Date discovered:31/08/2009
In the wild:Yes
Reported Infections:Low to medium
Distribution Potential:Low
Damage Potential:Low to medium
Static file:Yes
File size:57.344 Bytes
MD5 checksum:9106346b9e74cc1f89196e881af87d73
VDF version:
IVDF version:

 General Aliases:
   •  Mcafee: W32/Autorun.worm.h
   •  Kaspersky: IM-Worm.Win32.VB.ly
   •  Sophos: Mal/CoiDung-A
   •  Bitdefender: Worm.Generic.39086
   •  Panda: W32/CogDuni.F.worm
   •  GData: Worm.Generic.39086

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

Side effects:
   • Drops malicious files
   • Registry modification

 Files It copies itself to the following locations:
   • %SYSDIR%\config\Win.exe
   • %WINDIR%\Help\Other.exe
   • %WINDIR%\dc.exe
   • %WINDIR%\inf\Other.exe
   • %SYSDIR%\Fun.exe
   • %SYSDIR%\WinSit.exe

The following file is created:


It tries to execute the following files:

– Filename:
   • %SYSDIR%\Fun.exe

– Filename:

– Filename:
   • %WINDIR%\dc.exe

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

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   • "Fun"="%SYSDIR%\Fun.exe"
   • "dc"="%WINDIR%\dc.exe"
   • "dc2k5"="%WINDIR%\SVIQ.EXE"

The following registry key is added:

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows]
   • "run"="%SYSDIR%\config\Win.exe"

The following registry keys are changed:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
   New value:
   • "shell"="Explorer.exe %SYSDIR%\WinSit.exe"

– [HKCU\Software\Microsoft\Windows NT\CurrentVersion\Windows]
   New value:
   • "load"="%WINDIR%\inf\Other.exe"

 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3月18日金曜日
説明の更新者 Petre Galan の 2011年3月18日金曜日

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