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Difficulty: EasyMalware Types and Indicators of Compromise

A user downloads a free utility program from an unverified website. After executing the installer, the utility operates as advertised, but it secretly opens a backdoor to establish unauthorized remote access for an attacker. Which malware classification best describes this malicious software?

  1. TrojanAnswer
  2. B
    Worm
  3. C
    Logic bomb
  4. D
    Host-based firewall

Answer

Trojan
The correct answer is Trojan because this classification specifically refers to malicious code disguised as benign or useful software that requires user execution to deliver its payload.

Step-by-Step Solution

1
Analyze the infection vector described in the scenario
The user manually downloaded and executed a file disguised as a useful utility.
Trojans rely on social engineering and user execution under the guise of legitimate software.
2
Evaluate the hidden functionality of the program
The utility delivers a hidden covert backdoor while carrying out its advertised function.
This dual-nature behavior (beneficial appearance hiding malicious payloads) is the defining characteristic of a Trojan.

Key Concept

Trojan Malware Characteristics
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Topics

Malware Types and Indicators of Compromise

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