Autorun Details: YourMP3

Name: YourMP3
Command: rundll32.exe MSA64CHK.dll,DllMostrar
Status: Definitely not required. Usually Malware.
Description: MatrixDialer/Mostrar parasite. Note that rundll32.exe is a legitimate Microsoft file used to launch DLL file types and shouldn't be deleted. The "MSA64CHK.dll" file is located in %System%

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