Summary

Summary
Action
More Information
| How it spreads |
|
|---|---|
| Affected operating systems | Windows |
| Characteristics |
|
| 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

Summary
Action
More Information
Please follow the instructions for disinfecting macro viruses.
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.
