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.

Characteristics

This threat is detected as VBS/Pica.worm.gen. On executing the script, the virus will copy itself as Kernel32.vbs in windows SYSTEM directory. The virus will also make a copy of itself as "ISO9" + [second] + [minute].exe.vbs. An example of a filename it may create depending on the second and minute would be: IS091942.exe.vbs. This file is created to the hard coded directory C:\Windows\Desktop. Also creates MyAdult + [minute].jpg.vbs in all network directories.

If the script was dropped by X97M/Yawn.n@MM the file c:\army.xls will also be copied to all network drives.

If current minute is greater than 55 and the current day is either Wednesday, Thursday, Friday or Saturday, the following message is displayed:

The following registry settings may be edited:

• HKLM\system\currentcontrolset\services\Vxd\Vnetsup\Workgroup,"Army"
• HKCU\Software\Microsoft\Windos\CurrentVersion\Policies\Explorer\NoClose,"1"
• HKCU\Software\Microsoft\Office\9.0\Excel\Security\Level,"1"
• HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Army,"wscript.exe [windows system folder] "\kernel32.vbs %"

Symptoms

The presence of the above files and message.

Method of Infection

Executing the script will infect the system.

Removal

Use specified engine and DAT files for detection and removal. Delete any file which contains this detection.

Manual Removal Instructions - Simply delete the file(s) mentioned in this description
- Remove any registry key entries if applicable

Using File Filtering with WebShield SMTP for WindowsNT(not applicable for Solaris):
Within the Configuration console select content filtering.
Select Add.
Add a Description for the content filter rule such as VBSBlock.
Select Filter on Attachment File name.
Filter on .vbs
Select OK.

AVERT Recommended Updates:

* Office2000 Updates

* 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.

Variants

Variants

N/A

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.

Characteristics

Characteristics -

This threat is detected as VBS/Pica.worm.gen. On executing the script, the virus will copy itself as Kernel32.vbs in windows SYSTEM directory. The virus will also make a copy of itself as "ISO9" + [second] + [minute].exe.vbs. An example of a filename it may create depending on the second and minute would be: IS091942.exe.vbs. This file is created to the hard coded directory C:\Windows\Desktop. Also creates MyAdult + [minute].jpg.vbs in all network directories.

If the script was dropped by X97M/Yawn.n@MM the file c:\army.xls will also be copied to all network drives.

If current minute is greater than 55 and the current day is either Wednesday, Thursday, Friday or Saturday, the following message is displayed:

The following registry settings may be edited:

• HKLM\system\currentcontrolset\services\Vxd\Vnetsup\Workgroup,"Army"
• HKCU\Software\Microsoft\Windos\CurrentVersion\Policies\Explorer\NoClose,"1"
• HKCU\Software\Microsoft\Office\9.0\Excel\Security\Level,"1"
• HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Army,"wscript.exe [windows system folder] "\kernel32.vbs %"

Symptoms

Symptoms -

The presence of the above files and message.

Method of Infection

Method of Infection -

Executing the script will infect the system.

Removal -

Removal -

Use specified engine and DAT files for detection and removal. Delete any file which contains this detection.

Manual Removal Instructions - Simply delete the file(s) mentioned in this description
- Remove any registry key entries if applicable

Using File Filtering with WebShield SMTP for WindowsNT(not applicable for Solaris):
Within the Configuration console select content filtering.
Select Add.
Add a Description for the content filter rule such as VBSBlock.
Select Filter on Attachment File name.
Filter on .vbs
Select OK.

AVERT Recommended Updates:

* Office2000 Updates

* 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.

Variants

Variants -

N/A