TR/Vundo.MD - Trojan

See also

Summary

Full description

Statistics

Virus:	TR/Vundo.MD
Date discovered:	13/11/2008
Type:	Trojan
In the wild:	Yes
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	No
File size:	~ 26.000 Bytes
IVDF version:	7.01.00.83 - Thu, 13 Nov 2008 17:37 (GMT+1)

General Method of propagation:
   • No own spreading routine

Aliases:
   • Kaspersky: Trojan.Win32.Agent.anyk
   • TrendMicro: TROJ_VUNDO.SC
   • F-Secure: Trojan:W32/Vundo.BL
   • Bitdefender: Trojan.Vundo.FYD

Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003

Side effects:
   • Registry modification

Files It copies itself to the following location:
• %SYSDIR%\%eight-digit random character string%.dll

It deletes the initially executed copy of itself.

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

– [HKCR\CLSID\{73259091-9574-4ED8-A40F-7F65AFC28634}\InprocServer32]
   • @="%SYSDIR%\%eight-digit random character string%.dll"
   • "ThreadingModel"="Both"

The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Notify\
   %eight-digit random character string%]
   • "Asynchronous"=dword:00000001
   • "DllName"="%eight-digit random character string%.dll"
   • "Impersonate"=dword:00000000
   • "Logon"="o"
   • "Logoff"="f"

File details Programming language:
The malware program was written in MS Visual C++.

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

See a brief description here.

Description inserted by Thomas Wegele on Mon, 24 Nov 2008 13:24 (GMT+1)
Description updated by Thomas Wegele on Mon, 24 Nov 2008 13:31 (GMT+1)

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