Threat Description

First

Details

Aliases: First, VBSV, WSV, Windows Scripting Virus, WSH, FWSV, Rabbit
Category: Malware
Type: Worm
Platform: VBS

Summary


VBS/First is the first virus to use Windows Scripting Host. This is a macro-like technique for Windows 98 and NT 5.0.

Windows Scripting Host macros come in files with VBS and JS extensions. You do not need any MS Office application or Internet Explorer in order to execute these macros - just double-clicking is enough to run them.

When VBS/First is executed, it will locate and infect other VBS macro files.



Removal


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details


Two variants of the VBS/First virus will try to connect to Code Breakers website on the 15th of the month.

The virus is also shows a messagebox like this:

VBSv v2.0         by Lord Natas/CodeBreakers   

The VBS/First.C variant (VBSV2.0) is able to infect both VBS and .JS files





Description Details: Katrin Tocheva & Mikko Hypponen


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