Threat Description

P2P-Worm:W32/Bacteraloh

Details

Aliases:P2P-Worm:W32/Bacteraloh, P2P-Worm.Win32.Bacteraloh, Win32.Sality
Category:Malware
Type:P2P-Worm
Platform:W32

Summary



A type of worm that spreads over Peer-to-Peer (P2P) networks.



Removal


Automatic action

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

More

You may wish to refer to the Support Community for further assistance. You also may also refer to General Removal Instructions for a general guide on alternative disinfection actions.



Technical Details



P2P-Worm.Win32.Bacteraloh is a family of P2P-Worms similar to P2P.Worm.Win32.Backterra. Unlike Backterra, Bacteraloh variants may have the additional functionality of dropping Virus.Win32.Sality variants. For a description of Sality, please see our description of Virus.Win32.Sality.Q

Distribution

Bacteraloh spreads through file-sharing networks (primarily Emule) by disguising itself as a software crack. To give credibility to the illusion, when executed the worm will display a fake interface and a dialog box with the message "Missing MFClibary.dll", as seen in the samples below:

Installation

The Bateraloh variants that include functionality to install Virus.Win32.Sality will drop a standalone DLL in the folder %system32%. The DLL file is then injected into running processes. If Emule file sharing software is detected, Bacteraloh will create multiple copies of itself in:

  • C:\Windows\Temp\Bactera\Â

The copies are labeled using names selected from a long list. The names are mostly in the following format:

  • Crack & Keygen all Versions e.g., Spacetanks Crack & Keygen all Versions
  • Crack & Keygen and all lower versions e.g., Winamp 5.112 Pro and all lower Versions Crack & Keygen





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