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A macro virus can be spread through e-mail attachments, removable media, networks and the Internet, and is notoriously difficult to detect. [1] A common way for a macro virus to infect a computer is by replacing normal macros with a virus. The macro virus replaces regular commands with the same name and runs when the command is selected.
Dridex, also known as Bugat and Cridex, is a form of malware that specializes in stealing bank credentials via a system that utilizes macros from Microsoft Word. [5]The targets of this malware are Windows users who open an email attachment in Word or Excel, causing macros to activate and download Dridex, infecting the computer and opening the victim to banking theft.
These distribution methods include exploit kits, [11] Word and Excel attachments with malicious macros, [12] DOCM attachments, [13] and zipped JS attachments. [ 14 ] The general consensus among security experts to protect yourself from ransomware, including Locky, is to keep your installed programs updated and to only open attachments from ...
The Melissa virus is a mass-mailing macro virus released on or around March 26, 1999. It targets Microsoft Word and Outlook -based systems and created considerable network traffic. The virus infects computers via email ; the email is titled "Important Message From," followed by the current username.
The new Emotet infections were delivered via TrickBot, to computers that were previously infected with TrickBot, and soon began sending malicious spam email messages with macro-laden Microsoft Word and Excel files as payloads. [15] On 3 November 2022, new samples of Emotet emerged attached as a part of XLS files attached within email messages.
Typical malicious payloads might delete files on a host system (e.g., the ExploreZip worm), encrypt files in a ransomware attack, or exfiltrate data such as confidential documents or passwords. [17] Some worms may install a backdoor. This allows the computer to be remotely controlled by the worm author as a "zombie".
The phishing efforts generally contain malicious documents (or hyperlinks to them). [8] When the victim enables it, a malicious macro or loader starts the infection sequence. [7] Like many other ransomware families, Ryuk deletes shadow copy files and stops processes from the hardcoded list.
In certain cases, a cold boot attack is used in the discipline of digital forensics to forensically preserve data contained within memory as criminal evidence. [3] For example, when it is not practical to preserve data in memory through other means, a cold boot attack may be used to perform a dump of the data contained in random-access memory.