Summary
This variant spreads in messages with following content:
Subject: Check out this preteen pic!! Body: Hey here is a great preteen pic. She is 12 years old totally bald.. Attachment: Cindy12yr.vbs
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
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\Cindy\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.V 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 shows the following message box upon execution:
Error Decompressing JPEG Picture
Information about the original VBS/Onthefly.A (also known as I-Worm.Lee.o and VBS/VBSWG) is available at: https://www.F-Secure.com/v-descs/onthefly.shtml
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