A file infector virus attaches itself to executable programs, such as word processors, spreadsheet applications, and computer games. The virus is installed when the code is loaded or executed. When the virus has infected a program, it propagates to infect other programs on the system, as well as other systems that use a shared infected program. Most common are .exe extension files.
File infectors can cause significant damage by corrupting files, disrupting system functionality, and facilitating the spread of malware.
Here are some key characteristics of file infectors:
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Replication: File infectors have the ability to replicate themselves by infecting other executable files on a system or network. When an infected file is executed, the virus code activates and searches for other executable files to infect, spreading the infection further.
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Code Modification: File infectors modify the host files by inserting their own code into specific sections or appending it to the end of the file. This code allows the virus to execute when the infected file is run, initiating the replication process.
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Stealth Techniques: File infectors often employ stealth techniques to avoid detection and removal. They may use encryption or obfuscation methods to hide their presence and make it difficult for antivirus software to identify and remove them.
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Payloads: While the primary goal of file infectors is to spread and infect other files, they can also carry additional payloads. These payloads can include destructive actions, data theft, or launching other types of malware or attacks on the infected system.
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Persistence: File infectors aim to maintain persistence on infected systems by ensuring that their code continues to execute each time the infected file is run. This allows them to remain active and continue spreading to other files over an extended period.
