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Access and modify files on the victim's computer. Log keystrokes on the victim's computer. Access to the webcam of the victim. Make all infected computers subordinate to DDoS attack commands, using them as robots to carry out extremely effective attacks against targets. Download and execute files on the victim's computer.
EXE files, although it does not infect command.com. It does not become memory resident. Each time an infected file is executed, Abraxas infects the copy of dosshell.com located in the C:\DOS directory (creating the file if it does not exist), as well as one EXE file in the current directory. Due to a bug in the virus, only the first EXE file in ...
ABC, discovered in October 1992, is a memory-resident, file-infecting computer virus which infects EXE files and may alter both COM and EXE files. ABC activates on the 13th day of every month. Upon infection, ABC becomes memory-resident at the top of system memory but below the 640 K DOS boundary and hooks interrupts 16 and 1C.
Despite the easy-to-use interface, the technology behind File Checker is much more complex. Whenever a user uploads a file to File Checker, the tool calculates the file's hash in the browser and sends it to NordLabs' backend. Here, it's checked against a huge database of known malicious file hashes.
EXE files including command.com. Each time an infected file is executed, Acid infects all of the .EXE files in the current directory. Later, if an infected file is executed, it infects the .COM files in the current directory. Programs infected with Acid will have had the first 792 bytes of the host program overwritten with Acid's own code ...
SYS file, Ontario.2048 goes memory resident and infects files of these times upon being opened. COMMAND.COM is infected using a special routine, and will not increase in file size. Infected files will increase in size by 2,048 bytes. However, when Ontario.2048 is in memory, no increase in file size will be observed due to the virus' stealthing.
The name "Spacefiller" was introduced because most viruses write their code to the end of the infected file, with infected files being detectable because their file size increases. In contrast, CIH looks for gaps in the existing program code, where it then writes its code, preventing an increase in file size; in that way, the virus avoids ...
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