Malware, short for malicious (or malevolent) software, is software used or created by attackers to disrupt computer operation, gather sensitive information, or gain access to private computer systems. It can appear in the form of code, scripts, active content, and other software. 'Malware' is a general term used to refer to a variety of forms of hostile or intrusive software.
Malware is software used or created by attackers to disrupt computer operation, gather sensitive information, or gain access to private computer systems.
Software which has been designed to operate in a malicious, undesirable manner.
Programs that surreptitiously monitor and report the actions of a computer user.
A software application that includes advertisements, which are displayed while the software is running. Developers use adware as a source of income and to keep the costs of the software down (usually making it free). Some adware programs can include spyware.
Malware uses malicious code to exploit security vulnerabilities in a target machine and install software without a user’s permission. Traditionally, infected media like floppy disks would transfer viruses from one machine to another. With the popularity of the internet, however, nearly all infections occur from online sources such as scam emails, social media messages, and hacked websites.
Analyzing malware, or malicious software, is more of an art than a technique. Because of the wide nature of these products, there are limitless ways to hide functionality.
Some common tools for malware analysis include simple programs like strings. More complex analysis can be conducted by looking at the headers of executables with programs like PEiD and PeExplorer. Finally, the most complete analysis can be done with debuggers like IDA Pro and OllyDbg.
There are two types of techniques to analyze malware. The first is behavioral analysis, which captures changes to the system process, disk, registry, and network (communication). This can be accomplished with the tools stated above.
Malware distributors are continually finding new vulnerabilities in popular software such Windows, Java, Flash, and Adobe Acrobat. Software distributors, therefore have to release continual updates to patch the holes. This cat and mouse game is ongoing, therefore