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
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

Description inserted by Monica Ghitun on Wednesday, December 13, 2006
Description updated by Monica Ghitun on Thursday, December 21, 2006

Back . . . .