Meaning > Computer Viruses

The 007 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files and data files.

100 YEARS VIRUS

See "4096 Virus"

1008 VIRUS

The 1008 Virus is an encrypted computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

1014 VIRUS

The 1014 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

1024 VIRUS

The 1024 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

1024PSRC VIRUS

The 1024PSRC Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation.

1030 VIRUS

The 1030 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1049 VIRUS

The 1049 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1067 VIRUS

The 1067 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

1076 VIRUS

The 1076 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and corrupts program or overlay files.

1210 VIRUS

The 1210 Virus (Prudents Virus) is a memory-resident computer virus which infects .EXE files, increasing their size by 1210 bytes, when they are executed. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files. The payload activates at the begininng of May, changing all disk writes to disk verifies, thereby preventing data being written to the disk.

1236 VIRUS

The 1236 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

123NHALF VIRUS

The 123nhalf virus was so named because it causes a Lotus 1-2-3 release 3 spreadsheet files to be saved exactly one half the size they should be. For example, a 100 x 100 cell spreadsheet will only be saved as a 50 x 50 cell spreadsheet. The virus only infects the file 123DOS.EXE, and the file grows in size by 3907 bytes. Any spreadsheet saved after the virus has infected the file is exactly half the size of what it should be. If the 123DOS.EXE file is erased and restored from a backup, and 1-2-3 is run again, the file again grows in size. The virus only infects the 123DOS.EXE file, when running on a machine with a 80286 processor. it will not infect the file on a 80386 system. The virus also will not infect files unless there is a minimum of 3 megabytes of extended memory.

1241 VIRUS

The 1241 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1244 VIRUS

The 1244 Virus is a computer virus which infects .COM, .EXE and overlay files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1253 - BOOT VIRUS

The 1253 - Boot Virus is a computer virus which infects the fixed disk boot sector. The virus is loaded into memory by booting from an infected disk and then affects the computer's runtime operation, corrupts program or overlay files and data files.

1253 - COM VIRUS

The 1253 - COM Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

1260 VIRUS

The 1260 Virus is an encrypted stealth computer virus which resists tracing by Debug and infects . COM files (increasing their file length by 1260 bytes, and encrypting them with a unique key). It was derived from the Vienna Virus. The virus is loaded into memory by executing an infected program and corrupts program files.

1280 VIRUS

The 1280 Virus is an encrypted computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and corrupts program or overlay files.

1339 VIRUS

The 1339 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1376 VIRUS

The 1376 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1381 VIRUS

The 1381 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1385 VIRUS

The 1385 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1392 VIRUS

The 1392 Virus (Amoeba Virus) is a computer virus which infects .COM and . EXE files including COMMAND.COM (changing the directory entry date and time of the file to that of the time and date of infection). It was developed in Indonesia in 1990. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, and corrupts program files.

145 VIRUS

The 145 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1452 VIRUS

The 1452 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1530 VIRUS

The 1530 Virus is a computer virus which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1536 VIRUS

See "Zero Bug Virus"

1559/1554 VIRUS

The 1559/1554 Virus is an encrypted computer virus which infects .COM and . EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1575 VIRUS

The 1575 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

1575/1591 VIRUS

The 1575/1591 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1605 VIRUS

The 1605 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

1661 VIRUS

The 1661 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1677 VIRUS

The 1677 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

1689 VIRUS

The 1689 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and corrupts program or overlay files.

1701 VARIANT VIRUS

The 1701 variant Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1704 VIRUS

The 1704 Virus (Blackjack Virus) is an encrypted computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files. The code for the 1704 virus is identical to the 1701 Virus except for a single instruction. The only differences are the removal of a conditional jump from the 1701 (which would never have been taken), and some necessary segment overrides on the BIOS tests missing in the previous version. The virus was designed to not infect micros manufactured by IBM, but errors in coding enable it to infect any PC, regardless of origin. The virus tests the BIOS for the string 'COPR. IBM', and contains code to not infect if it finds this - however there are errors in the code which prevent it from working. As with the 1701 Virus, the 1704 Virus can recognize if it has previously infected a file. However, because recognition depends on the length of the virus, it will infect programs already infected by variants with different lengths. (1701 will infect COM files infected with 1704, and vice versa.) The encryption of this virus is different in each instance of the virus, being dependent on the size of the host file. The hard disk is formatted when the virus activates. The 1704 Virus infects only COM-files which are at least 3 bytes long, and it does so only once for any given file. It overwrites the first three bytes with a JMP to the beginning of the viral code, which is appended to the file. The 2 byte address of this JMP instruction is probably the reason why only COM files are susceptible to infection. The 1704 Virus retains the file's time stamp. It even infects read-only files; on write- protected floppy disks, it attempts writing 5 times per file, thereby revealing its activity. In the infected file, the viral code is cryptographically encoded, using a simple Vigenere code depending on the length of the file; only the instructions for decoding the encrypted part of the code are in plain machine- language. This is obviously intended as a impediment against disassembling. Hence, every copy of the virus looks different (depending on the length of the file). On invocation of an infected program, the virus installs itself in RAM (if no copy is already installed), then replaces the JMP instruction with its former contents and resumes normal program operation. The storage map shows that the virus has tinkered with the free storage pointer-chain to hide the fact that it has hooked interrupt 21. Hence, only a minor part of the virus is visible in the storage map. In every year, from October to December, the virus will interfere with CGA or EGA operated screens, moving randomly chosen characters down, like falling leaves in autumn. After a while, you'll have a big heap of characters at the bottom of your screen, and as you cannot see anymore what the computer is trying to display, you'll probably have to restart the system. This behaviour has been predicted by two people, who have disassembled the virus, and has later been observed on many EGA-equipped ATs.

1720 VIRUS

The 1720 Virus (PSQR Virus) is a computer virus derived from the
Jerusalem Virus, which infects .COM, .EXE and overlay files. The virus is loaded into memory by executing an infected program and then affects the computer' s runtime operation, corrupts program or overlay files.

1757 VIRUS

The 1757 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

1803 VIRUS

The 1803 Virus is an encrypted computer virus which uses stealth techniques to avoid detection and which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1804 VIRUS

The 1804 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

1835 VIRUS

The 1835 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1840 VIRUS

The 1840 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

191 VIRUS

The 191 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

196 VIRUS

The 196 Virus is a non-overwriting version of the 97 Virus written by Fred Deakin. It is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

1963 VIRUS

The 1963 Virus is a computer virus which uses stealth techniques to avoid detection and which infects .COM, . EXE and overlay files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

1971/8 TUNES VIRUS

The 1971/8 Tunes Virus is a computer virus which infects .COM, .EXE and overlay files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

1992 VIRUS

The 1992 Virus is a harmless memory resident parasitic virus written by Skism. It hooks INT 21h and writes itself to the end of COM- and EXE-files that are executed or opened. It contains the internal text string: 1992. On the last Friday of the month the virus will display a full colour, full screen message.

1992B VIRUS

The 1992B Virus is an encrypted computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program.

2014 VIRUS

The 2014 Virus is a computer virus which infects the fixed disk and diskette boot sectors. The virus is loaded into memory by booting from an infected disk and then affects the computer's runtime operation and corrupts program or overlay files.

203 VIRUS

The 203 Virus is a computer virus written by Solomon, which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program. The virus corrupts program files.

205 VIRUS

The 205 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

2062 VIRUS

The 2062 Virus is an encrypted computer virus which uses stealth techniques to avoid detection and which infects .COM and .EXE files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

2153 VIRUS

The 2153 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files and data files.

2330 VIRUS

The 2330 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

2470 VIRUS

The 2470 Virus is a computer virus which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

2559 VIRUS

The 2559 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

2560 VIRUS

The 2560 Virus is a computer virus which uses stealth techniques to avoid detection and which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

262 VIRUS

The 262 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

2622 VIRUS

The 2622 Virus is a computer virus which infects the fixed disk partition table. The virus is loaded into memory by booting from an infected disk and then affects the computer's runtime operation, corrupts program or overlay files and data files.

2803 VIRUS

The 2803 Virus is an encrypted computer virus which uses stealth techniques to avoid detection and which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

2930 VIRUS

The 2930 Virus (Traceback II Virus) is a computer virus which infects .COM and .EXE files, increasing their size by 2930 bytes. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

2936 VIRUS

The 2936 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

302 VIRUS

The 302 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

3040 VIRUS

The 3040 Virus is a computer virus which uses stealth techniques to avoid detection and which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files and data files.

3066 VIRUS

See "Traceback Virus"

310 VIRUS

The 310 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

337 VIRUS

The 337 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation.

344 VIRUS

The 344 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

3445 VIRUS

The 3445 Virus is an encrypted computer virus which uses stealth techniques to avoid detection and which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

355 VIRUS

The 355 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files and data files.

3551 VIRUS

See "Syslock/3551 Virus"

365 VIRUS

The 365 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

370-B VIRUS

The 370-B Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and corrupts program or overlay files.

382 VIRUS

The 382 Virus is a computer virus (also known as the Family Q Virus) which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

384 VIRUS

The 384 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and corrupts program or overlay files and data files.

405 VIRUS

The 405 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program. The virus corrupts program files by overwriting the first 405 bytes of a COM file in the current directory. If the length of the file to be infected is less than 405 bytes, the length is increased to 405. Due to coding errors, the virus unsuccessfully attempts to infect files in other than the current directory. The virus is not able to recognize an infected file. Thus it will re-infect a file again and again. However, because it overwrites the first 405 bytes, the infected files do not grow in size. It is similar to the Virus 1.1 published in Ralf Burger's book.

408 VIRUS

The 408 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

4096 VIRUS

The 4096 Virus (Century Virus, IDF Virus, 100 Years Virus) is a memory- resident computer virus which uses stealth techniques to avoid detection and which infects .COM, .EXE and overlay files including COMMAND.COM adding 4096 bytes to their length. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files. Once the virus is resident in memory, the increase in length will not appear in a directory listing, and it will infect any executable file that is opened, including those opened with the COPY or XCOPY command. Through FAT manipulation, the virus destroys files through a slow crosslinking process that would seem to be a hardware problem. If the virus is present in memory and you attempt to copy infected files, the new copy of the file will not be infected if the extension is neither COM nor EXE.

422 VIRUS

The 422 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

439 VIRUS

The 439 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

44 VIRUS

The 44 Virus is an overwriting computer virus written by Dark Helmet of the Trident organisation which which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts any files with an extension commencing.C, such as . COM.

482 VIRUS

The 482 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

487 VIRUS

The 487 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

4915 VIRUS

The 4915 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

4MAT2 VIRUS

The 4Mat2 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

500 VIRUS

The 500 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

510 VIRUS

The 510 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation.

512 VIRUS

The 512 Virus (also called the Number Of The Beast Virus) is a memory- resident computer virus which uses stealth techniques to avoid detection and which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and may damage the file allocation table.

5120 VIRUS

The 5120 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

547 VIRUS

The 547 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

555 VIRUS

The 555 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

557 VIRUS

The 557 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files and data files.

560 VIRUS

The 560 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

578 VIRUS

The 578 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

5LO VIRUS

The 5LO Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

621 VIRUS

The 621 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files and data files.

644 VIRUS

The 644 Virus is an encrypted computer virus which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program. The virus corrupts data files.

651 VIRUS

The 651 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files and data files.

654 VIRUS

The 654 Virus is a computer virus which infects .COM files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

658 VIRUS

The 658 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

674 VIRUS

The 674 Virus is a VCL generated computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program files.

702 VIRUS

The 702 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program. The virus corrupts program or overlay files.

709 VIRUS

The 709 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

727 VIRUS

The 727 Virus is a computer virus which uses stealth techniques to avoid detection and which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

733 VIRUS

The 733 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

737 VIRUS

The 737 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

748 VIRUS

The 748 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts data files.

765 VIRUS

The 765 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

777 VIRUS

The 777 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

7808 VIRUS

The 7808 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

789 VIRUS

The 789 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation.

7TH SON VIRUS

The 7th Son Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

7THSON 284 VIRUS

The 7thson 284 Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

7THSON 284A VIRUS

The 7thson 284a Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

7THSON 332B VIRUS

The 7thson 332b Virus is a computer virus which infects .COM files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

800 VIRUS

The 800 Virus is a computer virus which infects .COM and .EXE files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

8000 VIRUS

The 8000 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

812 VIRUS

The 812 Virus is an encrypted computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts data files.

834 VIRUS

See "Arab Virus"

855 VIRUS

The 855 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files.

889 VIRUS

The 889 Virus is a computer virus which infects .COM and .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

90210 VIRUS

The 90210 Virus is a semi-stealth virus written by the Trident organisation. It hides file-size changes while it is in memory and marks infected files with the timestamp. It will infect COM files on open, execute, delete, and rename. It checks if it is in memory by calling Int 21h with DEADh in AX and uses MCB's to go memory resident.

903 VIRUS

The 903 Virus is a computer virus which infects .COM files including COMMAND. COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

905 VIRUS

The 905 Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.

911 VIRUS

The 911 virus is a direct variant of the Armagedon the GREEK Virus, derived merely by changing the text within and the dialing string. The virus size is 1079 bytes, making the smallest carrier 1081 bytes. The main effect of the virus is to dial ' 911' every once in a while if a modem is present on com ports 1-4 (the original virus dialed the speaking clock in Greece). It is a memory resident virus which infects .COM files.

923 VIRUS

The 923 Virus is a computer virus which infects .COM, .EXE and overlay files including COMMAND.COM. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation, corrupts program or overlay files and data files.

99% VIRUS

The 99% Virus is an encrypted computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program. The virus corrupts data files.

99%-B VIRUS

The 99%-B Virus is a computer virus which infects .EXE files. The virus is loaded into memory by executing an infected program and then affects the computer's runtime operation and corrupts program or overlay files.