Home > Threat descriptions >



Category: Malware

Type: Net-Worm

Aliases: Net-Worm:W32/Lovsan.F


The new F variant of Net-Worm:W32/Lovsan was found on September 1st, 2003. According to news reports, the author of this worm was caught in România on 3rd of September, 2003.


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

Find the latest advice in our Community Knowledge Base.

About the product

See the manual for your F-Secure product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

This variant is functionally identical to Lovsan.A, with a few minor differences:

  • It uses the file name enbiei.exe instead of MSBLAST.EXE.
  • It uses a different MUTEX name: 'muuie'
  • The Distributed Denial of Service (DDoS) attack target has been changed to 'tuiasi.ro' which does not resolve so the attack will not be effective. The address 'www.tuiasi.ro' contains the website of the Technical University of Iasi, România
  • The registry value used has been changed to:
    • 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\www.hidro.4t.com'

It has a different hidden message in Românian:

 Nu datzi la fuckultatea de Hidrotehnica!

!!Pierdetzi timp ul degeaba...Birsan te cheama pensia!!!
 Ma pis pe diploma!!!!!!.

Which translates to English as:

Don't go to the Hydrotechnics faculty!!!
 You are wasting time...Barsan, the retirement wants you!!!

 F*** the diploma!!!!!!

(English translation is courtesy of Costin Raiu of Kaspersky Labs.)