Antivirus Soft is a rogue anti-spyware and ransomware program from the same family as Antispyware Soft. Once running it will scan your computer and display numerous infections, but will state it will not remove them until you purchase the program. In reality, the infected files it detects are all fake and do not actually exist on your computer. This program also uses aggressive techniques to protect itself from being removed by anti-malware programs. If you already have purchased this program, please contact your credit card company and dispute the charges stating the program is a scam. To remove this infection please use the removal guide below to remove it for free.
Source: https://www.bleepingcomputer.com/virus-removal/remove-antivirus-soft