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Name msa32chk.dll


An ActiveX installer control for premium-rate phone diallers, distributed by Spanish company Matrix Technology Network SA.
Also known as Msa32chk, or LanzarDLL, after filenames used by the software.

Installed by ActiveX drive-by-download on porn pages.
It doesn't advertising or privacy violation.
Critical security issues: Any HTML page can direct the ActiveX control to download and run arbitrary, unsigned executable code from any server.

Automatical removal:
Use antivirus (also check How To Remove section)Startup Optimizer to remove it from the system registry.

Manual removal:
Delete the entry called 'Dialer', which uses rundll32.exe to run msa32chk.dll.
Find the key HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Extensions
and delete the subkey {03FBB191-FB50-4154-91D7-587D5E3C0000}.

You can also delete MSA32CHK.DLL from the System folder.

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