Virus Database

AFFA.1313

Description AFFA.1313

It is a very dangerous memory resident parasitic virus. It hooks INT 21h and writes itself to the end of .COM files (except COMMAND.COM) that are executed or opened. The virus contains the ID-bytes: AFh, FAh. On February, 2nd, 1997 the virus erases the MBR of the hard drive and halts PC.

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Macro.Word.UnderGround

Description Macro.Word.UnderGround

This is an encrypted macro virus. It contains two macros. Their names are Macro7 and AutoClose in NORMAL.DOT. In documents their names are randomly selected: <letter><number>, <letter><number> (for example: T45, E53).
The virus infects the documents that are closed (AutoClose). To infect the global macros area (NORMAL.DOT) on opening an infected document, the virus sets one of random named macros in document as the auto-macro. As a result, the macros in infected document do not have any auto-name, but they are executed while opening this document as the AutoOpen auto-macro.
While infecting the virus creates a temporary macro. While infecting the NORMAL.DOT the virus displays the MessageBox and asks a user for permission:
SoftWare UnderGround
Can I install myself into your NORMAL.DOT
[YES] [NO]

In case of "YES" the virus infects the NORMAL.DOT, displays the statistic information about current document and document author's name.

Macro.Word.Unhas

Description Macro.Word.Unhas

This virus contains three identical macros that are named AutoOpen, JJAB, JJAO. The virus replicates itself on opening document (AutoOpen). It displays the MessageBox:
Virus MS Word by Mashoer Majid, ELektro Teknik Unhas

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