Deicide

Each time an infected file is executed, the virus searches the current directory for an uninfected .COM file. If an uninfected .COM file is found, the virus infects it.

Additional Comments:
The Deicide virus was received in February, 1991 from the Netherlands. This virus is a non-resident overwriting virus which infects .COM files, but not COMMAND.COM. Later variants of Deicide are non-resident parasitic viruses, and are described below under "Known variant(s)". When a program infected with Deicide is executed, the virus will search the current directory for an uninfected .COM program. If an uninfected .COM program is found, the virus will infect it, overwriting the first 666 bytes of the program with the virus. If the newly infected program's original file length was 666 bytes or more, then no file length change will show in the disk directory. If originally the program was smaller than 666 bytes, its length will now be 666 bytes. The following message may be displayed by the virus after infecting a file: "File corruption error." If the virus does not find an uninfected .COM program in the current directory, it will display the following message double spaced, and overwrite the first 80 sectors of the system hard disk: "DEICIDE! Glenn (666) says : BYE BYE HARDDISK!! Next time be carufull with illegal stuff" The above messages can be found in all infected files, along with the following message which is not displayed: "This experimental virus was written by Glenn Benton to see if I can make a virus while learning machinecode for 2,5 months. (C) 10-23-1990 by Glenn. I keep on going making virusses." Known variant(s) of Deicide are:

"File corruption error."

If the virus does not find an uninfected .COM file in the current directory, it displays the following message double spaced, and overwrites the first 80 sectors of the system hard disk:

"DEICIDE! Glenn (666) says : BYE BYE HARDDISK!! Next time be carufull with illegal stuff"

The above messages can be found in all infected files, along with the following message which is not displayed:

"This experimental virus was written by Glenn Benton to see if I can make a virus while learning machinecode for 2,5 months. (C) 10-23-1990 by Glenn. I keep on going making virusses."

The virus overwrites the first 666 bytes of the file. If the newly infected file's original file length was 666 bytes or more, there is no file length change. If originally the file was smaller than 666 bytes, its length becomes 666 bytes.

The only way to infect a computer with a file infecting virus is to execute an infected file on the computer. The infected file may come from a multitude of sources including: floppy diskettes, downloads through an online service, network, etc. Once the infected file is executed, the virus may activate.

All Users :
Script,Batch,Macro and non memory-resident:
Use current engine and DAT files for detection and removal.

PE,Trojan,Internet Worm and memory resident :
Use specified engine and DAT files for detection. To remove, boot to MS-DOS mode or use a boot diskette and use the command line scanner:

Additional Windows ME/XP removal considerations

Users should not trust file icons, particularly when receiving files from others via P2P clients, IRC, email or other mediums where users can share files.

AVERT Recommended Updates :

* Office2000 Updates

* Malformed Word Document Could Enable Macro to Run Automatically (Information/Patch )

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link .
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information .

It is very common for macro viruses to disable options within Office applications for example in Word, the macro protection warning commonly is disabled. After cleaning macro viruses, ensure that your previously set options are again enabled.

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