Full description

Virus:	Worm/Palevo.xbq
Date discovered:	12/05/2010
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:	124.416 Bytes
MD5 checksum:	040ba5e0c51e2d63121d56d43310624a
IVDF version:	7.10.07.96 - Wednesday, May 12, 2010

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

Aliases:
   • Bitdefender: Trojan.Generic.3909288
   • Panda: Adware/BHO.HD
   • Eset: Win32/Peerfrag.FD

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

Side effects:
   • Drops malicious files
   • Registry modification

Files It copies itself to the following locations:
   • %recycle bin%\%CLSID%\mgrls32.exe
   • %drive%\RECYCLER\autorun.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%

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%\mgrls32.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:

– Windows Live 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 port is opened:

– cd.eva**********.biz on UDP port 8811

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.

說明撰寫者 Petre Galan 開啟 2010年9月28日星期二
說明更新者 Petre Galan 開啟 2010年9月28日星期二

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