BDS/Rukap.BQ - Backdoor Server

See also

Summary

Full description

Statistics

Virus:	BDS/Rukap.BQ
Date discovered:	13/12/2006
Type:	Backdoor Server
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Medium
Static file:	Yes
File size:	82.432 Bytes
MD5 checksum:	ad2b75dfc3df41f89a6c100f0e2b7a05
VDF version:	6.35.01.100 - Wed, 16 Aug 2006 09:57 (GMT+1)
IVDF version:	6.35.01.101

General Method of propagation:
   • No own spreading routine

Aliases:
   • Mcafee: BackDoor-CZY
   • Kaspersky: Backdoor.Win32.Rukap.bq
   • Grisoft: BackDoor.Generic3.HPB
   • Eset: Win32/Rukap.BQ
   • Bitdefender: Backdoor.Rukap.BQ

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

Side effects:
   • Registry modification
   • Third party control

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

– [HKLM\SYSTEM\CurrentControlSet\Services\DirectRomp\Security]
   • "Security"=%hex values%

– [HKLM\SYSTEM\CurrentControlSet\Services\DirectRomp]
   • "Type"=dword:00000010
     "Start"=dword:00000002
     "ErrorControl"=dword:00000000
     "ImagePath"="%malware execution directory%/%executed file%"
     "DisplayName"="DirectX Service"
     "ObjectName"="LocalSystem"
     "Description"="Improve the performance of games and multimedia programs"

The following registry key is added:

– [HKLM\SOFTWARE\Microsoft\DirectRomp]
   • "luko"="%random character string%"

Backdoor The following port is opened:

– %malware execution directory%/%executed file% on TCP port 2773 in order to provide a Socks 5 proxy server.

Contact server:
All of the following:
   • http://www.ruspromotion.net/site/**********
   • http://www.clicking2rewards.com/**********
   • http://www.stormpay.com/**********
   • http://www.megacashclicks.net/**********

Once connected it will retrieve an additional list of servers.

Miscellaneous Anti debugging
It checks if the following file is present:
• SoftIce

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 the following runtime packer:
• PESpin

See a brief description here.

Description inserted by Monica Ghitun on Wed, 13 Dec 2006 15:25 (GMT+1)
Description updated by Monica Ghitun on Thu, 21 Dec 2006 15:11 (GMT+1)

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