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Typically the malware loader persists through the transition to protected mode when the kernel has loaded, and is thus able to subvert the kernel. [ 40 ] [ 41 ] [ 42 ] For example, the "Stoned Bootkit" subverts the system by using a compromised boot loader to intercept encryption keys and passwords.
A dropper [1] [2] is a Trojan horse that has been designed to install malware (such as viruses and backdoors) onto a computer. The malware within the dropper can be packaged to evade detection by antivirus software. Alternatively, the dropper may download malware to the target computer once activated.
Malware (a portmanteau of malicious software) [1] is any software intentionally designed to cause disruption to a computer, server, client, or computer network, leak private information, gain unauthorized access to information or systems, deprive access to information, or which unknowingly interferes with the user's computer security and privacy.
The Rabbit (or Wabbit) virus, more a fork bomb than a virus, is written. The Rabbit virus makes multiple copies of itself on a single computer (and was named "rabbit" for the speed at which it did so) until it clogs the system, reducing system performance, before finally reaching a threshold and crashing the computer. [10]
Virus phases is the life cycle of the computer virus, described by using an analogy to biology. This life cycle can be divided into four phases: Dormant phase The virus program is idle during this stage. The virus program has managed to access the target user's computer or software, but during this stage, the virus does not take any action.
Malware analysis is the study or process of determining the functionality, origin and potential impact of a given malware sample such as a virus, worm, trojan horse, rootkit, or backdoor. [1] Malware or malicious software is any computer software intended to harm the host operating system or to steal sensitive data from users, organizations or ...
In order to be executed by the system (such as an operating system, firmware [citation needed], or boot loader), an executable file must conform to the system's application binary interface (ABI). In simple interfaces, a file is executed by loading it into memory and jumping to the start of the address space and executing from there. [8]
Form grabbing is a form of malware that works by retrieving authorization and log-in credentials from a web data form before it is passed over the Internet to a secure server.