1. Rootkit :
Rootkit is a set of application, a type of
malware that is designed to infect a target PC and allow an attacker to install a set of tools that grant him persistent remote access to the computer. The malware typically pretended itself as normal files that “hide in plain sight” so your antivirus software overlooks them. It enables administrator-level access to a computer or computer network. The motive is to steal the identity information from your computer, often to gain control of a system. It is difficult to detect and remove, requires the specialized tools to remove.
2. Virus :
A virus is a malicious executable code attached to another executable file which can be harmless or can modify or delete data. When the computer program runs attached with virus it perform some action such as deleting a file from the computer system. Virus can’t be controlled by remote.
Difference between Rootkit and Virus :