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

• Xuxa

Characteristics

Xuxa.1413 is a memory resident, file infecting virus. It infects .COM files. It does not infect COMMAND.COM.

Upon infection, this virus becomes memory resident as a low system memory Terminate-and-Stay Resident (TSR) of 1,728 bytes. Interrupts 1C and 21 are hooked by Xuxa.1413 in memory.

Once the Xuxa.1413 virus has become memory resident, it infects .COM files as they are executed.

Additional Comments:
The Xuxa virus was submitted in March, 1992. It was originally isolated in Argentina. Xuxa is a memory resident infector of .COM programs. It does not infect COMMAND.COM. The first time a program infected with Xuxa is executed, this virus will install itself memory resident as a low system memory TSR of 1,728 bytes. Interrupts 1C and 21 will be hooked by Xuxa in memory. After the Xuxa virus has become memory resident, it will infect .COM programs when they are executed. Infected programs will have a file length increase of 1,413 bytes. The virus will be located at the beginning of the program. The file's date and time in the DOS disk directory listing will not be altered. Two text strings appear in the viral code in all infected programs: "COMMANDCOM" "$$TMP.COM" Systems infected with the Xuxa virus may notice that infected programs will no longer be in their original position in the DOS disk directory listing. They will appear towards the end of the directory, or in the position where the entry occurred for a file the user has recently deleted. The Xuxa virus will play music between 5:00PM and 6:00PM. The tune is the theme song from the children's TV show "El show de Xuxa" which is broadcast in Argentina during this time period. Known variant(s) of Xuxa are:

Symptoms

Two text strings appear in the viral code in all infected files:

"COMMANDCOM"
"$$TMP.COM"

Systems infected with the Xuxa.1413 virus may notice that infected files are no longer in their original position in the DOS disk directory listing. They appear towards the end of the directory, or in the position where the entry occurred for a file the user has recently deleted.

The Xuxa.1413 virus plays music between 5:00PM and 6:00PM. The tune is the theme song from the children's TV show "El show de Xuxa" which is broadcast in Argentina during this time period.

Infected files have a file length increase of 1,413 bytes. The virus is located at the beginning of the file. The file's date and time in the DOS disk directory listing are not altered.

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

• Xuxa-1405
• Xuxa-B

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

• Xuxa

Characteristics

Characteristics -

Xuxa.1413 is a memory resident, file infecting virus. It infects .COM files. It does not infect COMMAND.COM.

Upon infection, this virus becomes memory resident as a low system memory Terminate-and-Stay Resident (TSR) of 1,728 bytes. Interrupts 1C and 21 are hooked by Xuxa.1413 in memory.

Once the Xuxa.1413 virus has become memory resident, it infects .COM files as they are executed.

Additional Comments:
The Xuxa virus was submitted in March, 1992. It was originally isolated in Argentina. Xuxa is a memory resident infector of .COM programs. It does not infect COMMAND.COM. The first time a program infected with Xuxa is executed, this virus will install itself memory resident as a low system memory TSR of 1,728 bytes. Interrupts 1C and 21 will be hooked by Xuxa in memory. After the Xuxa virus has become memory resident, it will infect .COM programs when they are executed. Infected programs will have a file length increase of 1,413 bytes. The virus will be located at the beginning of the program. The file's date and time in the DOS disk directory listing will not be altered. Two text strings appear in the viral code in all infected programs: "COMMANDCOM" "$$TMP.COM" Systems infected with the Xuxa virus may notice that infected programs will no longer be in their original position in the DOS disk directory listing. They will appear towards the end of the directory, or in the position where the entry occurred for a file the user has recently deleted. The Xuxa virus will play music between 5:00PM and 6:00PM. The tune is the theme song from the children's TV show "El show de Xuxa" which is broadcast in Argentina during this time period. Known variant(s) of Xuxa are:

Symptoms

Symptoms -

Two text strings appear in the viral code in all infected files:

"COMMANDCOM"
"$$TMP.COM"

Systems infected with the Xuxa.1413 virus may notice that infected files are no longer in their original position in the DOS disk directory listing. They appear towards the end of the directory, or in the position where the entry occurred for a file the user has recently deleted.

The Xuxa.1413 virus plays music between 5:00PM and 6:00PM. The tune is the theme song from the children's TV show "El show de Xuxa" which is broadcast in Argentina during this time period.

Infected files have a file length increase of 1,413 bytes. The virus is located at the beginning of the file. The file's date and time in the DOS disk directory listing are not altered.

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 -

• Xuxa-1405
• Xuxa-B