My library

+ Add to library

Contact us
24/7 Tech support | Rules regarding submitting

Send a message

Your tickets



Added to the Dr.Web virus database: 2012-01-31

Virus description added:

Technical Information

To ensure autorun and distribution:
Creates the following files on removable media:
  • <Drive name for removable media>:\quoxf.pif
  • <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\winlogon.exe' = '<SYSTEM32>\winlogon.exe:*:enabled:@shell32.dll,-1'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:ipsec'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
blocks execution of the following system utilities:
  • Windows Task Manager (Taskmgr)
  • Registry Editor (RegEdit)
blocks the following features:
  • User Account Control (UAC)
  • Windows Security Center
Injects code into
the following system processes:
  • <SYSTEM32>\cscript.exe
a large number of user processes.
Modifies file system :
Creates the following files:
  • %TEMP%\winpqgi.exe
Sets the 'hidden' attribute to the following files:
  • <Drive name for removable media>:\quoxf.pif
  • <Drive name for removable media>:\autorun.inf
Deletes the following files:
  • %TEMP%\winpqgi.exe
Network activity:
Connects to:
  • '':80
  • '<Private IP address>':1038
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: ''
The Russian developer of Dr.Web anti-viruses
Doctor Web has been developing anti-virus software since 1992
Dr.Web is trusted by users around the world in 200+ countries
The company has delivered an anti-virus as a service since 2007
24/7 tech support

Dr.Web © Doctor Web
2003 — 2021

Doctor Web is a Russian cybersecurity company focused on threat detection, prevention and response technologies.