Potok
Summary
VBS/Potok is a mass mailing worm written in Visual Basic Script.
Removal
Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
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Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
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Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
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Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
Variant:Potok.A@mm(I-Worm.Potok, VBS/Stream)
The message that the worm spreads has the following content:
Subject: New Generation of drivers. Body: Microsoft has published new driver for all types Video Cards, compatible with Windows 95/98/NT/2000/XP. You can read about it in attachment document. Best wishes, Microsoft. Attachemnt: driver.doc .vbs
There is 46 spaces between the ".doc" and ".vbs" extensions in the attachment file name.
When executed, the worm attempts to send itself to 50 recipients taken from the first address book using Microsoft Outlook.
This worm works only in Windows NT and Windows 2000, when the system is installed onto NTFS. This is because the worm uses NTFS feature known as "streams" to hide parts of itself to "odbc.ini" in the Windows installation directory.
The worm also attempts to add a new user into system. This, however, requires that the current user has suffient priviledge, for example local administrator rights.