BDS/HacDef.FV.1.A - Backdoor Server

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Summary

Full description

Statistics

Virus:	BDS/HacDef.FV.1.A
Date discovered:	27/07/2006
Type:	Backdoor Server
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	88.576 Bytes
MD5 checksum:	f2c34a56a33ee7a22e77a217f5c9e92b
VDF version:	6.35.01.08
IVDF version:	6.35.01.08

General Method of propagation:
   • No own spreading routine

Aliases:
   • Mcafee: BackDoor-DIZ
   • Kaspersky: Backdoor.Win32.HacDef.fw
   • F-Secure: Backdoor.Win32.HacDef.fw
   • Sophos: Troj/HacDef-DJ
   • Bitdefender: Backdoor.Hacdef.AG

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

Side effects:
   • Uses its own Email engine
   • Registry modification
   • Steals information
   • Third party control

Registry The following registry keys are added in order to load the services after reboot:

– HKLM\SYSTEM\CurrentControlSet\Services\SpoolSvc227
   • "Type"=dword:00000010
   • "Start"=dword:00000002
   • "ErrorControl"=dword:00000000
   • "ImagePath"="%malware execution directory%\%executed file% /service"
   • "DisplayName"="Print Spooler Service"
   • "ObjectName"="LocalSystem"

– HKLM\SYSTEM\CurrentControlSet\Services\SpoolSvc227\Enum
   • "0"="Root\LEGACY_SPOOLSVC227\0000"
   • "Count"=dword:00000001
   • "NextInstance"=dword:00000001

– HKLM\SYSTEM\CurrentControlSet\Services\SpoolSvc227\Security
   • "Security"=%hex values%

The following registry key is changed:

– HKLM\SYSTEM\ControlSet001\Control\ServiceCurrent
   Old value:
   • "(default)"=dword:0000000d
   New value:
   • "(default)"=dword:0000000e

Backdoor Contact server:
One of the following:
   • 143.215.**********:447(UDP)
   • 143.215.**********:447(UDP)
   • 207.44.**********:447(UDP)

As a result it may send information and remote control could be provided. Besides, it periodically repeats the connection.

Miscellaneous Mutex:
It creates the following Mutex:
• 135363240

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

See a brief description here.

Description inserted by Teodor Onisor on Mon, 02 Oct 2006 12:10 (GMT+1)
Description updated by Teodor Onisor on Mon, 02 Oct 2006 16:32 (GMT+1)

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