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一个扫描ASP木马的VBS脚本

减小字体 增大字体 作者:佚名  来源:本站整理  发布时间:2008-4-5 0:09:02

'-----------------------
'Scan ASP WebShell in vbs
'Author: lake2 (http://lake2.0x54.org)
'Date:   2006-11-30
'Version: 1.0 Beta
'-----------------------

DimFileExt = "asp,cer,asa,cdx"
Dim Report, Report2, Sun, SumFiles, SumFolders

Call ShowInfo()
If WScript.Arguments.Count = 2 Then
 Call CheckArg()
 Sun = 0
 SumFiles = 0
 SumFolders = 1
 If Right(WScript.Arguments.Item(0),1) = "\" Then
  thePath = Mid(WScript.Arguments.Item(0),1,Len(WScript.Arguments.Item(0))-1)
 Else
  thePath = WScript.Arguments.Item(0)
 End If
 WScript.Echo "开始扫描,请稍候……"
 WScript.Sleep(1000)
 StartTime = now()
 Call ShowAllFile(thePath)
 EndTime = now()
 WScript.Echo vbcrlf & "扫描完成!" & vbcrlf
 report2 = report2 & "<html><head><title>雷客图 ASP 站长安全助手vbs版扫描报告</title>"
 report2 = report2 & "<meta http-equiv=""Content-Type"" content=""text/html; charset=gb2312""></head>"
 report2 = report2 & "<body><b><font size=4>雷客图 ASP 站长安全助手vbs版扫描报告</font></b><br><br>"
 report2 = report2 & "<body><font size=2>开始时间:"&StartTime&"</font><br>"
 report2 = report2 & "<body><font size=2>结束时间:"&EndTime&"</font><br>"
 report2 = report2 & "<font size=2>扫描完毕!一共检查文件夹<font color=""#FF0000"">"&SumFolders&"</font>个,文件<font color=""#FF0000"">"&SumFiles&"</font>个,发现可疑点<font color=""#FF0000"">"&Sun&"</font>个(<font color=""#FF0000"">红字</font>显示的为严重可疑)</font><br/>"
 report2 = report2 & "<table width=""100%"" border=""0"" style=""padding:5px;line-height:170%;clear:both;font-size:12px;word-break:break-all"">"
 report2 = report2 & "<tr>"
 report2 = report2 & "<td width=""20%"">文件路径</td>"
 report2 = report2 & "<td width=""20%"">特征码</td>"
 report2 = report2 & "<td width=""40%"">描述</td>"
 report2 = report2 & "<td width=""20%"">创建/修改时间</td>"
 report2 = report2 & "</tr>"
 report2 = report2 & "<p>"
 report2 = report2 & report
 report2 = report2 & "</p>"
 report2 = report2 & "</table><hr><script src=http://www.0x54.org/announce.js></script>"
 report2 = report2 & "<div align=center>powered by <a href=""http://www.0x54.org"" target=_blank>0x54.org</a></div>"
 report2 = report2 & "</body></html>"
 Call WriteToFile()
Else
 Call ShowHelp()
End If

Sub ShowInfo()
 HelpStr = HelpStr & "==============================" & vbcrlf
 HelpStr = HelpStr & "=====  欢迎使用雷客图 ASP 站长安全助手vbs版  =====" & vbcrlf
 HelpStr = HelpStr & "=====           Author: lake2                =====" & vbcrlf
 HelpStr = HelpStr & "=====       Email:lake2@mail.csdn.net        =====" & vbcrlf
 HelpStr = HelpStr & "=====   欢迎访问 www.0x54.org 得到更多信息   =====" & vbcrlf
 HelpStr = HelpStr & "==============================" & vbcrlf
 HelpStr = HelpStr & vbcrlf
 WScript.Echo HelpStr
End Sub

Sub ShowHelp()
 HelpStr = HelpStr & "#用法: CScript scan.vbs [扫描路径] [结果HTM文件路径]" & vbcrlf
 HelpStr = HelpStr & "#例子: CScript scan.vbs d:\Web f:\my\report.html" & vbcrlf
 HelpStr = HelpStr & vbcrlf
 WScript.Echo HelpStr
End Sub

Sub CheckArg()
 tmpPath = Left(WScript.Arguments.Item(1), InStrRev(WScript.Arguments.Item(1),"\")-1)
 Set objFSO = WScript.CreateObject ("Scripting.FileSystemObject")
 If Not objFSO.FolderExists(WScript.Arguments.Item(0)) Then
  WScript.Echo "Error:错误的路径“" & WScript.Arguments.Item(0) & "”!"
  WScript.Quit
 ElseIf Not objFSO.FolderExists(tmpPath) Then
  WScript.Echo "Error:错误的文件路径“" & tmpPath & "”!"
  WScript.Quit 
 End If
 Set objFSO = Nothing
End Sub

'遍历处理path及其子目录所有文件
Sub ShowAllFile(Path)
 WScript.Echo "正在检查目录" & path
 Set FSO = CreateObject("Scripting.FileSystemObject")
 Set f = FSO.GetFolder(Path)
 Set fc2 = f.files
 For Each myfile in fc2
  If CheckExt(FSO.GetExtensionName(path&"\"&myfile.name)) Then
   'WScript.Echo "正在检查文件" & path&"\"&myfile.name
   Call ScanFile(Path&Temp&"\"&myfile.name, "")
   SumFiles = SumFiles + 1
  End If
 Next
 Set fc = f.SubFolders
 For Each f1 in fc
  ShowAllFile path&"\"&f1.name
  SumFolders = SumFolders + 1
     Next
 Set FSO = Nothing
End Sub

'检查文件后缀,如果与预定的匹配即返回TRUE
Function CheckExt(FileExt)
 If DimFileExt = "*" Then CheckExt = True
 Ext = Split(DimFileExt,",")
 For i = 0 To Ubound(Ext)
  If Lcase(FileExt) = Ext(i) Then
   CheckExt = True
   Exit Function
  End If
 Next
End Function

'检测文件
Sub ScanFile(FilePath, InFile)
 If InFile <> "" Then
  Infiles = "<font color=red>该文件被"& InFile & "文件包含执行</font>"
 End If
 temp = FilePath
 On Error Resume Next
 Set tStream = WScript.CreateObject("ADODB.Stream")
 tStream.type = 1
 tStream.mode = 3
 tStream.open
 tStream.Position=0
 tStream.LoadFromFile FilePath
 If err Then Exit Sub end if
 tStream.type = 2
 tStream.charset = "GB2312"
 Do Until tStream.EOS
  filetxt = filetxt & LCase(replace(tStream.ReadText(102400), Chr(0), ""))
 Loop
 tStream.close()
 Set tStream = Nothing

 Set FSOs = WScript.CreateObject("Scripting.FileSystemObject") 
 if len(filetxt) >0 then
  '特征码检查
  filetxt = vbcrlf & filetxt
   'Check "WScr"&DoMyBest&"ipt.Shell"
   If Instr( filetxt, Lcase("WScr"&DoMyBest&"ipt.Shell") ) or Instr( filetxt, Lcase("clsid:72C24DD5-D70A"&DoMyBest&"-438B-8A42-98424B88AFB8") ) then
    Report = Report&"<tr><td>"&temp&"</td><td>WScr"&DoMyBest&"ipt.Shell 或者 clsid:72C24DD5-D70A"&DoMyBest&"-438B-8A42-98424B88AFB8</td><td><font color=red>危险组件,一般被ASP木马利用</font>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End if
   'Check "She"&DoMyBest&"ll.Application"
   If Instr( filetxt, Lcase("She"&DoMyBest&"ll.Application") ) or Instr( filetxt, Lcase("clsid:13709620-C27"&DoMyBest&"9-11CE-A49E-444553540000") ) then
    Report = Report&"<tr><td>"&temp&"</td><td>She"&DoMyBest&"ll.Application 或者 clsid:13709620-C27"&DoMyBest&"9-11CE-A49E-444553540000</td><td><font color=red>危险组件,一般被ASP木马利用</font>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check Unicode
   If instr( filetxt, chr(-22048)) then
    Report = Report&"<tr><td>"&temp&"</td><td>无</td><td><font color=red>使用 Unicode 编码 ASP 代码</font>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .Encode
   Set regEx = New RegExp
   regEx.IgnoreCase = True
   regEx.Global = True
   regEx.Pattern = "\bLANGUAGE\s*=\s*[""]?\s*(vbscript|jscript|javascript).encode\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>(vbscript|jscript|javascript).Encode</td><td><font color=red>似乎脚本被加密了,一般ASP文件是不会加密的</font>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check my ASP backdoor :(
   regEx.Pattern = "\bEv"&"al\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>Ev"&"al</td><td>e"&"val()函数可以执行任意ASP代码,被一些后门利用。其形式一般是:ev"&"al(X)<br>但是javascript代码中也可以使用,有可能是误报。"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check exe&cute backdoor
   regEx.Pattern = "[^.]\bExe"&"cute\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>Exec"&"ute</td><td><font color=red>e"&"xecute()函数可以执行任意ASP代码,被一些后门利用。其形式一般是:ex"&"ecute(X)</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .(Open|Create)TextFile
   regEx.Pattern = "\.(Open|Create)TextFile\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.Crea"&"teTextFile|.O"&"penTextFile</td><td>使用了FSO的CreateTextFile|OpenTextFile函数读写文件"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .SaveT&oFile
   regEx.Pattern = "\.SaveT"&"oFile\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.Sa"&"veToFile</td><td>使用了Stream或者JMail的SaveToFile函数写文件"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .&Save
   regEx.Pattern = "\.Sa"&"ve\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.Sa"&"ve</td><td>使用了XMLHTTP的Save函数写文件"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check set Server
   regEx.Pattern = "set\s*.*\s*=\s*server\s"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>Set xxx=Se"&"rver</td><td><font color=red>发现Set xxx=Ser" & jj & "ver,请管理员仔细检查是否调用.execute</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check Server.(Transfer|Ex&ecute)
   regEx.Pattern = "Server.(Ex"&"ecute|Transfer)([ \t]*|\()[^""]\)"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>Server.Ex"&"ecute</td><td><font color=red>不能跟踪检查Server.e"&"xecute()函数执行的文件。请管理员自行检查</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .Ru&n
   regEx.Pattern = "\.R"&"un\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.Ru"&"n</td><td><font color=red>发现 WScript 的 Run 函数</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .Exe&c
   regEx.Pattern = "\.Ex"&"ec\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.Ex"&"ec</td><td><font color=red>发现 WScript 的 Exec 函数</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   'Check .Shel&lExecute
   regEx.Pattern = "\.Shel"&"lExecute\b"
   If regEx.Test(filetxt) Then
    Report = Report&"<tr><td>"&temp&"</td><td>.ShellE"&"xecute</td><td><font color=red>发现 Application 的 ShellExecute 函数</font><br>"&infiles&"</td><td>"&GetDateCreate(filepath)&"<br>"&GetDateModify(filepath)&"</td></tr>"
    Sun = Sun + 1
   End If
   Set regEx = Nothing

  
  'Check include file not with "&'
  Set regEx = New RegExp
  regEx.IgnoreCase = True
  regEx.Global = True
  regEx.Pattern = "<!--\s*#include\s+(file|virtual)\s*=\s*.*-->"
  Set Matches = regEx.Execute(filetxt)
  For Each Match in Matches
   tFile = Replace(Trim(Mid(Match.Value, Instr(Match.Value, "=") + 1, Len(Match.Value) - Instr(Match.Value, "=") - 1)),"/","\")
   If Left(tFile, 1)="'" Then
    tFile = Mid(tFile, 2, InStr(2, tFile, "'", 1) - 2)
   ElseIf Left(tFile, 1)="""" Then
    tFile = Mid(tFile, 2, InStr(2, tFile, """", 1) - 2)
   Else
    tFile = Replace(tFile, Chr(9), " ")
    If InStr(tFile, " ") <> 0 Then
     tFile = Left(tFile, InStr( tFile, " ") - 1)
    Else
     tFile = Left(tFile, InStr( tFile, "-") - 1)
    End If
   End If
   If Not CheckExt(FSOs.GetExtensionName(tFile)) Then
    Call ScanFile( Mid(FilePath,1,InStrRev(FilePath,"\"))&tFile, FilePath)
    SumFiles = SumFiles + 1
   End If
  Next
  Set Matches = Nothing
  Set regEx = Nothing
    
  'Check Server&.Execute|Transfer
  Set regEx = New RegExp
  regEx.IgnoreCase = True
  regEx.Global = True
  regEx.Pattern = "Server.(Exec"&"ute|Transfer)([ \t]*|\()"".*?"""
  Set Matches = regEx.Execute(filetxt)
  For Each Match in Matches
   tFile = Replace(Mid(Match.Value, Instr(Match.Value, """") + 1, Len(Match.Value) - Instr(Match.Value, """") - 1),"/","\")
   If Not CheckExt(FSOs.GetExtensionName(tFile)) Then
    Call ScanFile( Mid(FilePath,1,InStrRev(FilePath,"\"))&tFile, FilePath)
    SumFiles = SumFiles + 1
   End If
  Next
  Set Matches = Nothing
  Set regEx = Nothing
   
  'Check RunatScript
  Set XregEx = New RegExp
  XregEx.IgnoreCase = True
  XregEx.Global = True
  XregEx.Pattern = "<scr"&"ipt\s*(.|\n)*?runat\s*=\s*""?server""?(.|\n)*?>"
  Set XMatches = XregEx.Execute(filetxt)
  For Each Match in XMatches
   tmpLake2 = Mid(Match.Value, 1, InStr(Match.Value, ">"))
   srcSeek = InStr(1, tmpLake2, "src", 1)
   If srcSeek > 0 Then
    srcSeek2 = instr(srcSeek, tmpLake2, "=")
    For i = 1 To 50
     tmp = Mid(tmpLake2, srcSeek2 + i, 1)
     If tmp <> " " and tmp <> chr(9) and tmp <> vbCrLf Then
      Exit For
     End If
    Next
    If tmp = """" Then
     tmpName = Mid(tmpLake2, srcSeek2 + i + 1, Instr(srcSeek2 + i + 1, tmpLake2, """") - srcSeek2 - i - 1)
    Else
     If InStr(srcSeek2 + i + 1, tmpLake2, " ") > 0 Then tmpName = Mid(tmpLake2, srcSeek2 + i, Instr(srcSeek2 + i + 1, tmpLake2, " ") - srcSeek2 - i) Else tmpName = tmpLake2
     If InStr(tmpName, chr(9)) > 0 Then tmpName = Mid(tmpName, 1, Instr(1, tmpName, chr(9)) - 1)
     If InStr(tmpName, vbCrLf) > 0 Then tmpName = Mid(tmpName, 1, Instr(1, tmpName, vbcrlf) - 1)
     If InStr(tmpName, ">") > 0 Then tmpName = Mid(tmpName, 1, Instr(1, tmpName, ">") - 1)
    End If
    Call ScanFile( Mid(FilePath,1,InStrRev(FilePath,"\"))&tmpName , FilePath)
    SumFiles = SumFiles + 1
   End If
  Next
  Set Matches = Nothing
  Set regEx = Nothing

 end if
  set fsos = nothing

End Sub

Function GetDateModify(filepath)
 Set fso = CreateObject("Scripting.FileSystemObject")
     Set f = fso.GetFile(filepath)
 s = f.DateLastModified
 set f = nothing
 set fso = nothing
 GetDateModify = s
End Function

Function GetDateCreate(filepath)
 Set fso = CreateObject("Scripting.FileSystemObject")
     Set f = fso.GetFile(filepath)
 s = f.DateCreated
 set f = nothing
 set fso = nothing
 GetDateCreate = s
End Function

Sub WriteToFile()
 Set FSO = CreateObject("Scripting.FileSystemObject")
 Set theFile = FSO.OpenTextFile(WScript.Arguments.Item(1), 2, True)
 theFile.Write(Report2)
 theFile.Close
 Set FSO = Nothing
 WScript.Echo "扫描结果已经写入文件“"&WScript.Arguments.Item(1)&"”,请查看之!"
End Sub