ADT.1778
Description ADT.1778
It is not a dangerous memory resident parasitic virus. It hooks INT 21h and when any program is executed, searches for COM and EXE files in the directory from where the program is run, and writes itself to the end of the file. When a debugger is run, the virus displays the text:
-------------##########-############----##############---------####-----------
------------###########-##############--##############---------####-----------
-----------#####--#####-#####----######------####--------------####-----------
----------#####---#####-#####----######------####--------------####-----------
---------##############-#####----######------####---------------##------------
--------###############-#####----######------####---------------##------------
-------#####------#####-##############-------####-----------------------------
------#####-------#####-############---------####---------------##------------
On 19th of any month the virus also hooks INT 9 (keyboard) and displays the text " Andreas" at the cursor position.
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Strike
Description Strike
It is a dangerous memory resident boot virus. It hooks INT 13h and writes itself to boot sectors of the floppy disks and to the MBR of the hard drive. While infecting a floppy disk the virus does not save the original boot sector. While loading from such disk the virus (not the system!) displays the message:
Non-System disk or disk error
Replace and strike any key when ready
The virus corrupts the data that is read from the disk, if that data contains an EXE header that is packed by LzExe.
Striker.461
Description Striker.461
This is a harmless nonmemory resident parasitic virus. It scans the subdirectory tree, and writes itself to the end of the .COM files. At the beginning and at the end of infected file there is the string:
Striker #1
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