McAfee > Theat Center > Virus Detail Page

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.

Aliases

• Clonewar

Characteristics

Clonewar.247 is a spawning, file infecting virus. It does not become memory resident. It infects .EXE files.

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

The following text string is found in all of the companion files:

"*.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 :

* 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.

Variants

Variants

• Acme
• Clonewar2
• TrekWar

All Information

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.

Aliases

• Clonewar

Characteristics

Characteristics -

Clonewar.247 is a spawning, file infecting virus. It does not become memory resident. It infects .EXE files.

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

Symptoms -

The following text string is found in all of the companion files:

"*.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

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 -

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 :

* 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.

Variants

Variants -

• Acme
• Clonewar2
• TrekWar