Full description

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.

説明の挿入者 Petre Galan の 2011年2月15日火曜日
説明の更新者 Petre Galan の 2011年2月15日火曜日

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