Threat Description



Category: Malware
Type: Email-Worm
Platform: W32
Aliases: NetSky.L, W32/Netsky.L, I-Worm.Netsky.l


Another Netsky variant discovered on March 10th 2004. It drops itself as AVprotect.exe to Windows directory.


Automatic action

Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.

More scanning & removal options

More information on scanning or removal options is available in the documentation for your F-Secure security product on the Downloads section of our Home - Global site.

You may also refer to the Knowledge Base on the F-Secure Community site for further assistance.

Eliminating a Local Network Outbreak

If the infection is in a local network, please follow the instructions on this webpage:

Technical Details

This new variant is a stripped down version, just containing a minimum set of features and with no comments on the ongoing virus war.

It will create the following key to point to itself:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]  "HtProtect" = %sysdir%\AVprotect.exe  

And create a mutex named "Rabbo" so it's not run more than once.

Email Spreading

It will spread using any of the following subjects:

Re: Important  Re: Your document  Re: Your details  Re: Approved  

With message bodies from the list:

Your file is attached.  Please read the document.  Your document is attached.  Please read the attached file.  Please see the attached file for details.  

And with attachment names from:

your_file_%s.pif  details_%s.pif  document_%s.pif  

Where '%s' will be substituted by a text string.


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