Your friend plans to install a Trojan on your computer. He knows that if he gives you a new version of chess.exe, you will definitely install the game on your computer. He picks up a Trojan and…

NetBus is a Remote Access Trojan that provides the attacker with covert backdoor control of the victim's machine once executed, serving as the malicious payload in this binding scenario.

Absinthe is an automated blind SQL injection exploitation tool used against databases and plays no role in binding or delivering Trojan payloads via file bundling.

Yet Another Binder (YAB) is a file-binding tool designed specifically to combine two or more executables into a single file, enabling the Trojan to be silently embedded inside chess.exe.

chess.exe is the legitimate carrier file; it is required because it acts as the decoy that motivates the victim to willingly execute the combined file, unknowingly triggering the embedded Trojan.