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A Big thanks to you people, who have developed this product. My Windows XP Media Center OS was infected with Win32.Renos, Backdoor, XPAntivirus, Xta.kill trojans, spyware as I use rapidshare links a lot. I have licensed McAfee, which is good for nothing and was unable to protect my laptop from these malwares. I tried trial version of Bit Defender, Sunbelt Spyware, Claim Win, A-Squared, but they were unable to do a complete detection and removal of malwares. Exterminate listed all the malwares and registry changes done by them, like task manager, registry edit was disabled. I bought a single PC license, activated, scanned my system thrice and my system is now free from all malwares and viruses and running absolutely fine. I still have to use Mcafee as I have a licensed version but buying Exterminate IT is a worth of £20 spent on it. I will recommend this to everyone who use P2P sites or rapidshare or torrents. Now, I dont have to worry about any malware as I have Exterminate in my system.

Rajkumar P.

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Searched as:

opinstaller.msi
opinstaller
filetype:msi
msi.com malware
msi malware
windows\system32\opinstaller.msi
c:\windows\system32 msi "file system"
can i remove opinstaller.msi
syswow64 opinstaller.msi
filetype:msi a

opinstaller.msi

Location of opinstaller.msi and Associated Malware

Check whether opinstaller.msi is present in the following locations:

C:\WINDOWS\system32\opinstaller.msi

If you find opinstaller.msi in any of these locations, your computer is very likely to be infected with the following malware:

ActiveX Malware

Notes:

You can check if opinstaller.msi is associated with the malware listed above by running a Exterminate It! Free Scan.
You can easily remove all the files listed above with Exterminate It!.

IMPORTANT: Malware files can be camouflaged with the same file names as legitimate files. The opinstaller.msi file is associated with malware only if found in the locations listed above.

Different Variations of opinstaller.msi File

File Size	File Md5	Last Seen
1307136	5AF33D9ED6C12C04E67BD61CB3F25924	Jan 25, 2010
1251328	95816B4030E2B5854A00C611C49EA806	Feb 8, 2010
1776128	1B417D9F4B5A1A6EB247AD736551FD5A	Jul 22, 2010
2396672	0DB0F694280819E9F54D665AC66C08CA	Oct 17, 2010
2396672	4378B09B93DAB093DFD2D801B77C7040	Feb 11, 2011
1925120	DEFA685773063A974AA4BA5515976D53	Jun 25, 2011
2121728	A91404773B32B6CAA35DCA109B339385	Oct 11, 2011
2142208	F34F2C9C240492EC17726C2E45E7DAF3	Oct 22, 2011
1912320	40F388E935854D1ECFE98BAFF85B39C1	Oct 24, 2011
2120704	209A468A788A08856DF090B2A9ECA79F	Jan 23, 2012

Why Is It Important to Remove Malware Files?

It is imperative that you delete malware-associated files as soon as possible because they can be used - or are already being used - to inflict serious damage on your PC, including:

Disrupting the normal functioning of the operating system or rendering it completely useless.
Hijacking valuable private information (credit card numbers, passwords, PIN codes, etc.)
Directing all your Web searches to the same unwanted or malicious sites.
Dramatically slowing down your computer.
Gaining total control of your PC to spread viruses and trojans and send out spam.

How to Remove opinstaller.msi

To enable deleting the opinstaller.msi file, terminate the associated process in the Task Manager as follows:
- Right-click in the Windows taskbar (a bar that appears along the bottom of the Windows screen) and select Task Manager on the menu.
- In the Tasks Manager window, click the Processes tab.
- On the Processes tab, select opinstaller.msi and click End Process.
Using your file explorer, browse to the file using the paths listed in Location of opinstaller.msi and Associated Malware.
Select the file and press SHIFT+Delete on the keyboard.
Click Yes in the confirm deletion dialog box.
Repeat steps 2-4 for each location listed in Location of opinstaller.msi and Associated Malware.

Notes:

The deletion of opinstaller.msi will fail if it is locked; that is, it is in use by some application (Windows will display a corresponding message). For instructions on deleting locked files, see Deleting Locked Files.
The deletion of opinstaller.msi will fail if your Windows uses the NT File System (NTFS) and you have no write rights for the file. Request your system administrator to grant you write rights for the file.

Delete opinstaller.msi Automatically.

Deleting Locked Files

You can delete locked files with the RemoveOnReboot utility. You can install the RemoveOnReboot utility from here.

After you delete a locked file, you need to delete all the references to the file in Windows registry.

To delete a locked file:

Right-click on the file and select Send To -> Remove on Next Reboot on the menu.
Restart your computer.

The file will be deleted on restart.

Note: In the case of complex viruses that can replicate themselves, malware files can reappear in the same locations even after you have deleted those files and restarted your computer. Exterminate It! can effectively eradicate such viruses from your computer.

To remove all registry references to a malware file:

On the Windows Start menu, click Run.
In the Open box, type regedit and click OK. The Registry Editor window opens.
On the Edit menu, select Find.
In the Find dialog box, type FILENAME. The name of the first found registry value referencing opinstaller.msi is highlighted in the right pane of the Registry Editor window.
Right-click the registry value name and select Delete on the menu.
Click Yes in the Confirm Value Delete dialog box.
To delete all other references to opinstaller.msi, repeat steps 4-6.

IMPORTANT: Malware files can masquerade as legitimate files by using the same file names. To avoid deleting a harmless file, ensure that the Value column for the registry value displays exactly one of the paths listed in Location of opinstaller.msi and Associated Malware.

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