Is MsiExec.exe a malicious script?

June 19, 2010 at 13:16:36
Specs: N/A
Okay before I start, I'm a bit of a computer dunce! When my computer starts up I get a message from Norton security, it pops up saying that MsiExec.exe is a malicious script and recommends that I "stop this script", which I do. However, my computer (which is Windows XP) is running sooo slow, it took about half an hour for my firefox explorer to appear after I clicked it and even then it freezes for a while before I can do anything and I give up completely (I'm writing this from my phone so big apologies for the giant paragraph!), plus after some time I get that "virtual memory is running low" and I'm sure it's a virus. PLEASE help me get rid of it! and if you can please keep the jargon simple I'd be forever grateful haha.

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June 19, 2010 at 14:38:01
Hi there ,

As you say your computer takes too much time for opening a single + running out of virtual memory then its time to take backup of your data and use the cds that comes with your system to factory defualt or if you dont have cds then visit any local computer shop for help.

Best of luck

Imran Khan

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June 21, 2010 at 21:38:37
msiexec.exe belongs to the Windows Installer Component and is used to install new programs that use Windows Installer package files (MSI). This program is important for the stable and secure running of your computer and should not be terminated. Run a FREE registry scan to identify msiexec.exe related errors.

Kristain Hayes

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October 10, 2010 at 07:53:41
The real "Msiexec.exe" is the executable for the windows installer. If it is deleted, you won't be able to add new software to your computer.

However, there is this spoofed file (fake misexec.exe) that is carrying the same file name as the installer component on windows. This is the bad one, and is the one being detected as malicious exe by some antivirus. Some---because not all antivirus detects it as harmful, like AVG and symantec won't pick this up.

So how will you know if it's the real or genuine one? The real misexec.exe should only be running while you're installing something. It's also a Windows System File and should be in a system directory. In addition, it should have an installer-like icon. If it is, then this application is safe. You can know more about characteristics of malicious programs here.

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