "bob". mvzipコマンドとmvexpand. g. We help security teams around the globe strengthen operations by providing. For example, if I want to filter following data I will write AB??-. mvzipコマンドとmvexpand. conf, if the event matches the host, source, or source type that. If you ignore multivalue fields in your data, you may end up with missing. I am thinking maybe: | stats values (field1) AS field_multivalue by field2 | mvfilter. We could even take action against the event in Splunk by copying it, redacting the password in the src_user field, and placing it in a summary index for further investigation. Neither of these appear to work for me: y=mvfilter (isnotnull (x)) y=mvfilter (!isnull (x)) While this does: y=mvfilter (x!="NULL"))don’t quote me, but I don’t think the REGEX data type in splunk can be replaced with a field value, hence the need to use a subsearch to pass an actual string there Note the value of search needs to be enclosed in " " , so you may need to do an eval before calling return to add the double quotesSolution. The following list contains the functions that you can use to compare values or specify conditional statements. In Microsoft Sentinel, go to the Configuration > Analytics > Rule templates tab, and create and update each relevant analytics rule. Let's call the lookup excluded_ips.