{ "cells": [ { "cell_type": "code", "execution_count": 1, "metadata": { "collapsed": true, "nbsphinx": "hidden" }, "outputs": [], "source": [ "# Delete this cell to re-enable tracebacks\n", "import sys\n", "ipython = get_ipython()\n", "\n", "def hide_traceback(exc_tuple=None, filename=None, tb_offset=None,\n", " exception_only=False, running_compiled_code=False):\n", " etype, value, tb = sys.exc_info()\n", " return ipython._showtraceback(etype, value, ipython.InteractiveTB.get_exception_only(etype, value))\n", "\n", "ipython.showtraceback = hide_traceback" ] }, { "cell_type": "code", "execution_count": 2, "metadata": { "collapsed": true, "nbsphinx": "hidden" }, "outputs": [], "source": [ "# JSON output syntax highlighting\n", "from __future__ import print_function\n", "from pygments import highlight\n", "from pygments.lexers import JsonLexer\n", "from pygments.formatters import HtmlFormatter\n", "from IPython.display import HTML\n", "\n", "original_print = print\n", "\n", "def json_print(inpt):\n", " string = str(inpt)\n", " if string[0] == '{':\n", " formatter = HtmlFormatter()\n", " return HTML('{}'.format(\n", " formatter.get_style_defs('.highlight'),\n", " highlight(string, JsonLexer(), formatter)))\n", " else:\n", " original_print(inpt)\n", "\n", "print = json_print" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "## Data Markings" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "### Creating Objects With Data Markings\n", "\n", "To create an object with a (predefined) TLP marking to an object, just provide it as a keyword argument to the constructor. The TLP markings can easily be imported from python-stix2." ] }, { "cell_type": "code", "execution_count": 3, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--409a0b15-1108-4251-8aee-a08995976561",\n",
       "    "created": "2017-10-04T14:42:54.685Z",\n",
       "    "modified": "2017-10-04T14:42:54.685Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:42:54.685184Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 3, "metadata": {}, "output_type": "execute_result" } ], "source": [ "from stix2 import Indicator, TLP_AMBER\n", "\n", "indicator = Indicator(labels=[\"malicious-activity\"],\n", " pattern=\"[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']\",\n", " object_marking_refs=TLP_AMBER)\n", "print(indicator)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "If you’re creating your own marking (for example, a ``Statement`` marking), first create the statement marking:" ] }, { "cell_type": "code", "execution_count": 4, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "marking-definition",\n",
       "    "id": "marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53",\n",
       "    "created": "2017-10-04T14:43:04.090873Z",\n",
       "    "definition_type": "statement",\n",
       "    "definition": {\n",
       "        "statement": "Copyright 2017, Example Corp"\n",
       "    }\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 4, "metadata": {}, "output_type": "execute_result" } ], "source": [ "from stix2 import MarkingDefinition, StatementMarking\n", "\n", "marking_definition = MarkingDefinition( \n", " definition_type=\"statement\", \n", " definition=StatementMarking(statement=\"Copyright 2017, Example Corp\")\n", ")\n", "print(marking_definition)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Then you can add it to an object as it’s being created (passing either full object or the the ID as a keyword argument, like with relationships)." ] }, { "cell_type": "code", "execution_count": 5, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--526cda4e-6745-4cd6-852f-0750c6a79784",\n",
       "    "created": "2017-10-04T14:43:09.586Z",\n",
       "    "modified": "2017-10-04T14:43:09.586Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:43:09.586133Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 5, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator2 = Indicator(labels=[\"malicious-activity\"],\n", " pattern=\"[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']\",\n", " object_marking_refs=marking_definition)\n", "print(indicator2)" ] }, { "cell_type": "code", "execution_count": 6, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--1505b789-fcd2-48ee-bea9-3b20627a4abd",\n",
       "    "created": "2017-10-04T14:43:20.049Z",\n",
       "    "modified": "2017-10-04T14:43:20.049Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:43:20.049166Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 6, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator3 = Indicator(labels=[\"malicious-activity\"],\n", " pattern=\"[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']\",\n", " object_marking_refs=\"marking-definition--f88d31f6-486f-44da-b317-01333bde0b82\")\n", "print(indicator3)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Granular markings work in the same way, except you also need to provide a full granular-marking object (including the selector)." ] }, { "cell_type": "code", "execution_count": 7, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "malware",\n",
       "    "id": "malware--9f8970eb-b398-41b6-b8c8-8a607ad3a2c5",\n",
       "    "created": "2017-10-04T14:43:26.129Z",\n",
       "    "modified": "2017-10-04T14:43:26.129Z",\n",
       "    "name": "Poison Ivy",\n",
       "    "description": "A ransomware related to ...",\n",
       "    "labels": [\n",
       "        "remote-access-trojan"\n",
       "    ],\n",
       "    "granular_markings": [\n",
       "        {\n",
       "            "marking_ref": "marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53",\n",
       "            "selectors": [\n",
       "                "description"\n",
       "            ]\n",
       "        },\n",
       "        {\n",
       "            "marking_ref": "marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9",\n",
       "            "selectors": [\n",
       "                "name"\n",
       "            ]\n",
       "        }\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 7, "metadata": {}, "output_type": "execute_result" } ], "source": [ "from stix2 import Malware, TLP_WHITE\n", "\n", "malware = Malware(name=\"Poison Ivy\",\n", " labels=['remote-access-trojan'],\n", " description=\"A ransomware related to ...\",\n", " granular_markings=[\n", " {\n", " \"selectors\": [\"description\"],\n", " \"marking_ref\": marking_definition\n", " },\n", " {\n", " \"selectors\": [\"name\"],\n", " \"marking_ref\": TLP_WHITE\n", " }\n", " ])\n", "print(malware)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Make sure that the selector is a field that exists and is populated on the object, otherwise this will cause an error:" ] }, { "cell_type": "code", "execution_count": 8, "metadata": {}, "outputs": [ { "ename": "InvalidSelectorError", "evalue": "Selector title in Malware is not valid!", "output_type": "error", "traceback": [ "\u001b[0;31mInvalidSelectorError\u001b[0m\u001b[0;31m:\u001b[0m Selector title in Malware is not valid!\n" ] } ], "source": [ "Malware(name=\"Poison Ivy\",\n", " labels=['remote-access-trojan'],\n", " description=\"A ransomware related to ...\",\n", " granular_markings=[\n", " {\n", " \"selectors\": [\"title\"],\n", " \"marking_ref\": marking_definition\n", " }\n", " ])" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "### Adding Data Markings To Existing Objects" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Both object markings and granular markings can also be added to STIX objects which have already been created.\n", "\n", "**Note**: Doing so will create a new version of the object (note the updated ``modified`` time)." ] }, { "cell_type": "code", "execution_count": 21, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--409a0b15-1108-4251-8aee-a08995976561",\n",
       "    "created": "2017-10-04T14:42:54.685Z",\n",
       "    "modified": "2017-10-04T15:03:46.599Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:42:54.685184Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82",\n",
       "        "marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 21, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator4 = indicator.add_markings(marking_definition)\n", "print(indicator4)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "You can also remove specific markings from STIX objects. This will also create a new version of the object." ] }, { "cell_type": "code", "execution_count": 22, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--409a0b15-1108-4251-8aee-a08995976561",\n",
       "    "created": "2017-10-04T14:42:54.685Z",\n",
       "    "modified": "2017-10-04T15:03:54.290Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:42:54.685184Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--f88d31f6-486f-44da-b317-01333bde0b82"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 22, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator5 = indicator4.remove_markings(marking_definition)\n", "print(indicator5)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "The markings on an object can be replaced with a different set of markings:" ] }, { "cell_type": "code", "execution_count": 23, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--409a0b15-1108-4251-8aee-a08995976561",\n",
       "    "created": "2017-10-04T14:42:54.685Z",\n",
       "    "modified": "2017-10-04T15:04:04.218Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:42:54.685184Z",\n",
       "    "object_marking_refs": [\n",
       "        "marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da",\n",
       "        "marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53"\n",
       "    ]\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 23, "metadata": {}, "output_type": "execute_result" } ], "source": [ "from stix2 import TLP_GREEN\n", "\n", "indicator6 = indicator5.set_markings([TLP_GREEN, marking_definition])\n", "print(indicator6)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "STIX objects can also be cleared of all markings:" ] }, { "cell_type": "code", "execution_count": 12, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
{\n",
       "    "type": "indicator",\n",
       "    "id": "indicator--409a0b15-1108-4251-8aee-a08995976561",\n",
       "    "created": "2017-10-04T14:42:54.685Z",\n",
       "    "modified": "2017-10-04T14:54:39.331Z",\n",
       "    "labels": [\n",
       "        "malicious-activity"\n",
       "    ],\n",
       "    "pattern": "[file:hashes.md5 = 'd41d8cd98f00b204e9800998ecf8427e']",\n",
       "    "valid_from": "2017-10-04T14:42:54.685184Z"\n",
       "}\n",
       "
\n" ], "text/plain": [ "" ] }, "execution_count": 12, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator7 = indicator5.clear_markings()\n", "print(indicator7)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "All of these functions can be used for granular markings by passing in a list of selectors. Note that they will create new versions of the objects." ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "### Evaluating Data Markings\n", "\n", "You can get a list of the object markings on a STIX object:" ] }, { "cell_type": "code", "execution_count": 19, "metadata": {}, "outputs": [ { "data": { "text/plain": [ "['marking-definition--34098fce-860f-48ae-8e50-ebd3cc5e41da',\n", " 'marking-definition--030bb5c6-c5eb-4e9c-8e7a-b9aab08ded53']" ] }, "execution_count": 19, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator6.get_markings()" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "To get a list of the granular markings on an object, pass the object and a list of selectors to ``get_markings``:" ] }, { "cell_type": "code", "execution_count": 20, "metadata": {}, "outputs": [ { "data": { "text/plain": [ "['marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9']" ] }, "execution_count": 20, "metadata": {}, "output_type": "execute_result" } ], "source": [ "malware.get_markings('name')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "You can also call ``get_markings()`` as a method on the STIX object." ] }, { "cell_type": "code", "execution_count": 14, "metadata": {}, "outputs": [ { "data": { "text/plain": [ "['marking-definition--613f2e26-407d-48c7-9eca-b8e91df99dc9']" ] }, "execution_count": 14, "metadata": {}, "output_type": "execute_result" } ], "source": [ "malware.get_markings('name')" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Finally, you may also check if an object is marked by a specific markings. Again, for granular markings, pass in the selector or list of selectors." ] }, { "cell_type": "code", "execution_count": 16, "metadata": {}, "outputs": [ { "data": { "text/plain": [ "True" ] }, "execution_count": 16, "metadata": {}, "output_type": "execute_result" } ], "source": [ "indicator.is_marked(TLP_AMBER.id)" ] }, { "cell_type": "code", "execution_count": 17, "metadata": {}, "outputs": [ { "data": { "text/plain": [ "True" ] }, "execution_count": 17, "metadata": {}, "output_type": "execute_result" } ], "source": [ "malware.is_marked(TLP_WHITE.id, 'name')" ] }, { "cell_type": "code", "execution_count": 18, "metadata": { "scrolled": true }, "outputs": [ { "data": { "text/plain": [ "False" ] }, "execution_count": 18, "metadata": {}, "output_type": "execute_result" } ], "source": [ "malware.is_marked(TLP_WHITE.id, 'description')" ] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 2 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython2", "version": "2.7.12" } }, "nbformat": 4, "nbformat_minor": 2 }