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Virus:Worm/Palevo.rxq
Date discovered:19/02/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low to medium
Damage Potential:Low to medium
Static file:Yes
File size:245.255 Bytes
MD5 checksum:254a774804a9725598879cda91d12171
IVDF version:7.10.04.102 - Friday, February 19, 2010

 General Method of propagation:
    Autorun feature


Aliases:
   •  Sophos: Troj/Nyrate-L
   •  Panda: W32/P2PWorm.HS.worm
   •  Eset: Win32/Peerfrag.FD
   •  Bitdefender: Trojan.Dropper.Agent.UXA


Platforms / OS:
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following location:
   • %drive%\RECYCLER\%CLSID%\wmfcgr.exe



The following files are created:

%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%

%drive%\RECYCLER\%CLSID%\Desktop.ini

 Registry One of the following values is added in order to run the process after reboot:

  [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%recycle bin%\%CLSID%\wmfcgr.exe"

 P2P    It retrieves shared folders by querying the following registry keys:
   • Software\BearShare\General
   • Software\iMesh\General
   • Software\Shareaza\Shareaza\Downloads
   • Software\Kazaa\LocalContent
   • Software\DC++
   • Software\eMule
   • Software\Microsoft\Windows\CurrentVersion\Uninstall\eMule Plus_is1

   It searches for directories that contain the following substring:
   • \Local Settings\Application Data\Ares\My Shared Folder


 Messenger It is spreading via Messenger. The characteristics are described below:

 MSN Messenger

The URL then refers to a copy of the described malware. If the user downloads and executes this file the infection process will start again.

 Backdoor The following ports are opened:

love.dm**********.com on UDP port 6061
love.un**********.com on UDP port 6061
love.bl**********.net on UDP port 6061

 Injection It injects itself as a remote thread into a process.

    Process name:
   • explorer.exe


 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Petre Galan on Thursday, April 8, 2010
Description updated by Petre Galan on Thursday, April 8, 2010

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