Dear Mahesh,
I suggest you to remove any personal data such your phone number from public places like this forum.
Anyone can see and use it for malicious activities such as spam, phishing and social engineering.
Neither I would ask in public to anyone to take remote of my server just like that.
Given the above approach to the IT security, I'm afraid, your company should review its internal security policies, the antivirus is not enough if basic security best practices are not applied.