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NetSky.L

Classification

Category: Malware

Type: Email-Worm

Aliases: NetSky.L, W32/Netsky.L, I-Worm.Netsky.l

Summary


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

Removal


Automatic action

Once detected, the F-Secure security product will automatically handle a harmful program or file by either deleting or renaming it.

Eliminating a Local Network Outbreak

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

Knowledge Base

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About the product

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Submit a sample

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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.