Cortex 101: Dissecting Observables a Hundred Ways

TheHive Project’s Code Chefs are glad to announce that, thanks to the precious contributions of the user community, Cortex has broken the one hundred analyzer mark.

Cortex-Analyzers version 1.14.0 is out and includes new analyzers, some improvements and some bug fixes.

New Analyzers

New and enhanced analyzers, described below, are:

  • Cisco Investigate by Cisco Umbrella Research @opendns
  • Proofpoint Forensics Lookup by Emmanuel Torquato
  • Proofpoint Threat Insight Forensics Analyzer by Emmanuel Torquato
  • RecordedFuture by jojoob
  • urlscan.io search by ninoseki
  • Google DNS over HTTP by 0xswitch
  • RTF files support in FileInfo by Nils Kuhnert
  • Datascan and Inetnum flavors in Onyphe analyzer by Pierre Baudry and Adrien Barchapt

Again, huge thanks for the awesome work that has been performed by all our contributors!

Investigate

Cisco Umbrella Investigate provides threat intelligence about domains and IP addresses accross the Internet. The analyzer can be used to query the Cisco Umbrella (formerly OpenDNS) API and get information about an IP or a domain name. An API key is required to use this analyzer.

Results are displayed in TheHive in the following manner:

sc-investigate-short

sc-investigate-long
Cisco Investigate: short and long reports

Proofpoint Forensics Lookup

According to Proofpoint’s website, the Forensics API allows insight in detailed forensic evidences about individual threats or compaigns. The analyzer can be used to check observables against given indicators of compromise stored in the ProofPoint service.

Unfortunately, there are currently no sample report screenshots available, because TheHive’s Core Team does not have access to Proofpoint services. Also, due to the same reason, this analyzer could not be tested by us. If you have access to the service and can test the analyzer and/or provide report screenshots, please let us know.

RecordedFuture

This analyzer lets you get the latest risk data from RecordedFuture for a hash, domain or an IP address. It can be used to query the API and get information. An API key is required to use this analyzer.

Results are displayed in TheHive in the following manner:

sc-recordedfuture-short

sc-recordedfuture-long
RecordedFuture: short and long reports

Urlscan.io search

Urlscan.io is a service that scans and analyzes websites. Submitted pages will be browsed like a regular user would do and every activity gets recorded. The analyzer submitted by ninoseki queries urlscan without initiating a scan which would be publicly visible on the website. Accepted datatypes for this analyzer are URL, domain, hash and IP.

The templates which display the results of the analyzer look like the following screenshots:

Screenshot from 2018-10-25 09-55-34

Screenshot from 2018-10-25 09-48-58
Urlscan.io: short and long reports

Google DNS over HTTP

This analyzer provides DNS information for an IP, a domain or a FQDN by making calls to Google DNS-over-HTTP (DoH). No API key is required.

Results are displayed in TheHive in the following manner:sc-googleDNS-short

sc-googleDNS-long
Google DNS: short and long reports

RTF files support in FileInfo

The FileInfo meta analyzer has been improved and now leverages the rtfobj tool provided in the Oletools suite by Decalage.

Results are displayed in TheHive in the following manner:

sc-fileinfo_RTF-short

sc-rtfobj-long
FileInfo with rtfobj: short and long reports

Datascan and Inetnum flavors in Onyphe analyzer

The Onyphe analyzer has been enhanced with two new flavors. Datascan provides information about known open ports on a specific IP, and Inetnum enumerates all known network information about the analyzed IP address.

An API key is required to use the analyzer and can be obtained by creating an account on the Onyphe website.

Results are displayed in TheHive in the following manner:

sc-onyphe-inetnum-short

sc-onyphe_inetnum-long
Onyphe  Inetnum: short and long reports

sc-onyphe_datascan-short

sc-onyphe_datascan-long
Onyphe Datascan: long and short reports

Bug fixes and enhancements

  • #248: Improve error msg when VT Get Report does not have an entry for
  • #323: Fix an issue with HybridAnalysis analyzer filenames handler
  • #329: Enhance PassiveTotal Passive DNS report
  • #348: Fix a typo in URLhaus’s long.html
  • #356 : Force the use of Python3 in MISP analyzer
  • #362: Fix file not found issue and empty result set in CERT.at passive DNS analyzer

Get It While Supply Lasts!

Each analyzer comes with its own, pip compatible requirements.txt file. To update your Cortex analyzers to 1.14.0, run the following commands:

cd path/to/Cortex-Analyzers
git pull
for I in analyzers/*/requirements.txt; do sudo -H pip2 install -U -r $I || true; done && \
for I in analyzers/*/requirements.txt; do sudo -H pip3 install -U -r $I || true; done

Once done, do not forget to login to Cortex as an orgadmin and click on the Refresh Analyzers button. Refer to the online Cortex documentation for further details.

Update TheHive Report Templates

If you are using TheHive, get the latest version of  the report templates and import them into TheHive.

Running Into Trouble?

Shall you encounter any difficulty, please join our  user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We will be more than happy to help!

TheHive 3.1.2 & Cortex 2.1.2 Released

We could not leave for the week-end without issuing a minor release or two so here we go.

TheHive 3.1.2

Starting from TheHive 3.0.1, an administrator has the ability to configure Cortex job polling by defining the time between two polls thanks to the cortex.refreshDelay parameter as well as the number of consecutive failures before giving up (via cortex.MaxRetryOnError). However, these settings prevent the service from starting correctly. TheHive 3.1.2 corrects this issue.

Cortex 2.1.2

When running a job in Cortex with the exact same details, the function findSimilarJob is called. It should return results from any previous jobs, but in the latest versions (2.1.0, 2.1.1) it does not because of a change that went past our QA.

In a similar fashion, the GUI search function was broken. Cortex 2.1.2 fixes both issues.

Excuse my French but I Need Help

Keep calm. We speak French. So if you encounter any difficulty to update TheHive or Cortex, please join our  user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We are always ready to help as does our user community.

TheHive4py 1.5.1 Released

When you need to interact with TheHive’s REST API and you ain’t shy of working with Python, TheHive4py is the way to go. It’s a free, open source library we provide to allow you to easily create alert feeders, automate certain tasks like creating cases, assign them to analysts and much more. For example, Synapse, DigitalShadows2TH and Zerofox2TH leverage the library to send alerts to your favourite SIRP/SOAR.

Sometime ago, we decided that it was time to overhaul the whole library and we began working on version 2.0.0 which will be easier to use. It should also support the full set of TheHive’s REST API calls. In the meantime we decided to release version 1.5.0, shortly followed by version 1.5.1 to support some new functionality contributed by our user community and correct a few issues.

code_quality
Source : XKCD

New Features Introduced in 1.5.0

Bugfixes Introduced in 1.5.0

  • #80: Prevent max recursion depth exceeded error, contributed by Psynbiotik

New Features Introduced in 1.5.1

Important note: TheHive4py 1.5.1 does not work with TheHive 3.0.10 or earlier versions. Please stick with 1.5.0 if you are using those versions.

Updating/Installing

To update your existing package:

$ sudo pip install thehive4py --upgrade

If you are just getting started with TheHive4py, you can forgo the --upgrade at the end of the command above.

But I just Wanna Play!

If you’d like to play around with TheHive4py 1.5.1, TheHive 3.1.1., Cortex4py 2.0.1 and Cortex 2.1.1, please download the training VM.

Paris? Are you There?

Shall you encounter any difficulty, please join our  user forum, contact us on Gitter, or send us an email at support@thehive-project.org. As usual, we’ll be more than happy to help!

Correction: October 12, 2018
As reported by Robin Hahling, TheHive 1.5.1 does not work with TheHive 3.0.10 or earlier versions.

Hold your breath and git pull

Cortex-Analyzer 1.13.0 is out and includes new analyzers, some improvements and few bug fixes :

  • Hunter.io has been contributed by Rémi Allain (@remiallain)
  • DShield lookup contributed by Xavier Martens (@xme)
  • Pulsedive contributed by Nils Kuhnert (@3c7, TheHive Project)
  • FileInfo has been enhanced with Manalyze submodule for PE analysis ; by @lctrcl and Nils Kuhnert (@3c7)
  • Thanks to @silrumpa, the Fortiguard_URLCategory analyzer has been updated and let you configure categories and customize theirs maliciousness level
  • PhishingInitiative analyzer has been flavoured with a scan facility, thanks to Rémi Pointel

Huge thanks for the awesome work that has been performed by all our contributors!

Hunterio_DomainSearch

Hunter.io is a search engine that lets you find emails associated with a given domain name. The analyzer can be used to query the API and get a list of email addresses for a specific domain name. An API key is required to use this analyzer and can be obtained by registering on the website.

Results are displayed in TheHive in the following manner:

sc-hunterio-short

sc-hunterio-long
Hunterio_DomainSearch: short and long report samples

DShield_lookup

The analyzer lets you query the famous SANS Internet Storm Center (ISC) DShield API and look up IP address reputation. No API key is needed to run this analyzer.

Results are displayed in TheHive in the following manner:

sc-dshield-short
sc-dshield-long
DShield_lookup: short and long report templates

Pulsedive_GetIndicator

Pulsedive is a Threat Intelligence platform that allows you to enrich your observables. The analyzer can be used to query  the API and get information about a domain name,  hash, IP or URL. An API key is required to use this analyzer and can be acquired by creating an account on the webiste.

Results are displayed in TheHive in the following manner:

sc-pulsedive-short

sc-pulsedive-long
Pulsedive_GetIndicator: short and long report templates

Manalyze joins FileInfo

Manalyze is a tool developed by Ivan Kwiatkowski (@JusticeRage) that lets you analyze, operate PE (Portable Executable) and collect useful artifacts that help the analyst in determining its maliciousness.

@lctrcl wrote an analyzer that triggers Manalyze on a PE file and gives the analyst a useful report. Nils Kuhnert (@3c7) from TheHive Project then included this analyzer as a submodule into our FileInfo meta-analyzer for files ; it can run Manalyze from compiled binary, or, if your Cortex server is ready for that, through the right docker. If you decide to use the compiled binary, please follow instruction from Manalyze github page.

This submodule is disabled by default. To use it, you have to set some configuration in Cortex:

sc-fileinfo-config
FileInfo: configuration for Manalyze in Cortex

Results are displayed in TheHive in the following manner:

sc-fileinfo-short3

sc-fileinfo-long3
Manalyze submodule: short and long report templates

Fortiguard_URLCategory

This analyzer has been enhanced to let analysts choose categories considered as malicious or suspicious. It comes with a default configuration but you can setup your own by selecting the categories from the Fortiguard website.

sc-fortiguard-config
Fortiguard_URLCategory: default configuration for categories  in Cortex

Select which categories you want to be considered malicious or suspicious, and others will be considered by the analyzer as info. Analyzed observables that are not categorised by Fortigard service is considered as safe.

PhishingInitiative_Scan

PhishingInitiative has been enhanced with a new scan flavor. This let the analyst submit an URL to the webservice. An API key is needed to run this analyzer and can be obtained by registering on the website.

Results are displayed in TheHive in the following manner:

sc-phishinginitiative-short

sc-phishinginitiative-long
PhishingInitiative_Scan: short and long report samples

Bug fixes

  • #335 : fix a bug in MISP analyzer
  • #340 : fix short report template in C1fApp
  • #339 : fix short and mini reports for Domaintools Whois history flavor

Get It While Supply Lasts!

Each analyzer comes with its own, pip compatible requirements.txt file. To update your Cortex analyzers to 1.13.0, run the following commands:

cd path/to/Cortex-Analyzers
git pull
for I in analyzers//requirements.txt; do sudo -H pip2 install -r $I; done && \
for I in analyzers/
/requirements.txt; do sudo -H pip3 install -r $I || true; done

Once done, do not forget to login to Cortex as an orgadmin and click on the Refresh Analyzers button. Refer to the online Cortex documentation for further details.

Update TheHive Report Templates

If you are using TheHive, get the latest version of  the report templates and import them into TheHive.

Running Into Trouble?

Shall you encounter any difficulty, please join our  user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We will be more than happy to help!

Correction: September 25, 2018
The link to the report templates was incorrect.

Cerana 0.9 and Cortex 2.0.4 are Out!

We are proud to announce the immediate availability of Cerana 0.9 (TheHive 3.0.9) and Cortex 2.0.4. These hotfix releases address a number of issues and we encourage you to update your current installation at your earliest opportunity. For your comfort and sanity. Seriously.

We also took this opportunity to update Cortex analyzers to fix issues with CIRCL Passive SSL, Hybrid Analysis, and the Joe Sandbox URL Analysis template. Moreover, we have updated the cortexutils library to set the taxonomy level to info if it is invalid. To upgrade cortexutils​ to 1.2.4:

sudo pip install -U cortexutils && sudo pip3 install -U cortexutils

To update your Cortex analyzers:

cd /path/to/Cortex-analyzers && git pull

Note: the Bluecoat analyzer was removed since it does not comply with the updated Terms of Service of Symantec Web Pulse SiteReview. Symantec does no longer permit programmatic querying of the service.

Fixes in Cerana 0.9

  • #527: display long reports when the analyst clicks on the corresponding short reports. Meh!
  • #541: make the drop-down menu for case templates scroll when there is a truckload of them.
  • #452: prevent WSAPI failure.
  • #531: fix naming inconsistencies in the Live Stream.
  • #530: correct an error when trying to analyze a filename using the Hybrid Analysis analyzer.
  • #543: generate an error if unable to contact Cortex.
  • #518: merge observable sightings when merging cases.
  • #535: fix the tag color of the PhishTank analyzer which was transparent under certain conditions.

Fixes in Cortex 2.0.4

  • #89: let a read,analyze user change or display their API key.
  • #91: sort analyzers by name.
  • #92: redirect users to the index page when they click on the Cortex logo.
  • #93: under the Organization > Configurations page, the UI displays wrong green checkmarks for empty configurations.
  • #94: orgadmin users are not able to update their organization’s users after the users are created. The UI doesn’t display any error message.
  • #95: avoid ‘lax programming’, Nabil style😜, and strictly filter the list of analyzers in the Run dialog.
  • #90: fix Python dependency errors in docker.

Support

Something does not work as expected? You have troubles installing or upgrading? Spotted new bugs? No worries, please open issues on GitHub or comment on existing ones, join our user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We are here to help.

CorrectionApril 14, 2018
An earlier version of this post did not mention that the Bluecoat analyzer was removed in the latest Cortex Analyzers repository release.

Cortex 2.0.3 Released and Analyzer Updates

There’s a new version of your ultimate observable analysis engine in town : Cortex 2.0.3 is out!

Cortex 2.0.3 contains a few important enhancements over its predecessor and fixes a number bugs as described in the full changelog summarised below. So get it while it’s still hot out of the digital oven and let us know how tasty it is.

analyzeallthethings
Source : Quickmeme.com

Implemented Enhancements

  • #81: reflect proxy changes in the global configuration at the analyzer level
  • #82: display invalid analyzers and let orgadmins delete them
  • #85: allow orgadmins to override the default global report cache.job period per analyzer through the Web UI
  • #86: allow a job to run with arbitrary parameters

Fixed Bugs

  • #75: a version upgrade of an analyzer makes all analyzers invisible in TheHive
  • #80: fix the analyzer configuration dialog to allow orgadmins to override the auto artifact extraction at the analyzer level
  • #83: hit Nabil on the head pretty hard until the analyzer refresh UI button works (well now it does so you can stop hitting poor Nabil’s head).

Analyzer Updates

We took the opportunity of a new release to make a few updates to the public analyzers. Cortex-Analyzers 1.9.3 contains the following changes:

  • Remove the Bluecoat analyzer to comply with the new ‘no scrapping’ ToS imposed by Symantec
  • Fix the default configuration of the Cymon Check IP analyzer
  • Fix the View all VT long template
  • Make the MISP Warning Lists Analyzer ignore case sensitivity when searching for hashes
  • Restrict the Abuse Finder and FileInfo analyzer dependencies to Python 2.7

You can read the full changelog if you like but if you want to enjoy the goods right away, git pull is your friend.

Support

Something does not work as expected? You have troubles installing or upgrading? Spotted new bugs? No worries, please open issues on GitHub or comment on existing ones, join our user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We are here to help.

 

Cortex 2, TheHive and a Whole Slew of Updates

After announcing Cortex 2.0.0 and TheHive 3.0.7, the first version of your favorite SIRP that is (supposedly) compatible with the brand-new version of Cortex, last week, we thought it was time to relax and enjoy the upcoming, long Easter weekend, the sunny sky of Paris (if you can pierce the veil of the Forever Grey Cloud™ that is hanging over the city of lights), and great jazz music. Heck, I even tweeted about it … only to be proven wrong by Life (and Murphy).

We literally field tested Cortex 2 for 3 weeks, we squashed bugs here and there, until almost the very last minute before the release. And yet, our QA needs to be improved by leaps and bounds as we had to release Cortex 2.0.1 one day after unveiling 2.0.0 to correct some additional bugs. And then some members of the core team and of our growing user community took it for a spin. And all hell broke lose. Well, almost 🙂

good_code
Source: XKCD

Session collisions (when TheHive and Cortex 2 are used on the same machine), analyzer malfunctions, connectivity problems … issues that were not identified during the testing phase, even in a production environment, where everything worked as expected. And we call this ‘Computer Science’. Right, right…

So we worked hard, took out our Code Hammer (it’s like Thor’s but cyber) and blasted away all the bugs that we found out or that were reported to us (arigato gozaimasu!) and we are happy to announce the immediate availability of Cortex 2.0.2, TheHive 3.0.8, Cortexutils 1.2.3 and Cortex-Analyzers 1.9.2.

TL;DR Install or upgrade Cortex 2.0.2, update Cortexutils, git pull the Cortex-analyzers repo to get the latest version of the repository, upgrade to TheHive 3.0.8, follow the Quick Start Guide and have a drink.

If you have time (which is admittedly quite scarce nowadays), please read on the changelogs:

What’s Next?

As stated in the previous post, we will release a new version of Cortex4py in order to make it compatible with Cortex 2, continue the work we started with our MISP Project friends to support MISP attribute enrichment through Cortex 2 (MISP currently only supports enrichment using Cortex 1), and perform a long-overdue overhaul of our documentation. We will also release a brand new version of TheHive4py.

Last but not least, we’ll take a hard look at ourselves and our QA. You expect us from us high quality and we hold ourselves to high standards. And we will deliver.

Support

Something does not work as expected? You have troubles installing or upgrading? Spotted new bugs? No worries, please open issues on GitHub or comment on existing ones, join our user forum, contact us on Gitter, or send us an email at support@thehive-project.org. We are here to help.