Resident Virus

Definition - What does Resident Virus mean?

A resident virus is a kind of computer virus that hides and stores itself within the computer memory, which then allows it to infect any file that is run by the computer, depending on the virus’ programming. A resident virus will load its replication module into memory so it does not need to be executed for it to infect other files, rather it activates whenever the operating system loads or operates a specific function. This virus may be one of the worst kinds as they can affect the system thoroughly even attaching itself to anti-virus applications which allows it to infect any file scanned by the program.

Techopedia explains Resident Virus

Resident viruses are in contrast to non-resident viruses, which are executable viruses meaning that they need to be executed before they can infect, unlike the resident virus that can execute whenever the OS loads. A resident virus has two types: fast infectors and slow infectors, which are both rather self-explanatory. Fast infectors do massive damage quickly, but are very easy to notice because of the effects, while slow infectors are able to spread more widely because they can go undetected for much longer.

Removal of such viruses can be a bit tricky since it has already embedded itself into the computer’s memory. It may even be designed to block the actions of antivirus programs. A special virus removal tool that can extract the virus from the memory is required in most cases. It may be in the form of an OS patch or updates to existing virus removal software. In worst cases, an expert needs to be called to remove the virus without performing a system wipe or reformatting of disks.

Share this:

Connect with us

Email Newsletter

Join thousands of others with our weekly newsletter

The 4th Era of IT Infrastructure: Superconverged Systems
The 4th Era of IT Infrastructure: Superconverged Systems:
Learn the benefits and limitations of the 3 generations of IT infrastructure – siloed, converged and hyperconverged – and discover how the 4th...
Approaches and Benefits of Network Virtualization
Approaches and Benefits of Network Virtualization:
Businesses today aspire to achieve a software-defined datacenter (SDDC) to enhance business agility and reduce operational complexity. However, the...
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.