How To Write A Basic Keylogger In VB

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How To Write A Basic Keylogger In VB

25 May 2008 6 Comments

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Intro: What a Keylogger is made of

Before we start programming, we need to answer a basic question: what is a keylogger? As the name implies (key+logger) - a keylogger is a computer program that logs (records) the keys (keyboard buttons) pressed by a user. This should be simple to understand. Lets say that I am doing something at my computer. A keylogger is also running (working) on this computer. This would mean that the keylogger is “listening” to all the keys I am pressing and it is writing all the keys to a log file of some sort. Also, as one might have guessed already, we don’t want the user to know that their keys are being logged. So this would mean that our keylogger should work relatively stealth and must not, in any case, show its presence to the user. Good, now we know what a keylogger as and we have an idea of its functions, lets move on to the next step.

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Basic Concepts: What needs to be achieved
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Ok, now lets plan our program, what should such keyloger do and what it should not. Significant difference to previous section is in the sense that here we shall discuss the LOGIC, the instructions that our program will follow.
Keylogger will:
1 - listen to all the key strokes of the user.
2 - save these keys in a log file.
3 - during logging, does not reveal its presence to the user.
4 - keeps doing its work as long as the used is logged on regardless of users actions.

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Implementation: Converting logic into code
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We shall use Visual Basic because it is much easier and simple to understand comparing to C++ or Java as far as novice audience is concerned. Although programmers consider it somewhat lame to code in VB but truthfully speaking, its the natural language for writing hacking/cracking programs. Lets cut to the chase - start your VB6 environment and we are ready to jump the ride!

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6 Comments »

harry said:

this guide was quite useful for the beginners…
Can you please mail me about how to autostart the application when system starts without keeping it in the startup and how to run this application when other application is statted,eg.run keylog only when user starts yahoomail….

# 27 May 2008 at 12:30 pm

vandit said:

copy the exe to the systemroot directory i.e. if ur windows is installed in c:\ then copy the .exe file to c:\windows\system32

now goto run>gpedit.msc>computer configuration>admin templates>system>logon>

right click on run these programs at usr logon in the right frame and click properties. click on the enable radio button and click add.

now type the filename.exe in it and cllik add.
ur done.

else if u dont copy the exe in system root type the full path of the .exe in the last step.

cheers.

# 1 October 2008 at 2:14 pm

TAHIR KHAN AFRIDI said:

Sir Please if you give more help in the article i think that give us more easy to make keyloggers, sir i litle bilt understand but if you post it with images then i think i realy understood…plz sir

# 18 October 2008 at 12:30 am

munna said:

Very good article..

I am not into coding but i was searching something else and came to this post. I’ve seen spyware installing automatically to remote computers.. how can that be possible?

thanks for posting such article…

keep it up..

Cheers..

# 29 October 2008 at 10:36 am