426 lines
20 KiB
Bash
426 lines
20 KiB
Bash
#! /bin/bash
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export DEBIAN_FRONTEND=noninteractive
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echo "apt-fast apt-fast/maxdownloads string 10" | debconf-set-selections;
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echo "apt-fast apt-fast/dlflag boolean true" | debconf-set-selections;
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sed -i "2ideb mirror://mirrors.ubuntu.com/mirrors.txt xenial main restricted universe multiverse\ndeb mirror://mirrors.ubuntu.com/mirrors.txt xenial-updates main restricted universe multiverse\ndeb mirror://mirrors.ubuntu.com/mirrors.txt xenial-backports main restricted universe multiverse\ndeb mirror://mirrors.ubuntu.com/mirrors.txt xenial-security main restricted universe multiverse" /etc/apt/sources.list
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apt_install_prerequisites() {
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# Add repository for apt-fast
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add-apt-repository -y ppa:apt-fast/stable
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# Install prerequisites and useful tools
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echo "[$(date +%H:%M:%S)]: Running apt-get update..."
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apt-get -qq update
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apt-get -qq install -y apt-fast
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echo "[$(date +%H:%M:%S)]: Running apt-fast install..."
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apt-fast -qq install -y jq whois build-essential git docker docker-compose unzip htop
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}
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test_prerequisites() {
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for package in jq whois build-essential git docker docker-compose unzip
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do
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echo "[$(date +%H:%M:%S)]: [TEST] Validating that $package is correctly installed..."
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# Loop through each package using dpkg
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if ! dpkg -S $package > /dev/null; then
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# If which returns a non-zero return code, try to re-install the package
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echo "[-] $package was not found. Attempting to reinstall."
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apt-get -qq update && apt-get install -y $package
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if ! which $package > /dev/null; then
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# If the reinstall fails, give up
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echo "[X] Unable to install $package even after a retry. Exiting."
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exit 1
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fi
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else
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echo "[+] $package was successfully installed!"
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fi
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done
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}
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fix_eth1_static_ip() {
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# There's a fun issue where dhclient keeps messing with eth1 despite the fact
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# that eth1 has a static IP set. We workaround this by setting a static DHCP lease.
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echo -e 'interface "eth1" {
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send host-name = gethostname();
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send dhcp-requested-address 192.168.38.105;
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}' >> /etc/dhcp/dhclient.conf
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service networking restart
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# Fix eth1 if the IP isn't set correctly
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ETH1_IP=$(ifconfig eth1 | grep 'inet addr' | cut -d ':' -f 2 | cut -d ' ' -f 1)
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if [ "$ETH1_IP" != "192.168.38.105" ]; then
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echo "Incorrect IP Address settings detected. Attempting to fix."
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ifdown eth1
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ip addr flush dev eth1
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ifup eth1
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ETH1_IP=$(ifconfig eth1 | grep 'inet addr' | cut -d ':' -f 2 | cut -d ' ' -f 1)
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if [ "$ETH1_IP" == "192.168.38.105" ]; then
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echo "[$(date +%H:%M:%S)]: The static IP has been fixed and set to 192.168.38.105"
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else
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echo "[$(date +%H:%M:%S)]: Failed to fix the broken static IP for eth1. Exiting because this will cause problems with other VMs."
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exit 1
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fi
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fi
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}
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install_golang() {
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if ! which go > /dev/null; then
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echo "[$(date +%H:%M:%S)]: Installing Golang v.1.12..."
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cd /home/vagrant || exit
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wget --progress=bar:force https://dl.google.com/go/go1.12.linux-amd64.tar.gz
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tar -C /usr/local -xzf go1.12.linux-amd64.tar.gz
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mkdir /root/go
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else
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echo "[$(date +%H:%M:%S)]: Golang seems to be installed already. Skipping."
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fi
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}
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install_splunk() {
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# Check if Splunk is already installed
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if [ -f "/opt/splunk/bin/splunk" ]; then
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echo "[$(date +%H:%M:%S)]: Splunk is already installed"
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else
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echo "[$(date +%H:%M:%S)]: Installing Splunk..."
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# Get download.splunk.com into the DNS cache. Sometimes resolution randomly fails during wget below
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dig @8.8.8.8 download.splunk.com > /dev/null
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dig @8.8.8.8 splunk.com > /dev/null
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mkdir splunk
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# Try to resolve the latest version of Splunk by parsing the HTML on the downloads page
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echo "[$(date +%H:%M:%S)]: Attempting to autoresolve the latest version of Splunk..."
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LATEST_SPLUNK=$(curl https://www.splunk.com/en_us/download/splunk-enterprise.html | grep -i deb | grep -Eo "data-link=\"................................................................................................................................" | cut -d '"' -f 2)
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# Sanity check what was returned from the auto-parse attempt
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if [[ "$(echo $LATEST_SPLUNK | grep -c "^https:")" -eq 1 ]] && [[ "$(echo $LATEST_SPLUNK | grep -c "\.deb$")" -eq 1 ]]; then
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echo "[$(date +%H:%M:%S)]: The URL to the latest Splunk version was automatically resolved as: $LATEST_SPLUNK"
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echo "[$(date +%H:%M:%S)]: Attempting to download..."
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wget --progress=bar:force -P splunk/ "$LATEST_SPLUNK"
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else
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echo "[$(date +%H:%M:%S)]: Unable to auto-resolve the latest Splunk version. Falling back to hardcoded URL..."
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# Download Hardcoded Splunk
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wget --progress=bar:force -O splunk/splunk-7.2.6-c0bf0f679ce9-linux-2.6-amd64.deb 'https://www.splunk.com/bin/splunk/DownloadActivityServlet?architecture=x86_64&platform=linux&version=7.2.6&product=splunk&filename=splunk-7.2.6-c0bf0f679ce9-linux-2.6-amd64.deb&wget=true'
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fi
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dpkg -i splunk/*.deb
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/opt/splunk/bin/splunk start --accept-license --answer-yes --no-prompt --seed-passwd changeme
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/opt/splunk/bin/splunk add index wineventlog -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index osquery -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index osquery-status -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index sysmon -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index powershell -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index bro -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index suricata -auth 'admin:changeme'
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/opt/splunk/bin/splunk add index threathunting -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_forwarder/splunk-add-on-for-microsoft-windows_500.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/add-on-for-microsoft-sysmon_800.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/asn-lookup-generator_101.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/lookup-file-editor_331.tgz
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/force-directed-app-for-splunk_200.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/punchcard-custom-visualization_130.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/sankey-diagram-custom-visualization_130.tgz -auth 'admin:changeme'
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/opt/splunk/bin/splunk install app /vagrant/resources/splunk_server/threathunting_13.tar.gz -auth 'admin:changeme'
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# Add custom Macro definitions for ThreatHunting App
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cp /vagrant/resources/splunk_server/macros.conf /opt/splunk/etc/apps/ThreatHunting/default/macros.conf
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# Fix Windows TA macros
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mkdir /opt/splunk/etc/apps/Splunk_TA_windows/local
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cp /opt/splunk/etc/apps/Splunk_TA_windows/default/macros.conf /opt/splunk/etc/apps/Splunk_TA_windows/local
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sed -i 's/wineventlog_windows/wineventlog/g' /opt/splunk/etc/apps/Splunk_TA_windows/local/macros.conf
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# Fix Force Directed App until 2.0.1 is released (https://answers.splunk.com/answers/668959/invalid-key-in-stanza-default-value-light.html#answer-669418)
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rm /opt/splunk/etc/apps/force_directed_viz/default/savedsearches.conf
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# Add a Splunk TCP input on port 9997
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echo -e "[splunktcp://9997]\nconnection_host = ip" > /opt/splunk/etc/apps/search/local/inputs.conf
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# Add props.conf and transforms.conf
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cp /vagrant/resources/splunk_server/props.conf /opt/splunk/etc/apps/search/local/
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cp /vagrant/resources/splunk_server/transforms.conf /opt/splunk/etc/apps/search/local/
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cp /opt/splunk/etc/system/default/limits.conf /opt/splunk/etc/system/local/limits.conf
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# Bump the memtable limits to allow for the ASN lookup table
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sed -i.bak 's/max_memtable_bytes = 10000000/max_memtable_bytes = 30000000/g' /opt/splunk/etc/system/local/limits.conf
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# Skip Splunk Tour and Change Password Dialog
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echo "[$(date +%H:%M:%S)]: Disabling the Splunk tour prompt..."
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touch /opt/splunk/etc/.ui_login
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mkdir -p /opt/splunk/etc/users/admin/search/local
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echo -e "[search-tour]\nviewed = 1" > /opt/splunk/etc/system/local/ui-tour.conf
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mkdir /opt/splunk/etc/apps/user-prefs/local
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echo '[general]
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render_version_messages = 0
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hideInstrumentationOptInModal = 1
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dismissedInstrumentationOptInVersion = 2
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[general_default]
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hideInstrumentationOptInModal = 1
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showWhatsNew = 0' > /opt/splunk/etc/system/local/user-prefs.conf
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# Enable SSL Login for Splunk
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echo -e "[settings]\nenableSplunkWebSSL = true" > /opt/splunk/etc/system/local/web.conf
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# Reboot Splunk to make changes take effect
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/opt/splunk/bin/splunk restart
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/opt/splunk/bin/splunk enable boot-start
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# Generate the ASN lookup table
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/opt/splunk/bin/splunk search "|asngen | outputlookup asn" -auth 'admin:changeme'
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fi
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}
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install_fleet() {
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# Install Fleet
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if [ -f "/home/vagrant/kolide-quickstart" ]; then
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echo "[$(date +%H:%M:%S)]: Fleet is already installed"
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else
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echo "[$(date +%H:%M:%S)]: Installing Fleet..."
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echo -e "\n127.0.0.1 kolide" >> /etc/hosts
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echo -e "\n127.0.0.1 logger" >> /etc/hosts
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git clone https://github.com/kolide/kolide-quickstart.git
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cd kolide-quickstart || echo "Something went wrong while trying to clone the kolide-quickstart repository"
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cp /vagrant/resources/fleet/server.* .
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sed -i 's/ -it//g' demo.sh
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./demo.sh up simple
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# Set the enrollment secret to match what we deploy to Windows hosts
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docker run --rm --network=kolidequickstart_default mysql:5.7 mysql -h mysql -u kolide --password=kolide -e 'update app_configs set osquery_enroll_secret = "enrollmentsecret" where id=1;' --batch kolide
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# Set snapshot events to be split into multiple events
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docker run --rm --network=kolidequickstart_default mysql:5.7 mysql -h mysql -u kolide --password=kolide -e 'insert into options (name, type, value) values ("logger_snapshot_event_type", 2, "true");' --batch kolide
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echo "Updated enrollment secret"
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cd /home/vagrant || exit
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fi
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}
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download_palantir_osquery_config() {
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if [ -f /home/vagrant/osquery-configuration ]; then
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echo "[$(date +%H:%M:%S)]: osquery configs have already been downloaded"
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else
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# Import Palantir osquery configs into Fleet
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echo "[$(date +%H:%M:%S)]: Downloading Palantir osquery configs..."
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git clone https://github.com/palantir/osquery-configuration.git
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fi
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}
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import_osquery_config_into_fleet() {
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wget --progress=bar:force https://github.com/kolide/fleet/releases/download/2.1.1/fleet_2.1.1.zip
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unzip fleet_2.1.1.zip -d fleet_2.1.1
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cp fleet_2.1.1/linux/fleetctl /usr/local/bin/fleetctl && chmod +x /usr/local/bin/fleetctl
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fleetctl config set --address https://192.168.38.105:8412
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fleetctl config set --tls-skip-verify true
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fleetctl setup --email admin@detectionlab.network --username admin --password 'admin123#' --org-name DetectionLab
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fleetctl login --email admin@detectionlab.network --password 'admin123#'
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# Use fleetctl to import YAML files
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fleetctl apply -f osquery-configuration/Fleet/Endpoints/MacOS/osquery.yaml
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fleetctl apply -f osquery-configuration/Fleet/Endpoints/Windows/osquery.yaml
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for pack in osquery-configuration/Fleet/Endpoints/packs/*.yaml
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do fleetctl apply -f "$pack"
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done
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# Add Splunk monitors for Fleet
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/opt/splunk/bin/splunk add monitor "/home/vagrant/kolide-quickstart/osquery_result" -index osquery -sourcetype 'osquery:json' -auth 'admin:changeme'
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/opt/splunk/bin/splunk add monitor "/home/vagrant/kolide-quickstart/osquery_status" -index osquery-status -sourcetype 'osquery:status' -auth 'admin:changeme'
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}
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install_bro() {
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echo "[$(date +%H:%M:%S)]: Installing Bro..."
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# Environment variables
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NODECFG=/opt/bro/etc/node.cfg
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SPLUNK_BRO_JSON=/opt/splunk/etc/apps/TA-bro_json
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SPLUNK_BRO_MONITOR='monitor:///opt/bro/spool/manager'
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SPLUNK_SURICATA_MONITOR='monitor:///var/log/suricata'
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SPLUNK_SURICATA_SOURCETYPE='json_suricata'
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echo "deb http://download.opensuse.org/repositories/network:/bro/xUbuntu_16.04/ /" > /etc/apt/sources.list.d/bro.list
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curl -s http://download.opensuse.org/repositories/network:/bro/xUbuntu_16.04/Release.key |apt-key add -
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# Update APT repositories
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apt-get -qq -ym update
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# Install tools to build and configure bro
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apt-get -qq -ym install bro crudini python-pip
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export PATH=$PATH:/opt/bro/bin
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pip install bro-pkg
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bro-pkg refresh
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bro-pkg autoconfig
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bro-pkg install --force salesforce/ja3
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# Load bro scripts
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echo '
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@load protocols/ftp/software
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@load protocols/smtp/software
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@load protocols/ssh/software
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@load protocols/http/software
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@load tuning/json-logs
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@load policy/integration/collective-intel
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@load policy/frameworks/intel/do_notice
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@load frameworks/intel/seen
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@load frameworks/intel/do_notice
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@load frameworks/files/hash-all-files
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@load policy/protocols/smb
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@load policy/protocols/conn/vlan-logging
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@load policy/protocols/conn/mac-logging
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@load ja3
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redef Intel::read_files += {
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"/opt/bro/etc/intel.dat"
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};
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' >> /opt/bro/share/bro/site/local.bro
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# Configure Bro
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crudini --del $NODECFG bro
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crudini --set $NODECFG manager type manager
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crudini --set $NODECFG manager host localhost
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crudini --set $NODECFG proxy type proxy
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crudini --set $NODECFG proxy host localhost
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# Setup $CPUS numbers of bro workers
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crudini --set $NODECFG worker-eth1 type worker
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crudini --set $NODECFG worker-eth1 host localhost
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crudini --set $NODECFG worker-eth1 interface eth1
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crudini --set $NODECFG worker-eth1 lb_method pf_ring
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crudini --set $NODECFG worker-eth1 lb_procs "$(nproc)"
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# Setup bro to run at boot
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cp /vagrant/resources/bro/bro.service /lib/systemd/system/bro.service
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systemctl enable bro
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systemctl start bro
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# Setup splunk TA to ingest bro and suricata data
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git clone https://github.com/jahshuah/splunk-ta-bro-json $SPLUNK_BRO_JSON
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mkdir -p $SPLUNK_BRO_JSON/local
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cp $SPLUNK_BRO_JSON/default/inputs.conf $SPLUNK_BRO_JSON/local/inputs.conf
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_BRO_MONITOR index bro
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_BRO_MONITOR sourcetype json_bro
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_BRO_MONITOR whitelist '.*\.log$'
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_BRO_MONITOR blacklist '.*(communication|stderr)\.log$'
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_BRO_MONITOR disabled 0
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_SURICATA_MONITOR index suricata
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_SURICATA_MONITOR sourcetype json_suricata
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_SURICATA_MONITOR whitelist 'eve.json'
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crudini --set $SPLUNK_BRO_JSON/local/inputs.conf $SPLUNK_SURICATA_MONITOR disabled 0
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crudini --set $SPLUNK_BRO_JSON/local/props.conf $SPLUNK_SURICATA_SOURCETYPE TRUNCATE 0
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# Ensure permissions are correct and restart splunk
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chown -R splunk $SPLUNK_BRO_JSON
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/opt/splunk/bin/splunk restart
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# Verify that Bro is running
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if ! pgrep -f bro > /dev/null; then
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echo "Bro attempted to start but is not running. Exiting"
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exit 1
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fi
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}
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install_suricata() {
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# Run iwr -Uri testmyids.com -UserAgent "BlackSun" in Powershell to generate test alerts
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echo "[$(date +%H:%M:%S)]: Installing Suricata..."
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# Install yq to maniuplate the suricata.yaml inline
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/usr/local/go/bin/go get -u github.com/mikefarah/yq
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# Install suricata
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add-apt-repository -y ppa:oisf/suricata-stable
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apt-get -qq -y update && apt-get -qq -y install suricata crudini
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test_suricata_prerequisites
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# Install suricata-update
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cd /home/vagrant || exit 1
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git clone https://github.com/OISF/suricata-update.git
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cd /home/vagrant/suricata-update || exit 1
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python setup.py install
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# Add DC_SERVERS variable to suricata.yaml in support et-open signatures
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml vars.address-groups.DC_SERVERS '$HOME_NET'
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# It may make sense to store the suricata.yaml file as a resource file if this begins to become too complex
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# Add more verbose alert logging
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.payload true
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.payload-buffer-size 4kb
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.payload-printable yes
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.packet yes
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.http yes
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.tls yes
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.ssh yes
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/root/go/bin/yq w -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.0.alert.smtp yes
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# Turn off traffic flow logging (duplicative of Bro and wrecks Splunk trial license)
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/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.1 # Remove HTTP
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/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.1 # Remove DNS
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|
/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.1 # Remove TLS
|
|
/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.2 # Remove SMTP
|
|
/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.2 # Remove SSH
|
|
/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.2 # Remove Stats
|
|
/root/go/bin/yq d -i /etc/suricata/suricata.yaml outputs.1.eve-log.types.2 # Remove Flow
|
|
# Enable JA3 fingerprinting
|
|
/root/go/bin/yq w -i /etc/suricata/suricata.yaml app-layer.protocols.tls.ja3-fingerprints true
|
|
# AF packet monitoring should be set to eth1
|
|
/root/go/bin/yq w -i /etc/suricata/suricata.yaml af-packet.0.interface eth1
|
|
|
|
|
|
crudini --set --format=sh /etc/default/suricata '' iface eth1
|
|
# update suricata signature sources
|
|
suricata-update update-sources
|
|
# disable protocol decode as it is duplicative of bro
|
|
echo re:protocol-command-decode >> /etc/suricata/disable.conf
|
|
# enable et-open and attackdetection sources
|
|
suricata-update enable-source et/open
|
|
suricata-update enable-source ptresearch/attackdetection
|
|
# Add the YAML header to the top of the suricata config
|
|
echo "Adding the YAML header to /etc/suricata/suricata.yaml"
|
|
echo -e "%YAML 1.1\n---\n$(cat /etc/suricata/suricata.yaml)" > /etc/suricata/suricata.yaml
|
|
|
|
# Update suricata and restart
|
|
suricata-update
|
|
service suricata stop
|
|
service suricata start
|
|
sleep 3
|
|
|
|
# Verify that Suricata is running
|
|
if ! pgrep -f suricata > /dev/null; then
|
|
echo "Suricata attempted to start but is not running. Exiting"
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
test_suricata_prerequisites() {
|
|
for package in suricata crudini
|
|
do
|
|
echo "[$(date +%H:%M:%S)]: [TEST] Validating that $package is correctly installed..."
|
|
# Loop through each package using dpkg
|
|
if ! dpkg -S $package > /dev/null; then
|
|
# If which returns a non-zero return code, try to re-install the package
|
|
echo "[-] $package was not found. Attempting to reinstall."
|
|
apt-get -qq update && apt-get install -y $package
|
|
if ! which $package > /dev/null; then
|
|
# If the reinstall fails, give up
|
|
echo "[X] Unable to install $package even after a retry. Exiting."
|
|
exit 1
|
|
fi
|
|
else
|
|
echo "[+] $package was successfully installed!"
|
|
fi
|
|
done
|
|
|
|
# One-off support for packages which aren't installed via dpkg
|
|
echo "[$(date +%H:%M:%S)]: [TEST] Validating that yq is correctly installed..."
|
|
# Check if the binary exists
|
|
if ! [ -f /root/go/bin/yq ]; then
|
|
# If it doesn't exist, try to re-install the package
|
|
echo "[-] yq was not found. Attempting to reinstall."
|
|
/usr/local/go/bin/go get -u github.com/mikefarah/yq
|
|
if ! [ -f /root/go/bin/yq ]; then
|
|
# If the reinstall fails, give up
|
|
echo "[X] Unable to install yq even after a retry. Exiting."
|
|
exit 1
|
|
fi
|
|
else
|
|
echo "[+] yq was successfully installed!"
|
|
fi
|
|
}
|
|
|
|
postinstall_tasks() {
|
|
# Include Splunk and Bro in the PATH
|
|
echo export PATH="$PATH:/opt/splunk/bin:/opt/bro/bin" >> ~/.bashrc
|
|
}
|
|
|
|
main() {
|
|
apt_install_prerequisites
|
|
test_prerequisites
|
|
fix_eth1_static_ip
|
|
install_golang
|
|
install_splunk
|
|
install_fleet
|
|
download_palantir_osquery_config
|
|
import_osquery_config_into_fleet
|
|
install_suricata
|
|
install_bro
|
|
postinstall_tasks
|
|
}
|
|
|
|
main
|
|
exit 0
|