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Virus Profile: WM/ZMB.A:DE

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Virus Profile information details
Risk Assessment: Home Low | Corporate Low
Date Discovered: 7/1/1997
Date Added: 7/15/1997
Origin: GERMANY
Length: Not Applicable
Type: Virus
Subtype: Macro
DAT Required: 4002
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

On an infected system the virus emulates the EXTRASMAKRO functionality. Warning: It is important not to use this command, as you will execute the viral code. When using the DATEISPEICHERN command on March 31 it will delete the files C:\CONFIG.SYS and C:\AUTOEXEC.BAT. Then a MessageBox like

- OsterhasenpolizeiX

Hallihallo . . . Ich bin der Osterhase und sage Dir, daß man an Ostern keinen Computer benutzen soll !!


OK

is displayed. When the DATEI|DRUCKEN command is used there is a [1]-in-[3] chance that it will run a text replace routine, most are pretty funny if you know German! There are 8 possible text replacement procedures:

1: Blut replaced by Sperm, heiß replaced by kalt.

2: hell replaced by dunkel, Lampe replaced by Schlampe, weich replaced by hart.

3: links replaced by rechts, linke replaced by rechte.

4: während replaced by werend, nämlich replaced by nehmlich, Produkt replaced by Quotient.

5: geehrte replaced by geährte, Damen replaced by Samen.

6: freundliche Grüßen replaced by stinkingen Füßen, Bestellung replaced by Bestehlung, Nase replaced by Vagina.

7: der replaced by das, dem replaced by wem.

8: die replaced by sie, Ihnen replaced by Dir.

It will always replace Rauschnabel with Sauschnabel.

Methods of Infection

General Macro Virus Information
   

Virus Characteristics

This virus propagates by infecting Word Documents in Microsoft WORD Versions 6.x / 7.x on Windows and Macintosh platforms. The virus consists of these macros:

AUTOOPEN, DATEIDRUCKEN, DATEISPEICHERN, EXTRASMAKRO

in an infected document. Their names change to:

ZMB, DATEIDRUCKEN, DATEISPEICHERN, EXTRASMAKRO

in Word's Global Template NORMAL.DOT. The virus becomes active by using AutoMacros. Its spreading activity remains only in the german language version of Microsoft Word. However, the virus may be able to execute its payload in another language version. All macros are encrypted using the standard Word execute-only feature. Meaning that the user is unable to edit or view the macro code. The virus can carry along other macros with it, so an infected file can potentially contain many macros.

   
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.