Tabletop Exercises Center For Internet Security

Summary

Tabletop Exercises
Six Scenarios to Help Prepare Your
Cybersecurity Team
October 18, 2018
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Contents
Contents .................................................................................................................i
Introduction ........................................................................................................... 1
Getting started ....................................................................................................... 1
How to use these tabletop exercises .................................................................................. 1
Exercise 1 ............................................................................................................... 2
The Quick Fix........................................................................................................................ 2
Exercise 2 ............................................................................................................... 3
A Malware Infection ............................................................................................................ 3
Exercise 3 ............................................................................................................... 4
The Unplanned Attack ......................................................................................................... 4
Exercise 4 ............................................................................................................... 5
The Cloud Compromise ....................................................................................................... 5
Exercise 5 ............................................................................................................... 6
Financial Break-in ................................................................................................................ 6
Exercise 6 ............................................................................................................... 7
The Flood Zone .................................................................................................................... 7
Additional Information ........................................................................................... 8
Resources - Free .................................................................................................................. 8
Resources - Free for U.S. State, Local, Tribal, and Territorial (SLTT) Government Entities 8
Resources - Paid................................................................................................................... 8
About CIS ............................................................................................................................. 9
i
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Introduction
At CIS® (Center for Internet Security, Inc.®), we believe everyone deserves a secure online
experience. We recognize that security is a shared responsibility between users,
administrators, and technical professionals. We developed this white paper about tabletop
exercises to help cybersecurity teams develop tactical strategies for securing their systems

This guide is organized so that the exercises and discussion questions become more
challenging and difficult as the white paper moves forward. However, you can easily jump to
the section or exercise that most interests you. For more information about cybersecurity
best practices, visit our website: https://www.cisecurity.org/

Getting started
How to use these tabletop exercises
Tabletop exercises are meant to help organizations consider different risk scenarios and
prepare for potential cyber threats. All of the exercises featured in this white paper can be
completed in as little as 15 minutes, making them a convenient tool for putting your team in
the cybersecurity mindset. In addition, each scenario will list the processes that are tested,
threat actors that are identified, and the assets that are impacted

Tips and tricks
• Designate a single individual to facilitate the exercise

• Break the scenario into meaningful learning points

• Read the scenario aloud to the group and ensure their understanding

• Facilitate a conversation about how your organization would handle the scenario,
focusing on key learning points as you discuss

• Include applicable members of other business units

• Be sure to follow up on any gaps identified during the exercise

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Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 1
The Quick Fix
SCENARIO: Joe, your network administrator, is overworked and underpaid. His bags are
packed and ready for a family vacation to Disney World when he is tasked with deploying a
critical patch. In order to make his flight, Joe quickly builds an installation file for the patch
and deploys it before leaving for his trip. Next, Sue, the on-call service desk technician, begins
receiving calls that nobody can log in. It turns out that no testing was done for the recently-
installed critical patch

What is your response?
Discussion questions
• What is Sue’s response in this scenario?
o Does your on-call technician have the expertise to handle this incident? If
not, are there defined escalation processes?
• Does your organization have a formal change control policy?
o Are your employees trained on proper change control?
o Does your organization have disciplinary procedures in place for when an
employee fails to follow established policies?
• Does your organization have the ability to “roll back” patches in the event of
unanticipated negative impacts?
Processes tested: Patch Management
Threat actor: Insider
Asset impacted: Internal Network
Applicable CIS Controls™: CIS Control 2: Inventory and Control of Software Assets, CIS
Control 5: Secure Configuration for Hardware and Software on Mobile Devices, Laptops,
Workstations and Servers, CIS Control 6: Maintenance, Monitoring, and Analysis of Audit
Logs
2
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 2
A Malware Infection
SCENARIO: An employee within your organization used the company’s digital camera for
business purposes. In the course of doing so, they took a scenic photograph that they then
loaded onto their personal computer by inserting the SD card. The SD card was infected with
malware while connected to the employee’s personal computer. When re-inserted into a
company machine, it infected the organization’s system with the same malware

What is your response?
Discussion questions
• Who within the organization would you need to notify?
• How would your organization identify and respond to malware infecting your
system through this vector?
o What is the process for identifying the infection vector?
• What other devices could present similar threats?
• What should management do?
• How can you prevent this from occurring again?
o Does your organization have training and policies in place to prevent this?
o Do policies apply to all storage devices?
Processes tested: Detection ability/User awareness
Threat actor: Accidental insider
Asset impacted: Network integrity
Applicable CIS Controls: CIS Control 8: Malware Defenses, CIS Control 9: Limitation and
Control of Network Ports, Protocols, and Services, CIS Control 12: Boundary Defense
3
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 3
The Unplanned Attack
SCENARIO: A hacktivist group threatens to target your organization following an incident
involving an allegation of use of excessive force by law enforcement. You do not know the
nature of the attack they are planning. How can you improve your posture to best protect
your organization?
What is your response?
Discussion questions
• What are the potential threat vectors?
• Have you considered which attack vectors have been most common over the past
month?
o Are there other methods you can use to prioritize threats?
• Have you checked your patch management status?
• Can you increase monitoring of your IDS and IPS?
o If you don’t have the resources to do so, is there another organization that
could be called upon to assist?
• What organizations or companies could assist you with analyzing any malware that is
identified?
• How do you alert your help desk?
• Do you have a way of notifying the entire organization of the current threat (bulletin
board, etc.)?
• Does your Incident Response Plan account for these types of situations?
Processes tested: Preparation
Threat actor: Hacktivist
Asset impacted: Unknown
Applicable CIS Controls: CIS Control 8: Malware Defenses, CIS Control 12: Boundary
Defense, CIS Control 17: Implement a Security Awareness and Training Program, CIS
Control 19: Incident Response and Management
4
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 4
The Cloud Compromise
SCENARIO: One of your organization’s internal departments frequently uses outside cloud
storage to store large amounts of data, some of which may be considered sensitive. You have
recently learned that the cloud storage provider that is being used has been publicly
compromised and large amounts of data have been exposed. All user passwords and data
stored in the cloud provider’s infrastructure may have been compromised

What is your response?
Discussion questions
• Does your organization have current polices that consider 3rd party cloud storage?
• Should your organization still be held accountable for the data breach?
• What actions and procedures would be different if this was a data breach on your
own local area network?
• What should management do?
• What, if anything, do you tell your constituents?
o How/when would you notify them?
Processes tested: Incident response
Threat actor: External threat
Asset impacted: Cloud
Applicable CIS Controls: CIS Control 10: Data Recovery Capabilities, CIS Control 13:
Data Protection, CIS Control 19: Incident Response and Management
5
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 5
Financial Break-in
SCENARIO: A routine financial audit reveals that several people receiving paychecks are not,
and have never been, on payroll. A system review indicates they were added to the payroll
approximately one month prior, at the same time, via a computer in the financial
department

What is your response?
INJECT: You confirm the computer in the payroll department was used to make the additions

Approximately two weeks prior to the addition of the new personnel, there was a physical
break-in to the finance department in which several laptops without sensitive data were
taken

OPTIONAL INJECT: Further review indicates that all employees are paying a new "fee" of $20
each paycheck and that money is being siphoned to an off-shore bank account

Having this additional information, how do you proceed?
Discussion questions
• What actions could you take after the initial break in?
• Do you have the capability to audit your physical security system?
• Who would/should be notified?
• Would you able to assess the damages associated from the break in?
• Would you be able to find out what credentials may have been stored on the laptop?
• How would you notify your employees of the incident?
• How do you contain the incident?
o Optional Inject question: How do you compensate the employees?
Processes tested: Incident Response
Threat actor: External Threat
Asset impacted: HR/Financial data
Applicable CIS Controls: CIS Control 4: Controlled Use of Administrative Privileges, CIS
Control 16: Account Monitoring and Control, CIS Control 19: Incident Response and
Management
6
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Exercise 6
The Flood Zone
SCENARIO: Your organization is located within a flood zone. Winter weather combined with
warming temperatures has caused flooding throughout the area. Local authorities have
declared a state of emergency. In the midst of managing the flooding, a ransomware attack
occurs on your facility, making computer systems inoperable

What is your response?
Discussion questions
• Do you have a COOP (Continuity of Operations Plan) or DRP (Disaster Recovery
Plan)?
o If so, do you carry out an annual simulation to ensure the COOP or DRP is
sufficient and running smoothly?
• Do you have an Incident Response Plan (IRP) that specifically details ransomware
steps?
o What steps will you take if restoring from backup is not an option?
o Does your IRP only take into account the financial implications of a
cybersecurity incident, or does it consider the severity of the situation as
well?
o Do you have a plan in place for how to acquire bitcoin?
o Have you considered that a targeted ransomware attack may require more
bitcoin than is easily accessible on the market?
• Do you have a backup for completing Emergency Operations Center (EOC)
processes without a computer system?
o Can you route emergency communications/processes through a neighboring
entity?
• Who do you need to notify, and how will you do so?
o Consider that increased phone traffic may be congesting the lines

Processes tested: Emergency response
Threat actor: External threat
Asset impacted: Emergency Operations Center Processes
Applicable CIS Controls: CIS Control 7: Email and Web Browser Protections, CIS Control 19:
Incident Response and Management
7
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
Additional Information
Interested in cybersecurity best practices? CIS is here to help! Check out the resources below
to take the next step towards security and compliance:
Resources - Free
CIS Benchmarks: https://www.cisecurity.org/cis-benchmarks/
CIS Controls: https://www.cisecurity.org/controls/
CIS-CAT Lite: https://learn.cisecurity.org/cis-cat-landing-page
Sample Remediation Kit: https://learn.cisecurity.org/remediation-kits
Webinar: CIS-CAT Pro Demo: https://www.cisecurity.org/cis-benchmarks/cis-benchmarks-
webinar/
Resources - Free for U.S. State, Local, Tribal, and Territorial
(SLTT) Government Entities
MS-ISAC Membership (for U.S. SLTTs): https://learn.cisecurity.org/ms-isac-registration
EI-ISAC Membership (for U.S. SLTTs supporting elections): https://www.cisecurity.org/ei-
isac/
Resources - Paid
CIS SecureSuite Membership: https://www.cisecurity.org/cis-securesuite/
CIS Hardened Images: https://www.cisecurity.org/services/hardened-virtual-images/
8
Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team
About CIS
CIS® (Center for Internet Security, Inc.) is a forward-thinking, non-profit entity that harnesses
the power of a global IT community to safeguard private and public organizations against
cyber threats. The CIS Controls™ and CIS Benchmarks™ are the global standard and
recognized best practices for securing IT systems and data against the most pervasive
attacks. These proven guidelines are continuously refined and verified by a volunteer, global
community of experienced IT professionals. Our CIS Hardened Images are virtual machine
emulations preconfigured to provide secure, on-demand, and scalable computing
environments in the cloud. CIS is home to both the Multi-State Information Sharing and
Analysis Center® (MS-ISAC®), the go-to resource for cyber threat prevention, protection,
response, and recovery for U.S. State, Local, Tribal, and Territorial government entities, and
the Elections Infrastructure Information Sharing and Analysis Center™ (EI-ISAC™), which
supports the cybersecurity needs of U.S. State, Local and Territorial elections offices

Contact Information
CIS
31 Tech Valley Drive
East Greenbush, NY 12061
518.266.3460
[email protected]
9

Tabletop Exercises: Six Scenarios to Help Prepare Your Cybersecurity Team 1 Introduction At CIS® (Center for Internet Security, Inc.®), we believe everyone deserves a secure online

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Frequently Asked Questions

What are tabletop cybersecurity exercises and why are they important?

Tabletop exercises are meant to help organizations consider different risk scenarios and prepare for potential cyber threats. All of the exercises featured in this white paper can be completed in as little as 15 minutes, making them a convenient tool for putting your team in the cybersecurity mindset.

What are cyber security incident preparedness tabletop exercises?

Cyber security incident preparedness tabletop exercises are an essential part of an organizational training strategy when it comes to getting your team members and personnel ready for an actual security incident.

What is an incident response tabletop exercise?

An incident response tabletop exercise is an important form of organizational training about security incident preparedness, taking participants through the process of conducting incident simulation scenarios and providing hands-on training for participants that can then highlight flaws in incident response planning.

What are tabletop exercise packages?

CISA Tabletop Exercise Packages (CTEPs) are a comprehensive set of resources designed to assist stakeholders in conducting their own exercises. Partners can use CTEPs to initiate discussions within their organizations about their ability to address a variety of threat scenarios.