300-220 Conducting Threat Hunting and Defending using Cisco Technologies for Cybersecurity Practice Questions
Prepare for 300-220 with more than an answer.
- 1
While investigating an alert on a Windows domain member server, a forensic analyst correlates Sysmon and Windows PowerShell operational logs. The logs reveal that an obfuscated PowerShell script obtained a process handle to
lsass.exeand invoked memory-dumping routines to extract credentials from LSASS memory, matching knownAPT28tradecraft. When attributing this logged activity within the MITRE ATT&CK hierarchy, how is each component categorized?Show answer details
Correct answer: A
In MITRE ATT&CK,
tacticsrepresent the high-level adversary objective (TA0006Credential Access),techniquesrepresent the behavior used to achieve that objective (OS Credential Dumping), andsub-techniquesbreak the technique down into more specific actions (LSASS Memory, as distinct fromSecurity Account Manageror/etc/passwdand/etc/shadow).Proceduresdescribe the specific real-world implementation executed by a threat actor, such asAPT28using PowerShell to accesslsass.exememory. - 2
To hunt for suspicious PowerShell warning events recorded since yesterday across Windows endpoints, a threat hunter executes the following command:
Get-WinEvent _____ @{ LogName='Windows PowerShell'; Level=3; StartTime=$Yesterday }Which parameter completes the command to filter events using key/value pairs?
Show answer details
Correct answer: D
In PowerShell, the
Get-WinEventcmdlet uses the-FilterHashtableparameter to accept a hashtable (@{ ... }) of key/value pairs such asLogName,Level,Id, andStartTimeto efficiently query Windows event logs.-FilterXPathand-FilterXmlrequire XPath expressions or structured XML strings rather than a PowerShell hashtable. - 3
A defense contractor's threat hunting team is reconstructing a multi-stage intrusion timeline across an enclave of Windows engineering servers and network appliances. By correlating endpoint process logs, Windows Security event logs, and perimeter firewall telemetry, the team isolates four distinct chronological phases of adversary activity.
In Phase 1 (01:14 UTC), endpoint process logs on an engineering workstation show the execution of
whoami /all,nltest /dclist:, andnet group "Domain Admins" /domainto enumerate accounts and domain controllers. In Phase 2 (01:19 UTC), logs show the adversary tampering with the local EDR sensor pipeline and breaking log-forwarding mechanisms to blind security tooling. In Phase 3 (01:42 UTC), Windows authentication logs across three internal file servers record Network Logon events using stolen NTLM hashes (Pass-the-Hash) to pivot between systems.In Phase 4 (02:15 UTC), firewall session logs record 4.2 GB of compressed archive files transferred over an encrypted channel to an external cloud storage host. The lead threat hunter must map Phases 1 through 4 in chronological order to the accurate MITRE ATT&CK Enterprise tactic identifiers for the attribution report. Which sequence is correct?
Show answer details
Correct answer: D
Mapping the logged behaviors chronologically to the MITRE ATT&CK Enterprise tactics yields: Phase 1 (
whoami,nltest,net groupto learn about the environment) maps toTA0007(Discovery); Phase 2 (breaking security mechanisms, telemetry pipelines, and EDR tooling) maps toTA0112(Defense Impairment); Phase 3 (pivoting across internal servers via Pass-the-Hash) maps toTA0008(Lateral Movement); and Phase 4 (stealing 4.2 GB of archived data out of the network) maps toTA0010(Exfiltration). - 4
During a capability review of a regional bank's security operations center, a threat hunting lead maps the team's current detection practices against the Pyramid of Pain and the Threat Hunting Maturity Model. The team currently relies strictly on automated firewall and EDR rules that match known SHA-256 file hashes, static IP addresses, and domain names from external feeds, without collecting or analyzing host or network behavioral telemetry. Which statement accurately describes the operational impact of this posture?
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Correct answer: D
In David Bianco's Pyramid of Pain, Hash Values (Trivial), IP Addresses (Easy), and Domain Names (Simple) occupy the bottom three layers. Because attackers can easily modify binary hashes or rotate IP and domain infrastructure, relying solely on automated matching of these atomic indicators keeps an organization at the lowest phases of the Threat Hunting Maturity Model. Forcing adversaries to abandon tools or rewrite protocols requires detecting at the Tools and TTPs layers. Furthermore, the TaHiTI methodology specifically focuses on the top three layers of the Pyramid of Pain (Network/Host Artifacts, Tools, and TTPs), not the bottom three.
- 5
While designing a roadmap to advance a healthcare provider's SOC to a higher phase of the Threat Hunting Maturity Model, a security architect evaluates how the team consumes threat intelligence across the Pyramid of Pain. The environment makes extensive administrative use of PowerShell for routine server maintenance. Recent threat intelligence indicates that a targeted adversary group abuses native PowerShell to execute credential harvesting without dropping custom binaries on disk. Which capability shift is required to effectively hunt and disrupt this adversary at the corresponding level of the Pyramid of Pain?
graph BT L1["Hash Values (Trivial)"] --> L2["IP Addresses (Easy)"] L2 --> L3["Domain Names (Simple)"] L3 --> L4["Network / Host Artifacts (Annoying)"] L4 --> L5["Tools (Challenging)"] L5 --> L6["TTPs (Tough!)"]Show answer details
Correct answer: A
The Pyramid of Pain reflects both the pain caused to an attacker when indicators are denied and the detection difficulty for defenders. When an attacker abuses a legitimate, built-in administrative utility like PowerShell without dropping custom files on disk, static file hashes (SHA-1/MD5) and binary YARA signatures are ineffective. Advancing up the Threat Hunting Maturity Model to hunt at the Host Artifacts and TTPs layers requires collecting granular host telemetry (such as PowerShell script-block and command-line logs) and distinguishing malicious procedures from legitimate administrative baselines.
- 6
A global manufacturing enterprise is restructuring its cybersecurity defense program after a post-incident review revealed that a sophisticated intrusion went undetected for four months. Currently, the organization's security operations center relies on a SIEM that ingests perimeter firewall connection logs and endpoint antivirus hash alerts. Whenever the team receives a threat intelligence bulletin, analysts manually search the SIEM for the listed MD5 hashes, IP addresses, and domain names, representing a basic indicator-driven maturity phase.
During the four-month intrusion, the threat actor rotated C2 IP addresses every 12 hours, switched to newly registered domains every 48 hours, and padded binary payloads on each host to generate unique cryptographic file hashes. However, forensic reconstruction showed that the actor's implant consistently transmitted a custom HTTP User-Agent string containing an extra semicolon, created a specific Windows registry Run key pattern on compromised hosts, and laterally moved across servers using Pass-the-Hash authentication.
Executive leadership has mandated an architectural and procedural overhaul to advance the organization's Threat Hunting Maturity Model phase. The CISO requires the team to proactively uncover adversaries who evade atomic indicators and to operationalize successful hunts so analysts do not manually repeat identical data queries every week. Which strategy fulfills these requirements?
Show answer details
Correct answer: B
Advancing through the phases of the Threat Hunting Maturity Model requires expanding routine data collection from basic network connection and antivirus alerts to comprehensive host and protocol telemetry, enabling hunters to operate at the top layers of the Pyramid of Pain. Collecting HTTP proxy headers exposes the distinctive User-Agent string (Network Artifact), registry telemetry exposes the persistence key (Host Artifact), and Windows authentication logs expose Pass-the-Hash behavior (TTPs). Finally, highest-maturity hunting programs automate and operationalize proven data analysis procedures into continuous detection rules so hunters can focus on new hypotheses rather than repeating manual searches.
