What is the PUP.Optional.ExpressInstall.A virus?

PUP.Optional.ExpressInstall.A is a malicious threat that can be regarded as a potentially unwanted program and detected by Malwarebytes Anti-Malware. It gets installed without any permission and then it can keep performing bad behavior on your computer to interrupt your browsing activities. Generally speaking, it comes after you install a freeware software like video recording/streaming, download-managers or PDF creators. This unwanted threat is bundled into this program or software to get access to your computer. Usually it won’t come alone, it always comes along with other threats such as PUP.Optional.Toolbarwid or PUP.Optional.NetLiker.A. When it is installed, it may be used to track user’s web browsing habits, record addresses of visited sites and send collected data to a remote server.

Being as a fatal threat, this parasite can compromise your system and may introduce additional infections Ransomware or like rogue software to install on the infected machine. Once it gains an access, it will apply an advance technique that aims to conceal itself and evades anti-virus detection. Thus, most security product are not able to detect this threats. PUP.Optional.ExpressInstall.A virus can be detected by Malwarebytes Anti-Malware, however, the removal is really a headache for PC users because this virus can keep coming back. The first thing it will do on your computer is to drop huge amount of junk files into the infected computer to occupy system resource. So you will find computer extremely slow and sluggish. It takes longer than usual to do anything during your browsing session. In addition, it may take over the affected web browser and lead to annoying redirects to doubtful websites. You may find that constant pop-up ads displayed on the screen randomly, asking you to click and get coupon or install add-ons or plug-ins. Sometimes a toolbar will be added on your browser and will not allow you to delete it. Everything on your computer will be fully messed up once your computer has been infected with such kind of threats. It may freeze or crash your computer randomly since this virus is able to mess up your system files once it is installed. Therefore, don’t hesitate to get rid of PUP.Optional.ExpressInstall.A virus once it is found.

Infected Symptoms Are Listed Below:

It can bypass the legit security tools and destroy your computer secretly.
It prevents you from opening some application because the files are corrupted.
It can make your browser redirected to all kinds of malicious websites.
It is able to allow remote hacker access the compromised system for illicit purpose.

How Do You Get PUP.Optional.ExpressInstall.A Virus?

From malicious drive-by-download scripts from corrupted porn and shareware / freeware websites.
Through spam email attachments, media downloads and social networks.
When clicking suspicious pop-ups or malicious links.
Open unknown email or download media files that contain the activation code of the virus.

Note: No matter how does the virus access your PC, users should know that there are no tools can remove this pesky Trojan automatically at this moment, it is suggested users not spend much time in downloading or paying any security software which claims can delete this stubborn virus. It is totally useless. To completely get rid of PUP.Optional.ExpressInstall.A virus, professional manual guide is needed.