Virus Classifications and Concealment Strategies
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Questions and Answers

What is the primary function of a worm?

  • To delete files on a system
  • To encrypt files on a system
  • To create backdoors on a system
  • To actively seek out more machines to infect (correct)

    • How do email worms typically spread?

  • Through script code included in email attachments (correct)
  • Through network vulnerabilities
  • Through infected media such as USB drives
  • Through instant messaging services

    • What is a common way for worms to replicate themselves?

  • By exploiting software vulnerabilities
  • By executing a copy of themselves on another system
  • By creating a copy of themselves on removable media (correct)
  • By modifying system files

    • What is a characteristic of a metamorphic virus?

    <p>It mutates and rewrites itself completely at each iteration</p> Signup and view all the answers

    What is the purpose of a payload in a worm?

    <p>To carry out malicious activities</p> Signup and view all the answers

    How do worms often target systems for infection?

    <p>Through software exploits</p> Signup and view all the answers

    What is a common way for worms to spread through networks?

    <p>Through network connections from system to system</p> Signup and view all the answers

    What is the first known implementation of a worm?

    <p>In the early 1980s at Xerox Palo Alto Labs</p> Signup and view all the answers

    What is a key characteristic that distinguishes a bot from a worm?

    <p>Remote control facility</p> Signup and view all the answers

    What is a common protocol used for covert communication channels in recent botnets?

    <p>HTTP</p> Signup and view all the answers

    What is the primary function of a keylogger?

    <p>To capture keystrokes</p> Signup and view all the answers

    What is the goal of a phishing attack?

    <p>To leverage user trust</p> Signup and view all the answers

    What is a characteristic of spear-phishing attacks?

    <p>Recipients are carefully researched</p> Signup and view all the answers

    What is a common way that malware is spread through email?

    <p>Through phishing attacks</p> Signup and view all the answers

    What is a common task performed by spyware?

    <p>Redirecting web page requests</p> Signup and view all the answers

    What is a primary difference between bots and worms in terms of propagation?

    <p>Worms are self-replicating, while bots are not</p> Signup and view all the answers

    How does the CommWarrior worm replicate to other phones?

    <p>By sending itself as an MMS file to contacts and as an auto reply to incoming text messages</p> Signup and view all the answers

    What is the primary target of mobile phone worms?

    <p>The smartphone's operating system</p> Signup and view all the answers

    How do drive-by-downloads deliver their payload?

    <p>By exploiting browser and plugin vulnerabilities</p> Signup and view all the answers

    What is the primary method of remote execution used by drive-by-downloads?

    <p>By exploiting vulnerabilities in the browser</p> Signup and view all the answers

    How do watering-hole attacks differ from drive-by-downloads?

    <p>They are more targeted and focused on specific organizations</p> Signup and view all the answers

    How do mobile phone worms spread through email?

    <p>They do not spread through email</p> Signup and view all the answers

    What is the primary goal of a watering-hole attack?

    <p>To target a specific organization or individual</p> Signup and view all the answers

    What is the primary difference between a drive-by-download and a watering-hole attack?

    <p>The target of the attack</p> Signup and view all the answers

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