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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.
Blackshades can reportedly be used remotely to access an infected computer without authorization. Blackshades allows hackers to perform many actions on an infected computer remotely without authorization, including the ability to: [1] [5] Access and modify files on the victim's computer. Log keystrokes on the victim's computer.
Acme is a computer virus which infects MS-DOS EXE files. Each time an infected file is executed, Acme may infect an EXE in the current directory by creating a hidden 247 byte long read-only COM file with the same base name. (In MS-DOS, if the file extension is not specified, and two files with the same base name exist, one with .COM and one ...
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.
Upon execution, whether from an infected file or the Cholera dropper, CTX will check to see if its payload routine should activate (see Payload). If not, CTX will infect EXE files. CTX has a polymorphic nature, which is neither particularly simple or complex in nature. CTX also obscures the entry point of files to avoid detection. The virus ...
Ada is a memory resident virus [3] that infects files. The Ada virus mainly targets .COM files, specifically COMMAND.COM and stays in the memory of the computer it infects after the program it infected executes. Infected programs have 2,600 bytes additional data inserted at the beginning of the file, [1] and the file itself contains the text ...
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 ...
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