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Fourcourse

Classification

Category: Malware

Type: Trojan

Aliases: Fourcourse, VBS/Fourcourse.A, Fourcourse.A

Summary


Fourcourse is a Visual Basic Script trojan which consists of two VBS files. The first file carries another Visual Basic Script which it drops in the root of C: drive as sysw32.vbs.

Removal


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

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About the product

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Submit a sample

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Technical Details


It also changes Windows registry by adding the following key:

  • HKLM\Software\Microsoft\Windows\CurrentVersion\Run\sysw32= C:\sysw32.vbs

So the next time the system is restarted, the trojan in sysw32.vbs is executed.If the system date is after April 1st, 2003 the script code in sysw32.vbs tries to use all four COM ports to dial a phone number.