Threat Descriptions

Tqll

Classification

Category :

Malware

Type :

Worm

Platform :

VBS

Aliases :

Tqll

Summary

VBS/Tqll is a worm written with 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:

  • 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.

  • 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.

Technical Details

Variant:Tqll.A (New Year worm)

This worm is partially encrypted with a simple encryption.

When it is executed, it first creates to the Windows directory a file named "3k.exe". This file is a backdoor detected by FSAV as Psychward.G.

Then the worm executes the backdoor.

Next the script uses Outlook to send itself to every recipient listed in each address book. The message looks as follows: 

Subject:

New Year !

 Body: Wow Happy New Year!

 Attachment: happynewyear.txt.vbs

The attachment might be named differently.

VBS/Tqll.A uses the BCC area of the mail to send, so the receiver does not see other recipients.