Virus Profile: X97M/Barisada.a

Threat Search
Print
   
Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 5/31/2000
Date Added: 6/5/2000
Origin: N/A
Length: N/A
Type: Virus
Subtype: Macro
DAT Required: 4081
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

Existence of the file HJB.XLS in the XLSTART folder.

If an infected workbook is used on April 24 and the time is 2:00 PM, the series of question and answer message boxes will be displayed. If the user responds "incorrectly", a sheet clearing payload will be invoded. Below are the questions with resulting action (typos are included):

"1st Qusetion"
"Question : What is the Sword Which Karl Styner(=Gray Scavenger) used?"
"Answer : Barisada"
[Yes] [No]

The "correct" response is [Yes]. If [No] is chosen, this message box is displayed:

"Wrong Answer"
"I wil give you one more Chance. Be careful!!"
[OK]

"Wrong Answer may cause The Serious Problem!"
"Summoning Xavier is the Ultimate Magic. Right?"
[Yes] [No]

The "correct" response is [Yes]. If [No] is chosen, this message box is displayed:

"You shall Die"
"Wrong Answer, Your file will be deleted!"
[OK]

After pressing the [OK] box, all worksheets of all opened workbooks are cleared of their data contents.

Methods of Infection

Opening infected workbooks will copy a dropper file to the XLSTART folder as HJB.XLS. Any workbook used or created there after will become infected.

This virus hooks an Excel event handler thereby running its code. It will infect every worksheet of a host workbook.

Aliases

Barisada, HJB.XLS, X97M.HJB, X97M/Barisada.gen, X97M/HJB
   

Virus Characteristics

This is a class module macro virus for Excel97/2000 workbooks. This virus contains a date activated payload which clears cell data in all worksheets.

This virus will copy itself to the XLSTART folder as "HJB.XLS" where it will load when Excel is initiated.

Variants

Variants information
Virus Name Type Subtype Differences
X97M/Barisada.b Virus Macro Discovered Aug 9, 2000
Creates RMC.XLS, requires 4091 DAT
   
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.

   

PC Infected? Get Expert Help

McAfee
Virus Removal Service

Connect to one of our Security Experts by phone. Have your PC fixed remotely - while you watch!

$89.95