CCNP Security 350-701 Release Date

The W32/AutoRun worm is a type of malware that spreads through removable drives, such as USB flash drives, and modifies the autorun.inf file to execute itself when the drive is inserted. The worm also attempts to connect to a remote server and download additional malicious files. One of the features of this worm is that it generates random domain names based on the current date and time, and sends DNS requests to these domains. This is a technique to evade detection and analysis, as well as to communicate with the command and control server. The DNS requests generated by the worm have a distinctive pattern, such as the length of the domain name, the number of subdomains, and the use of redacted characters. By comparing these features to the expected behavior of normal DNS requests, security analysts can identify the presence of the worm and block its traffic. References :=

Some possible references are:

• W32/AutoRun worm
• DNS requests malicious attack
• Four major DNS attack types and how to mitigate them

Cross-site scripting (XSS) is the method of attack that is used by a hacker to send malicious code through a web application to an unsuspecting user to request that the victim’s web browser executes the code. XSS is a type of injection attack that exploits the lack of input validation or output encoding in a web application. An attacker can craft a malicious script and embed it in a web page or a URL that is sent to the user. When the user visits the web page or clicks the URL, the script is executed by the user’s browser, which may not be able to distinguish it from legitimate code. The script can then perform various actions, such as stealing cookies, session tokens, or other sensitive information, redirecting the user to a malicious site, or performing actions on behalf of the user12. The other options are not correct, because they are not methods of attack that use web applications to execute malicious code on the user’s browser. Buffer overflow is a type of attack that exploits a memory vulnerability in a program or system, where an attacker can overwrite the memory beyond the allocated buffer and execute arbitrary code3. Browser WGET is a command-line tool that can be used to download files from the web, but it is not an attack method by itself4. SQL injection is a type of attack that exploits a database vulnerability in a web application, where an attacker can inject malicious SQL statements into a user input field and execute them on the database server5. References:

• 1: What is Cross-Site Scripting (XSS)? - Cisco
• 2: Cross-Site Scripting (XSS) - OWASP
• 3: What is a Buffer Overflow? - Cisco
• 4: GNU Wget 1.21.1 Manual
• 5: What is SQL Injection (SQLi)? - Cisco

 The process that uses STIX and allows uploads and downloads of block lists is sharing. STIX (Structured Threat Information Expression) is a standard language and format for exchanging cyber threat intelligence data. Block lists are collections of observables, such as IP addresses, URLs, or domains, that are associated with malicious activity and can be used to block or monitor network traffic. Cisco Threat Intelligence Director (TID) is a feature that operationalizes threat intelligence data by consuming, normalizing, publishing, and correlating data from various sources, including third-party STIX feeds. TID enables the administrator to upload STIX files from local or remote sources, or download STIX files from the Firepower Management Center (FMC) to share with other systems. TID also allows the administrator to configure actions (such as block or monitor) based on the indicators and observables in the STIX files, and generate incidents and observations when the system detects traffic that matches the threat intelligence data123

References := 1: Firepower Management Center Configuration Guide, Version 6.2.3 - Threat Intelligence Director 2 2: Introduction to STIX - GitHub Pages 4 3: Third-Party Integration of Security Feeds with FMC (Cisco Threat Intelligence Director) - Cisco Community 3

Cisco Stealthwatch Cloud is a cloud-delivered and SaaS-based solution that provides visibility and threat detection across the AWS network. It does not require any software agents to be installed on the AWS instances, and it relies on AWS VPC flow logs to collect network traffic metadata. Cisco Stealthwatch Cloud analyzes the flow logs using machine learning and behavioral modeling to detect anomalies and threats, such as data exfiltration, lateral movement, reconnaissance, and compromised instances. Cisco Stealthwatch Cloud also provides contextual information and actionable alerts to help users respond to incidents and remediate issues.

Cisco Umbrella is a cloud-delivered and SaaS-based solution that provides DNS-layer security and web filtering for internet traffic. It does not provide visibility and threat detection for internal AWS network traffic, and it requires software agents to be installed on the endpoints or network devices to enforce policies and redirect DNS requests.

NetFlow collectors are devices or software applications that collect and analyze NetFlow records, which are generated by network devices to capture information about IP traffic flows. NetFlow collectors can provide visibility and threat detection for network traffic, but they are not cloud-delivered or SaaS-based solutions. They also require NetFlow exporters to be configured on the network devices, which may not be supported by AWS.

Cisco Cloudlock is a cloud-delivered and SaaS-based solution that provides cloud security posture management (CSPM) and cloud access security broker (CASB) capabilities for cloud applications and environments. It does not provide visibility and threat detection for AWS network traffic, and it does not rely on AWS VPC flow logs. It focuses on protecting cloud data, users, and configurations from misconfigurations, compliance violations, and malicious activities. References :=

• Cisco Stealthwatch Cloud for AWS
• Cisco Umbrella
• NetFlow
• [Cisco Cloudlock]