Constructor

Classification

Malware

Constructor

W32

Constructor, Virtools

Summary

A Constructor is a malware creation toolkit that allows users with little technical knowledge to easily assemble a complex, malicious program from prepared 'building blocks' of code.

Automatic action

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.

Suspect a file is incorrectly detected (a False Positive)?

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:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • 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.

  • 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.

For more Support

Community

Find the latest advice in our Community.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

Constructors come with a variety of options, ranging from very simple to very sophisticated. A typical kit is very easy to use, as it eliminates the need for programming knowledge and skills. A user can create malware simply by selecting the features desired.

A Constructor kit's ease of use is demonstrated by an incident in which an unknown person created more than 15,000 viruses using a constructor and sent them to antivirus companies. Fortunately, because the malware produced from these programs uses a finite set of code blocks and known polymorphic engines, they can be detected using Generic Detections.

The most famous Constructors are VCL, SennaSpy, BWG, PS-MPC, TPPE and IVP.