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Virus:Worm/Palevo.kvb
Date discovered:27/11/2009
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Medium
Damage Potential:Low to medium
Static file:Yes
File size:135.680 Bytes
MD5 checksum:1b8c861b18ffe409af18b0eea724ec26
IVDF version:7.10.01.112 - Friday, November 27, 2009

 General Method of propagation:
   • Autorun feature
   • Messenger
   • Peer to Peer


Aliases:
   •  Panda: W32/P2PWorm.HS.worm
   •  Eset: Win32/Peerfrag.FA
   •  Bitdefender: Trojan.Generic.2717368


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


Side effects:
   • Drops malicious files

 Files It copies itself to the following location:
   • %drive%\RECYCLER\%CLSID%\ww32.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 –  [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%recycle bin%\%CLSID%\ww32.exe"

 P2P In order to infect other systems in the Peer to Peer network community the following action is performed:   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.

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

    Process name:
   • explorer.exe


 Miscellaneous Internet connection:

It queries with the following names:
   • www.godown.ch
   • www.radines.ch
   • www.maxisex.ch

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

Descripción insertada por Petre Galan el jueves, 8 de abril de 2010
Descripción actualizada por Petre Galan el jueves, 8 de abril de 2010

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