About biers04

biers04 · ‎07-10-2024

There at one point was an add-in that was created for sending Splunk logs to MS Sentinel, but appears it was depreciated some time ago. I am in need of incorporating customer data that uses Splunk to my SOC Sentinel environment. Are there any built in functions that can be utilized to forward to Sentinel? The forwarding option in Splunk appears to only work to other Splunk instances. All current add-ins appear to be focused on ingest from Sentinel to Splunk. I have been researching a variety of options, but none seem to fill the void that I can find at this time, outside of creating and maintaining my own Splunk add-in.

biers04 · ‎04-16-2021

I am working on statsing firewall data into a sparkline. However, when I run the search, the sparkline caps out at 1800 results. This ends up being an issue because some sparklines end up just looking like a flat line, which is not very useful. Is there a way to work around this/a fix to this? | tstats count from datamodel=firewall where firewall.signature!="(9999)" by firewall.signature, _time, span=1ms | stats sparkline sum(count) by log.threat_name Sparkline limit @ 1800

biers04 · ‎09-02-2020

BLUF: is there a good way to search for double TLD's? I have been attempting to get at a way to hunt for double TLD's in a firewall index, and I am looking at how to improve on some basic searching. Basically, if you search tools like phishtank, you will see a lot of phishing domains like to spoof legitimate sites with something along the lines of "mybank.com.thisisabadguy.com" so you think you're navigating to "mybank.com." I've done very simplistic searches to see how things work, searching things like `index=firewall .com*.com | dedup url` just to see what results i get. Lots of false positives, what with Google Ad redirects, bing search results, etc. I can work with FP's though, I'll create a whitelist csv for that. Is there a way to get Splunk to recognize double TLD's, so instead of having to individually search .com*com, .org*.org, .ru*.ru, etc I can search where .tld*.tld?

biers04 · ‎03-13-2018

Sorry all, completely forgot about it. Still an issue, but I don't have time to deal with it at this point. If I can delete the question, I will.

biers04 · ‎12-22-2017

Trying to extract all email attachments file names. I am no good with Rex/Regex, so I used the automatic extraction in Splunk... However, the extraction is only pulling the first file name, never anything after. In Splunk on the Extraction/Transfor, field I got (?=[^"](?:"filename":|"."filename":))^[^/\n]*/\w+",\s+"\w+":\s+"(?P[^"]+) Need to know what to add in order for it to loop through for each attachment.

biers04 · ‎12-08-2017

So I will give you credit, you set me on the right path here. It did not quite work for me, but | join [rest /services/authentication/current-context splunk_server=local | fields + username] ended up working.

biers04 · ‎12-08-2017

I created a search for pushing clean MD5 hashes to a CSV in order to filter out said MD5's. For non-repudiation purposes, I am attempting to send the current users name into the CSV as well. To make it easier, the base search is below: index=mcafee Customer=Yes AND signature!="[New*" AND ("ad.Executable_,Fingerprint"!="submit_hash_clean.csv" AND "file_name"!="submit_hash_clean.csv") $wild$ | dedup "Workstation_,Name" | eval TIME=strftime(time,"%Y-%m-%d %H:%M") | stats earliest(TIME) count by "Executable,Fingerprint" | eventstats sum(count) as total_host | where count<11 | rename "Executable_,Fingerprint" AS "File Hash", earliest(TIME) AS "First Seen", count AS Count | table "File Hash", Count, "Set As Clean" "Username" |eval "Set As Clean"="Clean" | eval "Username"="$env:user_realname$" | sort -Count Then a search macro runs, pushing the MD5 to the CSV along with the file name (Command below). The issue I am having here is that the token $env:user_realname$ does not appear to be valid in the search macro. Username returns the literal string "$env:user_realname$" instead of the actual user name. If not in quotes, Username returns blank. I am not sure what I am missing. | dedup "Executable_,Fingerprint" | head 1 | table "file_name", "Executable_,Fingerprint", "Username" | eval "Username"="$env:user_realname$" | outputlookup append="true" submit_hash_clean.csv

biers04 · ‎12-07-2017

Actually, it appears that within the CSV, it returns just the literal string "$env:user_realname$" My drilldown query is as follows: | dedup "Executable_,Fingerprint" | head 1 | fillnull value="NULL" | search NOT NULL | table "file_name", "Executable_,Fingerprint", "Username" | eval "Username"="$env:user_realname$" | outputlookup append="true" submit_hash_clean.csv

biers04 · ‎12-07-2017

Brilliant! Thank you, was missing eval username="$env:user_realname$" within the search macro.

biers04 · ‎12-07-2017

row panel html h1 id="User">$env:user_realname$ Did not realize it would not display toe row panel html h1 tag - reinserted here without the <>

biers04 · ‎12-07-2017

FYI to display usernames themselves it is $env:user_realname$ (don't need the h1 tag). I just need a possible way to grab the h1 and push that to the csv as well.

biers04 · ‎12-07-2017

I am currently creating a dashboard for users. index=mcafee AND Customer=Yes AND signature!="[New*" AND ("Executable_,Fingerprint"!="submit_hash_clean.csv" AND "file_name"!="submit_hash_clean.csv") | dedup "Workstation_,Name" | eval TIME=strftime(time,"%Y-%m-%d %H:%M") | stats earliest(TIME) count by "file_name", Executable,Fingerprint | eventstats sum(count) AS total_host | where count<11 | rename file_name AS "File Name", earliest(TIME) AS "First Seen", count AS Count | table "File Name", "Executable_,Fingerprint", Count, "Set As Clean" | eval "Set As Clean"="Clean" | sort - Count When a user Clicks "Clean" it auto runs a query that pushes the file hash and filename to a CSV so we no longer see the file name associated with that file hash. My problem comes in as I need non-repudiation. I am looking to push the current users name into the CSV, but I cannot figure out how to do so push the current user to a table. If I can get it to a table, I'll know how to push their name into the CSV. Current command I am attempting to use is "$env:user_realname$" as it grabs the users name instead of login name. I'm not sure if making it a token or there is something I am missing here.

biers04 · ‎12-05-2017

Basically, I want to filter out 50 alerts for first_customer, a completely different set of rules to filter for second_customer, and so on, up to about 25-30 customers. I think it would be much better to do this through one CSV lookup, just unsure how to specify to meet my needs.

biers04 · ‎12-05-2017

There are a lot of customers and rules... Was looking not to have to specifically rule it out, but if that is the only way, I will deal with the cards I've been dealt.

biers04 · ‎12-04-2017

Created a lookup table for Common File locations. I am going to filter these out of results using the lookup table, however there are a few customers we have where certain files are not authorized (despite of real world clean), so I would need to show results for these customers. Basically, if C:\Program Files (x86)\Mozilla Firefox\Firefox, filtering this out with the lookup table... However, if customer=exampleCustomer, then the result should still display. Is this possible using lookup tables, or do I need to specifically search customer without the lookup.

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Member Since	‎12-04-2017

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Date Last Visited	‎07-12-2024 04:26 PM

Forward Splunk to MS Sentinel

Tstats with Sparkline limiting values

Phishing Domain Hunting with double TLDs

Extract multiple file names from email attachments

Pass token into search macro

Ingesting User Names

If statement with lookup table

Forward Splunk to MS Sentinel

Tstats with Sparkline limiting values

Phishing Domain Hunting with double TLDs

Re: Extract multiple file names from email attachm...

Extract multiple file names from email attachments

Re: Pass token into search macro

Pass token into search macro

Re: Ingesting User Names

Re: Ingesting User Names

Re: Ingesting User Names

Re: Ingesting User Names

Ingesting User Names

Re: If statement with lookup table

Re: If statement with lookup table

If statement with lookup table

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