![]() It is not ready yet but I’ll inform you as soon as there is something to show. I hope you enjoyed the article and found it inspiring even if you don’t use Splunk or the other mentioned tools.īesides: I am working on a RESTful web service with the working title “TRON” that allows to query for threat intel indicators and supports different comparison modes including including the missing “contains” supporting OpenIOC and STIX as input files. Splunk modular input plugin to fetch the enterprise audit. ![]() I’ll improve the Threat Intel Receivers in the coming weeks and add the “–siem” option to the MISP Receiver as well. The new add-on supports both GitHub Enterprise Cloud and Server, proxy, and is 100 Splunk supported. This is no problem in case of the C2 server definitions but for the filename definitions, which can be e.g. The only small downer is that Lookups can only be used for “equal” matches and don’t allow to search for elements that “contain” certain fields of the CSV file. The two other files create by the threat intel receiver contain information on filenames and C2 server (hostnames, IPs) that can be applied in a similar way. (avoid realtime searches/alerts in Splunk)įurthermore the threat intel receiver should be scheduled via cron in order to run hourly/daily. I would define this search as an “Alert” that runs every 15 minutes and searches in log data of the last 15 minutes in order to get immediately informed if a blacklisted executable had been used. This weekend I added a new option called “–siem” that instructs the receiver to generate a CSV file with header line and the correct format for a lookup definition in Splunk. One of them fetches all IOC (indicator of compromise) elements from AlienVault’s Open Threat Exchange platform OTX and saves them to a subfolder in the LOKI program folder in order to be initialized during startup. I recently integrated two different threat intel receivers in my free IOC scanner LOKI. Splunk Enterprise supports the following browsers: Firefox (latest) Safari (latest) Chrome (latest) Microsoft Edge: Chromium (latest) Recommended hardware To evaluate Splunk Enterprise for a production deployment, use hardware that is typical of your production environment. In this article I would like to describe a method to apply threat intel information to log data in Splunk using simple lookup definitions. ![]() Therefore one of the main tasks of security monitoring today is to combine these different data sources, which means to apply the threat intel information to the data that is already available in SIEM systems or scan for it on-demand using tools like my free IOC scanner LOKI or our APT Scanner THOR. ![]() Screenshots from Version 1.2.0 HuntExes.ps1 is run, it imports csv files from. On the other hand they receive threat information from different sources like APT reports, public or private feeds or derive those indicators from their own investigations and during incident response. Possibly changed due to a Windows update. On the one hand they collect log data from different sources and try to correlate them in a useful way in so-called SIEM systems. This function computes and returns the secure hash of a string value, based on the FIPS compliant SHA-256 (SHA-2 family) hash function. Today most security teams have access to a lot of different information sources. ![]()
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