Content

W32/Storm.worm

Type
Virus
SubType
Internet Worm
Discovery Date
06/10/2001
Length
Several components; main one is 3342142 bytes.
Minimum DAT
4144 (06/20/2001)
Updated DAT
4281 (07/30/2003)
Minimum Engine
5.1.00
Description Added
06/11/2001
Description Modified
06/11/2001 10:33 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This worm arrives as a self-extracting ARJ archive 3342142 bytes long. The archive contains a copy of a Java environment, plus several .CLA files which perform the main worm functions. A BAT file executes the worm on startup. It tries to perform a denial of service against microsoft.com and mailbomb gates@microsoft.com

Symptoms

System slowdown.

Method of Infection

The worm scans random addresses for unprotected Microsoft IIS servers. It attempts to use an exploit to run its code on the server. If it succeeds it will extract the ARJ file to the c:\winnt\system32\storm directory and add a registry key to run c:\winnt\system32\storm\start.bat

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

    N/A

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.

Characteristics

Characteristics -

This worm arrives as a self-extracting ARJ archive 3342142 bytes long. The archive contains a copy of a Java environment, plus several .CLA files which perform the main worm functions. A BAT file executes the worm on startup. It tries to perform a denial of service against microsoft.com and mailbomb gates@microsoft.com

Symptoms

Symptoms -

System slowdown.

Method of Infection

Method of Infection -

The worm scans random addresses for unprotected Microsoft IIS servers. It attempts to use an exploit to run its code on the server. If it succeeds it will extract the ARJ file to the c:\winnt\system32\storm directory and add a registry key to run c:\winnt\system32\storm\start.bat

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 -

    N/A