This page shows details and results of our analysis on the malware W32/Begemot

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Threat Detail

  • Malware Type: Virus
  • Malware Sub-type: Win9x
  • Protection Added: 1999-10-17

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.

Minimum Engine


File Length

8,192 bytes

Description Added


Description Modified


Malware Proliferation

This is a memory resident 32bit virus for Windows 9x environments. Due to bugs in the code, this virus is not infectious to WinNT systems however such a system can host an infected file (shared resource).

This virus contains two structures, one for infecting host files and another for being controlled by a client component.

This virus will infect .RAR archive files by "injecting" an infected executable into the archive.

Increase in size of infected executables, possible errors or failures of infected executables.

This virus will reside in memory to infect new host files.

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:


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.