Also, I infected the computer with several types of Trojans such as Trojan dropper, agent and password stealer. The test system in this article is infected with a TDSS rootkit which can cause a Google redirect virus infection. Allowing the antivirus program to scan the system to remove the rootkits will fail. The image at the left (click to enlarge) is an example of a rootkit detection by Avast. If you received an alert that there is rootkit infection on your computer, but Avast couldn’t remove it using its on-demand or real-time detection and removal engine, the only way to get rid of the infection is by using boot-time scan in Avast.

There’s no need to create a bootable malware removal tool in using the boot-time scanner. Also, there are rogue antivirus programs that may prevent some antivirus and anti-malware scanners to do their job – to scan, detect and remove the fake AVs.īoot-time scan in Avast does not require advanced knowledge because Avast Software, the maker of Avast antivirus software, has integrated the boot-time scan feature within the program. Boot-time scanning in Avast helps in removing active but hidden malware infections. Why Use Avast Boot-Time Scan?Īvast is able to detect rootkit infections and some malware, but removal requires a sophisticated malware removal engine. It’s easy to use the boot-time scanner as the Avast removal tool rids your PC of nasty infections, especially from malware that loads even before the Windows logon or desktop has started. It checks the boot-sector for viruses, worms, Trojans, spyware, rootkits, adware, potentially unwanted programs (PUPs), and other types of malicious software. Boot-time scanning in Avast scans all hard-disks or only the system drive. Avast boot-time scanner is one of the great features in the Avast antivirus program.

How to avast boot scan