Content

VBS/LoveLetter.bi

Type
Virus
SubType
Internet Worm
Discovery Date
09/20/2000
Length
4,976
Minimum DAT
4097 (09/27/2000)
Updated DAT
4097 (09/27/2000)
Minimum Engine
5.1.00
Description Added
09/20/2000
Description Modified
09/18/2002 1:00 PM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This is a VBScript Internet worm that travels via Outlook and mIRC. This worm may arrive by email with this detail:

Subject="Party Time"
Body="Hey!!.. Cloze the doorz coz we gonna party in 'ere all nite!! ;-)
Sweet demo coded in Visual Basic.. unleash the powerz of Mickey$oft!
Enjoy :-)"
Attachments="Party.BAS.vbs"

Opening the attachment infects systems which support Windows Scripting Host.

The worm makes the following changes:
- Changes the reported Windows version to "Mickey$oft Windowz v0.3"
- Changes the registered owner to "SiR DySTyK"
- Changes the registered organization to "VBS/Party"
- Creates the "PARTY0" sub directory in the Windows System directory and writes "PARTY1.vbs", "PARTY2.VBS", ... "PARTY50.VBS to it".
- Creates "C:\WINDOWS\START MENU\PROGRAMS\STARTUP\WINMGR.LNK.VBS" and "C:\WINDOWS\SYSTEM\PARTY.BAS.VBS"
- Overwrites "C:\MIRC\SCRIPT.INI" to automatically send itself out over mIRC.

Symptoms

On the first of the month a dialog box titled "VBS/Party" appears with the message "Hey!!.. Cloze the doorz coz we gonna party in 'ere ALL nite!! ;-)". The existence of the previously mentioned files.

Method of Infection

This worm uses Windows Scripting Host to write a .VBS file to the local machine, and then MAPI email Outlook to send email messages to entries listed in the Windows Address Book and mIRC to send to connected IRC channels.

Removal

All Users :
Script,Batch,Macro and non memory-resident:
Use current engine and DAT files for detection and removal.

PE,Trojan,Internet Worm and memory resident :
Use specified engine and DAT files for detection. To remove, boot to MS-DOS mode or use a boot diskette and use the command line scanner:

SCANPM /ADL /CLEAN /ALL

Additional Windows ME/XP removal considerations


Users should not trust file icons, particularly when receiving files from others via P2P clients, IRC, email or other mediums where users can share files.

AVERT Recommended Updates :

* Office2000 Updates

* Malformed Word Document Could Enable Macro to Run Automatically (Information/Patch )

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link .
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information .

It is very common for macro viruses to disable options within Office applications for example in Word, the macro protection warning commonly is disabled. After cleaning macro viruses, ensure that your previously set options are again enabled.

Variants

Variants

  • VBS/Loveletter.bk

All Information

Overview -

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Aliases

  • IRC/LoveLetter.bi
  • VBS/Party

Characteristics

Characteristics -

This is a VBScript Internet worm that travels via Outlook and mIRC. This worm may arrive by email with this detail:

Subject="Party Time"
Body="Hey!!.. Cloze the doorz coz we gonna party in 'ere all nite!! ;-)
Sweet demo coded in Visual Basic.. unleash the powerz of Mickey$oft!
Enjoy :-)"
Attachments="Party.BAS.vbs"

Opening the attachment infects systems which support Windows Scripting Host.

The worm makes the following changes:
- Changes the reported Windows version to "Mickey$oft Windowz v0.3"
- Changes the registered owner to "SiR DySTyK"
- Changes the registered organization to "VBS/Party"
- Creates the "PARTY0" sub directory in the Windows System directory and writes "PARTY1.vbs", "PARTY2.VBS", ... "PARTY50.VBS to it".
- Creates "C:\WINDOWS\START MENU\PROGRAMS\STARTUP\WINMGR.LNK.VBS" and "C:\WINDOWS\SYSTEM\PARTY.BAS.VBS"
- Overwrites "C:\MIRC\SCRIPT.INI" to automatically send itself out over mIRC.

Symptoms

Symptoms -

On the first of the month a dialog box titled "VBS/Party" appears with the message "Hey!!.. Cloze the doorz coz we gonna party in 'ere ALL nite!! ;-)". The existence of the previously mentioned files.

Method of Infection

Method of Infection -

This worm uses Windows Scripting Host to write a .VBS file to the local machine, and then MAPI email Outlook to send email messages to entries listed in the Windows Address Book and mIRC to send to connected IRC channels.

Removal -

Removal -

All Users :
Script,Batch,Macro and non memory-resident:
Use current engine and DAT files for detection and removal.

PE,Trojan,Internet Worm and memory resident :
Use specified engine and DAT files for detection. To remove, boot to MS-DOS mode or use a boot diskette and use the command line scanner:

SCANPM /ADL /CLEAN /ALL

Additional Windows ME/XP removal considerations


Users should not trust file icons, particularly when receiving files from others via P2P clients, IRC, email or other mediums where users can share files.

AVERT Recommended Updates :

* Office2000 Updates

* Malformed Word Document Could Enable Macro to Run Automatically (Information/Patch )

* scriptlet.typelib/Eyedog vulnerability patch

* Outlook as an email attachment security update

* Exchange 5.5 post SP3 Information Store Patch 5.5.2652.42 - this patch corrects detection issues with GroupShield

For a list of attachments blocked by the Outlook patch and a general FAQ, visit this link .
Additionally, Network Administrators can configure this update using an available tool - visit this link for more information .

It is very common for macro viruses to disable options within Office applications for example in Word, the macro protection warning commonly is disabled. After cleaning macro viruses, ensure that your previously set options are again enabled.

Variants

Variants -

  • VBS/Loveletter.bk