Threat Description

LoveLetter.G

Details

Aliases: LoveLetter.G
Category: Malware
Type: Worm
Platform: VBS

Summary


This variant of Email-Worm:VBS/Loveletter is distributed as an infectious e-mail file attachment.



Removal


Automatic action

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

More

Detailed instructions for F-Secure security products are available in the documentation found in the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.



Technical Details


VBS/LoveLetter.G is similar to the original VBS/LoveLetter.A virus.

This variant sends a message that seems to originate from Symantec's support. This is not true. The message looks like the following:

Subject:    Virus ALERT!!!     From:       support@symantec.com     Body:       Dear Symantec customer, 	Symantec's AntiVirus Research Center began receiving     reports regarding VBS.LoveLetter.A virus early morning on     May 4, 2000 GMT.     This worm appears to originate from the Asia Pacific     region. Distribution of the virus is widespread and     hundreds of thousands of machines are reported infected.     The VBS.LoveLetter.A is an Internet worm that uses     Microsoft Outlook to e-mail itself as an attachment.     The subject line of the e-mail reads ILOVEYOU, with the     attachment titled LOVE-LETTER-FOR-YOU.TXT.VBS. Once the     attachment is opened, the virus replicates and sends an     e-mail to all e-mail addresses listed in the address book.     The virus also spreads itself via Internet relay chat and     infects files on local and remote drives including files     with extensions vbs, vbe, js, sje, css, wsh, sct, hta, jpg,     jpeg, mp3, mp2.     Users should exercise caution when opening e-mails with     this subject line, even if the e-mail is from someone they     know, as that is how the virus is spread.     Symantec Corp. today announced availability of the virus     definition to detect, repair and protect users against the     VBS.LoveLetter.A virus.     This definition is available now via Symantec's LiveUpdate     and can also be downloaded from the following web sites:     http://www.symantecstore.com/AF74211/promo/loveletter     http://www.digitalriver.com/symantec 	Also as a quick solution Symantec Corp. offers Visual Basic     Script to protect your PC against this worm. (See     attached.) 	Note! When executed, this script will protect Your PC from     being INFECTED by VBS.LoveLetter.A virus. 	To cure already infected PC's download Norton Antivirus     Updates mentioned above. 	Symantec Corporation - a world leader in internet security technology.     Attachment: protect.vbs 	 	

This variant changes the Internet Explorer start page to point to an adult site. The default search page is set to point to a hacker site.

The virus creates a new file with the same name for the files with the following extensions: ".js", ".jse", ".css", ".wsh", ".sct", ".hta", ".com" and ".bat", but using the extension ".vbs". The original file will be deleted. Since all ".com" files have been removed, the system cannot be restarted.

This variant does not attempt to download the "WIN-BUGSFIX.exe".





Technical Details:Katrin Tocheva, Mikko Hypponen, Alexey Podrezov and Sami Rautiainen, F-Secure


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