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Virus:Worm/VB.HA
Date discovered:18/06/2007
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:491.520 Bytes
MD5 checksum:24695f6ed46c2b89b5cf2476a956e3cf
VDF version:6.39.00.26 - Monday, June 18, 2007
IVDF version:6.39.00.26 - Monday, June 18, 2007

 General Method of propagation:
   • Email


Aliases:
   •  Mcafee: W32/Generic.m
   •  Sophos: W32/Traxg-H
   •  Bitdefender: Worm.Generic.82184
   •  Panda: W32/Hiberium.G.worm
   •  Eset: Win32/VB.NBB


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


Side effects:
   • Drops malicious files
   • Lowers security settings
   • Registry modification

 Files It copies itself to the following location:
   • %WINDIR%\FONTS\4648F.com



The following file is created:

– C:\net.txt



It tries to execute the following files:

– Filename:
   • %SYSDIR%\cmd /c net view >C:\net.txt


– Filename:
   • net view

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

– [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   • "TempCom"="%WINDIR%\FONTS\4648F.com"



The following registry keys are changed:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000000
   • "HideFileExt"=dword:0x00000001

– [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\
   Explorer\Advanced]
   New value:
   • "Hidden"=dword:0x00000000

– [HKEY_USERS\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\
   Explorer\CabinetState]
   New value:
   • "fullpath"=dword:0x00000001

 Email It uses Microsoft Outlook in order to send emails. The characteristics are described below:
It uses the Messaging Application Programming Interface (MAPI) in order to send emails. The characteristics are further described:


From:
The sender address is spoofed.


To:
– Email addresses found in specific files on the system.
– Email addresses gathered from WAB (Windows Address Book)


Body:
– Contains HTML code.


Attachment:

The attachment is a copy of the malware itself.

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


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 martes, 15 de febrero de 2011
Descripción actualizada por Petre Galan el martes, 15 de febrero de 2011

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