Sophos

XM97/Yini-A

Aliases
  • Virus.MSExcel.Yini.a
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Infected files
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Included in our products from May 2005 (3.93)
Protection available since 28 March 2005 16:00:41 (GMT)
Last updated 28 March 2005 17:18:26 (GMT)
Detected by All Sophos products

Action

More Information

XM97/Yini-A is a Microsoft Excel macro virus.

XM97/Yini-A drops a copy of itself to C:\windows\system\HappyBirthday and drops the file yinyin3345.vbs in the <Windows>\ShellNew\Software folder. This is a Visual Basic script file which drops the file yinyin3345.xls in the XLSTART folder which ensures that the virus is run when Excel starts.

XM97/Yini-A creates the following registry entry to run the Visual Basic Script on system logon or startup:

HKLM\Software\Microsoft\Windows\CurrentVersion\Run
internet.exe
<Windows>\ShellNew\Software\yinyin3345.vbs

On the 4th of November or any Thursday XM97/Yini-A will remove the Visual Basic Script and display a message box.

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