Virus Profile: W97M/Hope.p

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 2/1/2000
Date Added: 2/1/2000
Origin: N/A
Length: N/A
Type: Virus
Subtype: Macro
DAT Required: 4065
Removal Instructions
   
 
 
   

Description

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.

Indication of Infection

Modified Office Assistant on trigger date as mentioned above when opening infected documents, macro warning when opening infected documents on an non-infected system.

Methods of Infection

Opening infected documents and allowing the macro to run will directly infect the global template and any document used thereafter.

Aliases

W97M/Choong
   

Virus Characteristics

This is a very small class macro virus for Word97 documents and templates, and it does little more than spread from infected file to host system, and then on to other documents used on the machine. This virus will infect systems which have been updated to SR-1 update and higher.

The virus infection is called when opening infected documents due to a system event hooked named "Document_Open".

If day is equal to the month (e.g. Feburary 2, March 3, etc) and MS Office Assistant is installed, this virus changes the Office Assistant to say

"CheeChoong!!" "Have a great CheeChoong..."

   
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.

   

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