Threat Description

VBSWG.Q@mm

Details

Aliases:VBSWG.Q@mm
Category:Malware
Type:Worm
Platform:VBS

Summary



At February 16th, a variant of VBS/VBSWG was spreading within messages that have the following content:

  Subject: Info Reformasi
 Body: Maklumat Terkini...
 Attachment: r4mac.vbs



Removal


Automatic action

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

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



When the attached file is executed, the worm will mail itself to the each recipient in every address book. After mass mailing the following key is added to the registry:

  HKEY_CURRENT_USER\software\Reformasi\mailed

This variant also replicates using mIRC and Pirch IRC clients. It replaces the "script.ini" from mIRC and "events.ini" from Pirch installation directories, causing that the worm will send itself to the IRC user that joins the channel where an infected user is.

VBSWG.Q also goes trough all local and network drivers from the system, and replaces every file with either ".vbs" or ".vbe" extension with itself. It also attempts to locate mIRC and Pirch installations from these drives.

This variant activates its payload at September 7th, when it launches a web browser and connects to Malaysian web site.

Information about the original VBS/Onthefly.A (also known as I-Worm.Lee.o and VBS/VBSWG) is available at:http://www.F-Secure.com/v-descs/onthefly.shtml





Technical Details: Katrin Tocheva and Sami Rautiainen, F-Secure; February 2001


SUBMIT A SAMPLE

Suspect a file or URL was wrongly detected? Submit a sample to our Labs for analysis

Submit Now

Scan & clean your PC

F-Secure Online Scanner will scan and clean your PC in just a few minutes for free

Learn More