misp-training/events/20200923-BNLSec/content.tex

378 lines
13 KiB
TeX
Raw Normal View History

2021-01-28 08:23:56 +01:00
% DO NOT COMPILE THIS FILE DIRECTLY!
% This is included by the other .tex files.
\begin{frame}
\titlepage
\end{frame}
\begin{frame}
\frametitle{MISP and CIRCL}
\begin{center}
\includegraphics[scale=0.45]{pics/circl.png}
\hspace{2.5em}
\includegraphics[scale=0.35]{pics/misp.pdf}
\end{center}
\begin{itemize}
\item CIRCL is mandated by the Ministry of Economy and acting as the Luxembourg {\bf National CERT for the private sector}.
\item CIRCL runs multiple large MISP communities performing {\bf active daily threat-intelligenge sharing}
\item CIRCL leads the development of {\bf MISP and many other open source softwares}\footnote{AIL-Framework, D4-project, CVE-search, passive-(ssl/dns), lookyloo}.
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{The aim of this presentation}
\begin{itemize}
\item Brief introduction to MISP
\item Why is {\bf contextualisation} important?
\item What options do we have in MISP?
\item How can we {\bf leverage} this in the end?
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{What is MISP?}
\begin{itemize}
\item MISP is a {\bf threat information sharing} platform that is free \& open source software
\item A tool that {\bf collects} information from partners, your analysts, your tools, feeds
\item Normalises, {\bf correlates}, {\bf enriches} the data
\item Allows teams and communities to {\bf collaborate}
\item {\bf Feeds} automated protective tools and analyst tools with the output
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{MISP Features Highlights}
\begin{itemize}
\item Functionalities to assist users in {\bf creating, collaborating and sharing}
\begin{itemize}
\item A wide range of imports
\item Rest API
\item Automatic correlation
\item Proposals
\item Granular distribution levels and sharing groups
\item Advanced synchronisation mechanisms
\end{itemize}
\item A host of export formats
\begin{itemize}
\item {\bf IDSes / IPSes}: \texttt{Suricata, Bro/Zeek, Snort}
\item {\bf SIEMs}: \texttt{CEF, STIX}
\item {\bf Host scanners}: \texttt{OpenIOC, STIX, CSV, Yara}
\item {\bf Analysis tools}: \texttt{Maltego}
\item {\bf DNS policies}: \texttt{RPZ}
\end{itemize}
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Sharing Difficulties}
\begin{itemize}
\item Not really a technical issue, but often it's a matter of {\bf social interactions} (e.g. {\bf trust}).
\item Legal restriction\footnote{\url{https://www.misp-project.org/compliance/}}
\begin{itemize}
\item \textit{Our legal framework doesn't allow us to share information}
\item \textit{Risk of information-leak is too high and it's too risky for our organization or partners.}
\end{itemize}
\item Practical restriction
\begin{itemize}
\item \textit{We don't have information to share.}
\item \textit{We don't have time to process or contribute indicators.}
\item \textit{Our model of classification doesn't fit your model.}
\item \textit{Tools for sharing information are tied to a specific format, we use a different one.}
\end{itemize}
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{The growing need to contextualise data}
\begin{itemize}
\item Contextualisation became more and more important as communities matured
\begin{itemize}
\item Support {\bf Diversification} of communities
\item {\bf Distinguish} between information of interest and raw data
\item {\bf False-positive} management, data {\bf quality} and {\bf relevance}
\end{itemize}
\item Classification practices need to be shared among the communities to support efficient collaboration
\end{itemize}
\end{frame}
\section{contextualising data points}
\begin{frame}
\frametitle{Base level of contextualisation}
{\centering Differentiation between {\bf indicators} and {\bf supporting data}}
\begin{itemize}
\item An IP address by itself is barely ever interesting
\item Relevance of the data must be explicit
\item Bare minimum context required
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{More contextualisation}
\begin{itemize}
\item {\bf Who} can receive our data? {\bf What} can they do with it?
\item {\bf Data accuracy, source reliability}
\item {\bf Why} is this data relevant to us?
\end{itemize}
\vspace{1em}
But we can go further,
\pause
\begin{itemize}
\item {\bf Who} is behind it? What are their {\bf Motivations}? Who are the {\bf targets}
\item {\bf What tools} were used? What {\bf impacts} are we dealing with?
\item How can we {\bf block/detect/remediate} the attack?
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Tagging and taxonomies}
\begin{itemize}
\item Simple labels
\item {\bf Standardising} on vocabularies
\item Different community cultures require different nomenclatures
\item Libraries that can easily be extended
\end{itemize}
\vspace{1em}
\includegraphics[width=1.0\linewidth]{pics/taxonomy-workflow.png}
\end{frame}
\begin{frame}
\frametitle{Tagging and taxonomies - The missing part}
\begin{itemize}
\item Taxonomy tags are often {\bf self-explanatory}
\begin{itemize}
\item \texttt{tlp:green}
\item \texttt{workflow:state="complete"}
\item \texttt{priority-level:high}
\end{itemize}
\end{itemize}
\vspace{1em}
\begin{itemize}
\item For more complex classification this is ill-suited
\begin{itemize}
\item \texttt{APT 28}
\item \texttt{Locky}
\item \texttt{Mirai}
\item \texttt{Mitre's Att\&ck patterns} and co
\end{itemize}
\item Support of synonyms, metadata, preventive measures, ...
\end{itemize}
\begin{center}
$\rightarrow$ Something more complex is needed
\end{center}
\end{frame}
\begin{frame}
\frametitle{Enriched tags - MISP Galaxies}
\begin{itemize}
\item Community driven \textbf{knowledge-base libraries}
\item Including {\it descriptions}, {\it links}, {\it synonyms} and other {\it meta} information
\item Can be used as {\bf pivot} when performing searches
\end{itemize}
\begin{center}
\includegraphics[scale=0.34]{pics/galaxy}
\end{center}
\end{frame}
\begin{frame}
\frametitle{MISP Galaxies benefits}
\begin{itemize}
\item Standardising on high-level {\bf TTPs} solved a variety of issues
\item Tools producing {\bf ATT\&CK} data and {\bf kill-chain} phases in general
\item Integrates into our {\bf filtering} and {\bf situational awareness} needs extremely well
\item Gave rise to other, ATT\&CK-like systems tackling other concerns
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{More complex data-structures for a modern age}
\begin{itemize}
\item Atomic data points are often useful, but can be lacking in many aspects
\item {\bf MISP Objects}\footnote{\url{https://github.com/MISP/misp-objects}} system
\begin{itemize}
\item Simple: {\bf templating} approach to build more complex structures
\item Flexible: allows users to {\bf define their own}
\item {\bf Relational}: interlink data-points to tell a story
\item Examples: \texttt{Domain-IP}, \texttt{File}, \texttt{VT-Report}, \texttt{Person}
\end{itemize}
\end{itemize}
\begin{center}
\includegraphics[scale=0.25]{pics/domain-ip}
\end{center}
\end{frame}
\begin{frame}
\frametitle{Graphs are worth a thousands words}
\begin{itemize}
\item Relationships allow to easily describe process or event
\begin{itemize}
\item \texttt{Word file} drops an \texttt{Hancitor} malware, that will download a \texttt{Zeus-Panda} Banker that will later connect to \texttt{IP}
\end{itemize}
\end{itemize}
\vspace{1em}
\includegraphics[width=1.0\linewidth]{pics/eventgraph}
\end{frame}
\begin{frame}
\frametitle{False Positive Handling}
\begin{itemize}
\item Low quality data and false positives lead to {\bf alert fatigue}
\item False positives are often obvious, thus can be encoded
\begin{itemize}
\item {\bf Warninglists} of well-known indicators which are obvious false positives
\item RFC1918 networks, empty hashes, ...
\end{itemize}
\end{itemize}
\vspace{1em}
\begin{center}
\includegraphics[width=0.49\linewidth]{pics/warning-list.png}
\includegraphics[width=0.49\linewidth]{pics/warning-list-event.png}
\end{center}
\end{frame}
\begin{frame}
\frametitle{Continuous feedback loop}
\begin{itemize}
\item {\bf Vital component} for IoC lifecycle management
\item Involves the output of detection tools to prioritise IoCs
\item {\bf Sighting system}
\begin{itemize}
\item Community can sight indicators and convey the time of sighting or detection
\item Can be used as a {\bf continuous reporting} stream between detection tools and MISP
\end{itemize}
\end{itemize}
\begin{center}
\begin{tikzpicture}[shorten >=2pt,node distance=13em,semithick, auto]
\node[state] (MISP) {\includegraphics[scale=0.12]{pics/misp.pdf}};
\node[state] (IDS) [right=of MISP] {Tool};
\path[->]
(MISP) edge [bend left=20] node {Push relevant IoCS} (IDS)
(IDS) edge [bend left=20] node {Report Sightings} (MISP);
\end{tikzpicture}
\end{center}
\end{frame}
\begin{frame}
\frametitle{Adding temporality}
\begin{itemize}
\item {\bf First seen} and {\bf Last seen} on data points
\item Enables {\bf visualisation} and improves IoC lifecycle
\end{itemize}
\begin{center}
\includegraphics[width=1.0\linewidth]{pics/timeline-misp-overview.png}
\end{center}
\end{frame}
\section{Leveraging classifications}
\begin{frame}
\frametitle{Making use of all this context}
\begin{itemize}
\item Providing advanced ways of querying data
\begin{itemize}
\item Unified {\bf export APIs}
\begin{itemize}
\item \texttt{Suricata}, \texttt{Snort}, \texttt{STIX}, \texttt{Yara}, \texttt{Maltego}, ...
\end{itemize}
\item Incorporating all contextualisation options into {\bf API filters}
\item {\bf On-demand} filters for {\bf excluding} potential false positives and expired data
\item Rich set of modules to add {\bf expansions}, {\bf imports} and {\bf exports}
\end{itemize}
\end{itemize}
\end{frame}
\begin{frame}[fragile]
\frametitle{Example query}
\begin{lstlisting}
/attributes/restSearch
{
"returnFormat": "netfilter",
"enforceWarninglist": true,
"excludeDecayed": true,
"tags": {
"NOT": [
"tlp:white",
"type:OSINT"
],
"OR": [
"misp-galaxy:threat-actor=\"Sofacy\"",
"misp-galaxy:sector=\"Chemical\"",
]
},
"galaxy.cfr-suspected-victims": ["China", "Japan"],
}\end{lstlisting}
\end{frame}
\begin{frame}[fragile]
\frametitle{Example query to generate ATT\&CK heatmaps}
\texttt{/events/restSearch}
\begin{lstlisting}
{
"returnFormat": "attack",
"tags": [
"misp-galaxy:sector=\"Chemical\""
],
"timestamp": "365d"
}
\end{lstlisting}
\end{frame}
\begin{frame}
\frametitle{A sample result for the above query}
\begin{center}
\includegraphics[scale=0.2]{pics/attack-screenshot.png}
\end{center}
\end{frame}
\begin{frame}
\frametitle{Indicator lifecycle management}
\begin{itemize}
\item Built-in tool to {\bf filter out} IoCs marked as {\bf expired} by default and user-defined models
\item Overwhelmingly relies on proper classifications
\end{itemize}
\hspace{-1.5em}
\includegraphics[width=1.1\linewidth]{pics/decaying-simulation}
\end{frame}
\begin{frame}
\frametitle{To sum it all up...}
\begin{itemize}
\item Massive rise in {\bf user capabilities}
\item Growing need for truly {\bf actionable threat intel}
\item Lessons learned:
\begin{itemize}
\item {\bf Context is king} - Enables better decision making
\item {\bf Intelligence and situational awareness} are natural by-products of context
\end{itemize}
\end{itemize}
\end{frame}
\begin{frame}
\frametitle{Get in touch if you have any questions}
\begin{itemize}
\item Contact us
\begin{itemize}
\item \url{https://twitter.com/mokaddem_sami}
\item \url{https://twitter.com/iglocska}
\end{itemize}
\item Contact CIRCL
\begin{itemize}
\item info@circl.lu
\item \url{https://twitter.com/circl_lu}
\item \url{https://www.circl.lu/}
\end{itemize}
\item Contact MISPProject
\begin{itemize}
\item \url{https://github.com/MISP}
\item \url{https://gitter.im/MISP/MISP}
\item \url{https://twitter.com/MISPProject}
\end{itemize}
\end{itemize}
\end{frame}