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Virus:Worm/Palevo.vom
Date discovered:05/03/2010
Type:Worm
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Medium
Damage Potential:Low to medium
Static file:Yes
File size:192.512 Bytes
MD5 checksum:b91cf5a837c1f7fe459bd5cdfe079dcf
IVDF version:7.10.04.230 - Friday, March 5, 2010

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


Aliases:
   •  Mcafee: Generic.dx
   •  Sophos: Mal/VBInject-D
   •  Panda: W32/MSNWorm.HV
   •  Eset: Win32/Peerfrag.FL
   •  Bitdefender: Worm.Generic.232328


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


Side effects:
   • Downloads malicious files
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %recycle bin%\%CLSID%\yv8g67.exe
   • %drive%\Docs\print.exe



The following files are created:

– %recycle bin%\%CLSID%\Desktop.ini
%drive%\autorun.inf This is a non malicious text file with the following content:
   • %code that runs malware%




It tries to download some files:

– The location is the following:
   • http://76.76.99.186:53651/**********


– The location is the following:
   • http://193.104.186.88:26812/**********


– The location is the following:
   • http://193.104.186.88:26812/**********

 Registry The following registry key is added in order to run the process after reboot:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   • "Taskman"="%recycle bin%\%CLSID%\yv8g67.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.

 Backdoor The following ports are opened:

– f5v**********.com on UDP port 443
– f5v**********.com on UDP port 5190

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

    Process name:
   • explorer.exe


 File details Programming language:
The malware program was written in Visual Basic.

Descrição enviada por Petre Galan em sexta-feira, 2 de julho de 2010
Descrição atualizada por Petre Galan em sexta-feira, 2 de julho de 2010

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