Palo Alto Networks Cybersecurity-Practitioner Exam Questions

An Intrusion Prevention System (IPS) includes automated security actions, such as blocking malicious traffic, resetting connections, or alerting administrators when it detects suspicious activity, helping to stop attacks in real time.

Morphing code, also known as polymorphism, allows advanced malware to change its code structure with each iteration or infection. This makes it extremely difficult for traditional signature-based detection tools to recognize and block the malware consistently.

An encoded string is a common technique used by attackers to obfuscate their malicious code or data. By decoding the string, a security operations engineer can reveal the true nature and intent of the attacker, and potentially discover indicators of compromise (IOCs) such as IP addresses, domain names, file names, etc. Decoding the string can also help the engineer to determine the type and severity of the incident, and the appropriate response actions. Therefore, decoding the string and continuing the investigation is the best option among the given choices. Saving the string to a new file and running it in a sandbox may be risky, as it could execute the malicious code and cause further damage. Running the string against VirusTotal may not yield any useful results, as the string may not be recognized by any antivirus engines. Appending the string to the investigation notes but not altering it may not provide any additional insight into the incident, and may delay the response process.Reference:

1: SANS Digital Forensics and Incident Response Blog | Strings, Strings, Are Wonderful Things

2: 5 Minute Forensics: Decoding PowerShell Payloads - Tevora

3: Known plaintext analysis of encoded strings - SANS Institute

4: Palo Alto Networks Certified Cybersecurity Entry-level Technician - Palo Alto Networks

5: 10 Palo Alto Networks PCCET Exam Practice Questions - CBT Nuggets

When you enable URL Filtering, all web traffic is compared against the URL Filtering database, PAN-DB, which contains millions of URLs that have been grouped into about 65 categories.

Signature-based antivirus software is a type of security software that uses signatures to identify malware. Signatures are bits of code that are unique to a specific piece of malware.When signature-based antivirus software detects a piece of malware, it compares the signature to its database of known signatures12. If a match is found, the software can do three things to provide protection:

Alert system administrators: The software can notify the system administrators or the users about the malware detection, and provide information such as the name, type, location, and severity of the malware.This can help the administrators or the users to take appropriate actions to prevent further damage or infection3.

Quarantine the infected file: The software can isolate the infected file from the rest of the system, and prevent it from accessing or modifying any other files or processes.This can help to contain the malware and limit its impact on the system4.

Delete the infected file: The software can remove the infected file from the system, and prevent it from running or spreading.This can help to eliminate the malware and restore the system to a clean state4.

:

What is a signature-based antivirus? - Info Exchange

What is a Signature and How Can I detect it? - Sophos

How Does Heuristic Analysis Antivirus Software Work?

What Is Signature-based Malware Detection? | RiskXchange