Virus:TR/Qhost.DX
Date discovered:08/08/2006
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:Low
Static file:Yes
File size:70.430 Bytes
MD5 checksum:f2c8f3d57303da99ed78794aef576c28
VDF version:6.35.00.192
IVDF version:6.35.00.232

 General Method of propagation:
   • No own spreading routine


Alias:
   •  Bitdefender: Trojan.QHost.A


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


Side effects:
   • Blocks access to certain websites
   • Registry modification

 Registry The following registry key is added:

– [HKCU\Software\WinRAR SFX]
   • C%%WINDOWS%system32%drivers%etc="%SYSDIR%\drivers\etc"

 Hosts The host file is modified as explained:

– In this case existing entries are deleted.

– Access to the following domains is effectively blocked:
   • myjh.go.3322.org
   • myrx.go.3322.org
   • hqjt.xmu.edu.cn
   • www.cn-dadi.com
   • www.kosoft.cn
   • www.kosoft.com
   • jhost.go.3322.org
   • webhop.3322.org
   • jhgo.go.3322.org
   • myfb.go.3322.org
   • file3.qqhelper.com
   • file2.qqhelper.com
   • file.qqhelper.com
   • qqhelper.com
   • www.qqhelper.com




The modified host file will look like this:


 File details Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • EXEStealth

Description inserted by Monica Ghitun on Tuesday, August 8, 2006
Description updated by Monica Ghitun on Tuesday, August 8, 2006

Back . . . .