Overview
This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.
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Minimum DAT
4002 (1998-12-02) Updated DAT4002 (1998-12-02) |
Minimum Engine
5.1.00 File Length247 Bytes |
Description Added
1992-10-15 Description Modified1992-10-15 |
Malware Proliferation
Characteristics
Each time an infected file is executed, the Clonewar.247 virus may infect one .EXE file in the current directory by creating a hidden, read-only .COM file with the same base file name.
Clonewar.247 does not do anything besides replicate.
Additional Comments:
The Clonewar virus was received in October, 1992. It appears to be
from the United States. Clonewar is a non-resident spawning or
companion virus.
When a program infected with the Clonewar virus is executed, the
Clonewar virus may infect one .EXE program located in the current
directory by creating a hidden, read-only .COM file with the same
base file name. The hidden, companion file will have a file length
of 247 bytes and its file date and time will be the system date
and time when it was created. The following text string can
be found in all of the companion files:
"*.EXE COM"
The files will also contain the name of the companion file, and the
program's name with a .EXE extention.
Systems infected with Clonewar may receive the message "EXEC failure"
when attempting to execute .EXE programs, and are then returned to
the DOS prompt.
Clonewar doesn't do anything besides replicate, but it does interfer
with system operation.
Known variant(s) of Clonewar are:
Symptoms
"*.EXE COM"
Users of infected systems with Clonewar.247 may receive the message "EXEC failure" when attempting to execute .EXE files. Then the user is returned to the DOS prompt.
The hidden, companion file has a file length of 247 bytes. Its file date and time is the system date and time when it was created.
Method of Infection
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.
Removal
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 :
* 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.
Variants
Acme
Clonewar2
TrekWar