ECCouncil 312-39 (Certified SOC Analyst) Practice Test 37

Question 360

A confirmed identity breach affects on-premises and cloud services. Which response model reduces the chance that cloud sessions remain active after on-prem password resets?

  1. Disable all cloud audit logging during identity recovery
  2. Treat cloud applications as unrelated because the original alert came from a domain controller
  3. Have the on-prem team declare success after changing a single password
  4. Coordinate account actions across identity providers, applications, and incident responders

Explanation

Correct Answer

D:

Federated and application sessions may have distinct revocation paths, so cross-team tracking is necessary for complete access containment.

Incorrect Answers

A:

Telemetry is needed to verify whether suspect sessions continue and to discover additional persistence.

B:

One compromised principal may access both environments, making cross-boundary scope investigation essential.

C:

One credential reset may not terminate all issued tokens or attacker-controlled application grants in integrated services.

Question 361

A responder copies a suspicious disk image to a forensic workstation. How can they demonstrate the acquired image remained unchanged during handling?

  1. Rename the image file to include the word original
  2. Hash the forensic image and verify its digest after transfer
  3. Open the image in an editor and save it with a newer modification time
  4. Rely only on the amount of time required to copy the file

Explanation

Correct Answer

B:

Matching digests support byte-level integrity verification when acquisition scope and custody documentation are preserved.

Incorrect Answers

A:

A name can change without indicating whether content bytes were altered during transfer.

C:

Writing to the original can alter evidence and undermine independent comparison with the acquisition.

D:

Transfer duration does not validate that all bytes arrived unchanged or identify handling history.

Question 362

Two analysts handle a malware evidence drive in different shifts. What must a chain-of-custody record include?

  1. Only a generic note that security staff saw the drive
  2. Who possessed the item, transfer times, purpose, and identifiers or seals
  3. Only the workstation brand used by the first analyst
  4. Only the total number of alerts generated during the investigation

Explanation

Correct Answer

B:

Documented custody supports the credibility of evidence by tracing control and any opportunities for alteration.

Incorrect Answers

A:

An unspecific statement omits personnel, handling intervals, and provenance needed for later review.

C:

Equipment details may help procedure records but cannot replace the identity and chronology of evidence possession.

D:

Alert counts are unrelated to how a particular physical evidence item was controlled across shifts.

Question 363

An infected host is running and may contain decrypted malware configuration in memory. Which order best preserves this artifact?

  1. Replace the endpoint's DNS cache without recording the original state
  2. Power off the host and assume all memory content persists on disk
  3. Reinstall the operating system before any evidence capture
  4. Capture the relevant volatile memory before shutdown

Explanation

Correct Answer

D:

RAM contents may disappear when a system is shut down; safety and containment obligations still guide the acquisition decision.

Incorrect Answers

A:

Resetting caches destroys some volatile context and cannot substitute for memory acquisition.

B:

Volatile memory is not reliably retained after shutdown, so transient processes and secrets may be lost.

C:

Reinstallation changes both volatile and persistent artifacts and can erase important traces of the compromise.

Question 364

A disk must be examined without altering the source media. Which control directly reduces accidental writes during acquisition?

  1. Running the suspect executable directly from the evidence disk
  2. A validated forensic write blocker or read-only acquisition path
  3. Using a normal file manager without checking automatic filesystem behavior
  4. Mounting the evidence read-write to speed indexing

Explanation

Correct Answer

B:

Restricting writes preserves source integrity and helps maintain a defensible record of the acquisition method.

Incorrect Answers

A:

Execution can change files and may compromise the examination environment.

C:

General-purpose tools can update metadata or caches unless read-only protections are deliberately enforced.

D:

A writable mount risks modifying metadata or files, making post-acquisition comparisons less trustworthy.

Question 365

An incident response team collects a 2 TB server image although only a small incident window is relevant. What is the most important reporting distinction?

  1. Delete the original immediately after creating a case summary
  2. Differentiate preserved source evidence from analysis extracts
  3. Edit timestamps within the source image to match the SIEM timeline
  4. Treat all unrelated private files in the image as approved for unrestricted sharing

Explanation

Correct Answer

B:

A full image may support later review, while documented targeted extractions improve efficiency and privacy without silently changing original evidence.

Incorrect Answers

A:

A summary cannot reproduce all relevant artifacts if new findings emerge or a review is required.

C:

Changing the original destroys provenance and makes it harder to identify genuine clock skew or file activity.

D:

Collection scope does not remove privacy or access restrictions for data irrelevant to the case.

Question 366

An investigation must determine whether an exploit request received a malicious server response. Which two artifacts are useful? Choose TWO.

  1. Only the number of users connected to Wi-Fi that day
  2. Packet capture of the relevant bidirectional session when available
  3. Only an inventory of the network interface model
  4. Only a screenshot of the network sensor's green status light
  5. Web-server access and application error logs for the corresponding transaction

Explanation

Correct Answers

B:

A capture may show request and response details or transport metadata, subject to encryption and capture completeness.

E:

Server-side logs help correlate the request to executed handlers, errors, and affected application state.

Incorrect Answers

A:

An aggregate user count cannot identify the exploit payload or response for the targeted server session.

C:

Hardware information does not reconstruct an individual HTTP exchange or its server-side handling.

D:

Sensor status says little about content or outcome of a specific exploit request.

Question 367

A packet capture contains a TLS connection to an address shared by multiple websites behind a CDN. Investigators need to identify the intended website without overstating certainty. Which correlation is most defensible?

  1. Assume the certificate issuer alone uniquely identifies the requested site
  2. Attribute the connection to the most famous website hosted at that IP address
  3. Treat an IP reputation label as proof that every connection to the address used one malicious domain
  4. Join client DNS history and visible TLS server-name or proxy host records to the flow timing

Explanation

Correct Answer

D:

Time-aligned hostname evidence can narrow the destination behind a shared address, while encrypted ClientHello or missing logs may limit attribution confidence.

Incorrect Answers

A:

A certificate authority signs certificates for many customers, so issuer identity is not enough to establish an individual hostname.

B:

A shared edge address can serve many unrelated websites, and popularity does not identify the hostname that the client intended.

C:

Reputation can guide triage, but shared infrastructure and changing DNS records prevent a unique domain conclusion from address reputation alone.

Question 368

A disk timeline shows hundreds of files modified on the same minute, just after a documented mass restore from backup. Which finding is most defensible?

  1. All listed files must have been independently modified by the attacker at that minute
  2. Discard the filesystem timeline because a single bulk restore makes every other event unreliable
  3. The backup platform has proven that all pre-restore file timestamps are forensically accurate
  4. Corroborate file times against backup records and independent artifacts

Explanation

Correct Answer

D:

A batch restore can distort file metadata; journal records, prior snapshots, application events, and backup manifests help separate restore effects from user actions.

Incorrect Answers

A:

A restoration process can set or reset file timestamps in bulk; timestamp coincidence is not independent evidence of malicious modification.

B:

The affected timestamps require qualification, but many unrelated system and application records may still provide sound, separately supported chronology.

C:

Backup tooling may restore selected attributes while modifying others. The analyst must verify timestamps against original sources and acquisition behavior.

Question 369

A suspicious email carries a password-protected archive. The gateway recorded the message but did not inspect the encrypted attachment. What evidence handling best supports later malware analysis?

  1. Preserve the raw MIME message and inspect verified copies safely
  2. Forward the original archive to every analyst and let them test decryption on their work laptops
  3. Guess the password repeatedly on the employee workstation and open all archived files there
  4. Keep only the subject line because encrypted attachments contain no usable forensic artifacts

Explanation

Correct Answer

A:

The raw message maintains encoded attachment bytes and metadata. Verified working copies enable safe inspection without altering the acquired source.

Incorrect Answers

B:

Uncontrolled distribution expands sensitive data exposure and malware execution risk without providing traceable custody or a reproducible analysis procedure.

C:

Executing unknown content on an affected user system risks further compromise and contaminates evidence; analysis should use approved isolated tooling.

D:

The message still carries attachment content, headers, hashes, and context relevant to attribution and scope even if decryption is initially unavailable.

Question 370

A suspect deleted working files shortly before a laptop was collected. The investigator needs to reconstruct file creation, rename, and deletion activity on an NTFS volume. Which artifact is a useful starting point?

  1. Review USB connection events alone without file-level read and write correlation
  2. The NTFS USN change journal correlated with MFT metadata and other timestamps
  3. An assumption that normal deletion always destroys all filesystem metadata
  4. An up-to-date file explorer listing with only surviving filenames

Explanation

Correct Answer

B:

The change journal and filesystem metadata can reveal relevant historical operations when still retained; neither alone proves that file contents were exfiltrated.

Incorrect Answers

A:

Device events show the removable medium was attached, but not necessarily which confidential file was accessed and copied during the user session.

C:

Deletion often leaves recoverable metadata or journal entries for a period, although retention, overwrites, and cleanup affect what survives.

D:

A current directory view omits many prior rename and deletion operations and is not sufficient to reconstruct historical file activity.

Certified SOC Analyst (312-39) Practice Tests