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Profil

BackDoor.IRC.Bot.267

Added to the Dr.Web virus database: 2010-03-19

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ctfmon.exe] 'Debugger' = 'winupd01.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = 'ctfmon.exe'
Creates the following files on removable media:
  • <Drive name for removable media>:\Autorun.inf
  • <Drive name for removable media>:\scan\scan.com
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\winupd01.exe' = '<SYSTEM32>\winupd01.exe:*:Enabled:DHCP Router'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\winupd01.exe' = '<SYSTEM32>\winupd01.exe:*:Enabled:DHCP Router'
Creates and executes the following:
  • '<SYSTEM32>\winupd01.exe' <Full path to virus>
Executes the following:
  • '<SYSTEM32>\sc.exe' delete OutpostFirewall
  • '<SYSTEM32>\net1.exe' stop OutpostFirewall
  • '<SYSTEM32>\sc.exe' config OutpostFirewall start= disabled
  • '<SYSTEM32>\net.exe' stop OutpostFirewall
  • '<SYSTEM32>\sc.exe' stop OutpostFirewall
  • '<SYSTEM32>\net.exe' stop TmPfw
  • '<SYSTEM32>\net1.exe' stop TmPfw
  • '<SYSTEM32>\net.exe' stop KPF4
  • '<SYSTEM32>\sc.exe' delete TmPfw
  • '<SYSTEM32>\sc.exe' stop TmPfw
  • '<SYSTEM32>\sc.exe' config TmPfw start= disabled
  • '<SYSTEM32>\sc.exe' config ekrn start= disabled
  • '<SYSTEM32>\net1.exe' stop ekrn
  • '<SYSTEM32>\sc.exe' stop ekrn
  • '<SYSTEM32>\sc.exe' delete NOD32krn
  • '<SYSTEM32>\net.exe' stop ekrn
  • '<SYSTEM32>\sc.exe' delete ekrn
  • '<SYSTEM32>\net1.exe' stop McShield
  • '<SYSTEM32>\sc.exe' delete McShield
  • '<SYSTEM32>\sc.exe' config McShield start= disabled
  • '<SYSTEM32>\net.exe' stop McShield
  • '<SYSTEM32>\sc.exe' stop McShield
  • '<SYSTEM32>\ipconfig.exe' /pid=3636
  • '<SYSTEM32>\sc.exe' /pid=1376
  • '<SYSTEM32>\net1.exe' /C sc stop vsmon
  • '<SYSTEM32>\sc.exe' config cmdAgent start= disabled
  • '<SYSTEM32>\sc.exe' /C sc delete cmdAgent
  • '<SYSTEM32>\sc.exe' /pid=2528
  • '<SYSTEM32>\net1.exe' stop cmdAgent
  • '<SYSTEM32>\sc.exe' /pid=988
  • '<SYSTEM32>\sc.exe' stop vsmon
  • '<SYSTEM32>\net.exe' stop vsmon
  • '<SYSTEM32>\sc.exe' delete cmdAgent
  • '<SYSTEM32>\sc.exe' /pid=3776
  • '<SYSTEM32>\net1.exe' stop KPF4
  • '<SYSTEM32>\sc.exe' /pid=3692
  • '<SYSTEM32>\sc.exe' delete KPF4
  • '<SYSTEM32>\sc.exe' stop KPF4
  • '<SYSTEM32>\sc.exe' config KPF4 start= disabled
  • '<SYSTEM32>\net.exe' stop SmcService
  • '<SYSTEM32>\sc.exe' /C sc config cmdAgent start= disabled
  • '<SYSTEM32>\sc.exe' delete SmcService
  • '<SYSTEM32>\sc.exe' /C net stop cmdAgent
  • '<SYSTEM32>\sc.exe' stop SmcService
  • '<SYSTEM32>\sc.exe' config SmcService start= disabled
  • '<SYSTEM32>\net1.exe' stop "avast! Antivirus"
  • '<SYSTEM32>\sc.exe' delete "avast! Antivirus"
  • '<SYSTEM32>\sc.exe' config "avast! Antivirus" start= disabled
  • '<SYSTEM32>\net.exe' stop "avast! Antivirus"
  • '<SYSTEM32>\sc.exe' stop "avast! Antivirus"
  • '<SYSTEM32>\net.exe' stop AntiVirService
  • '<SYSTEM32>\net1.exe' stop AntiVirService
  • '<SYSTEM32>\net.exe' stop PASRV
  • '<SYSTEM32>\sc.exe' delete AntiVirService
  • '<SYSTEM32>\sc.exe' stop AntiVirService
  • '<SYSTEM32>\sc.exe' config AntiVirService start= disabled
  • '<SYSTEM32>\sc.exe' stop K7RTScan
  • '<SYSTEM32>\net1.exe' stop K7RTScan
  • '<SYSTEM32>\net.exe' stop K7RTScan
  • '<SYSTEM32>\ipconfig.exe' /flushdns
  • '<SYSTEM32>\sc.exe' config K7RTScan start= disabled
  • '<SYSTEM32>\sc.exe' delete K7RTScan
  • '<SYSTEM32>\sc.exe' delete K7TSMngr
  • '<SYSTEM32>\net1.exe' stop K7TSMngr
  • '<SYSTEM32>\sc.exe' stop K7TSMngr
  • '<SYSTEM32>\net.exe' stop K7TSMngr
  • '<SYSTEM32>\sc.exe' config K7TSMngr start= disabled
  • '<SYSTEM32>\sc.exe' stop PASRV
  • '<SYSTEM32>\sc.exe' stop avg9wd
  • '<SYSTEM32>\sc.exe' config avg9wd start= disabled
  • '<SYSTEM32>\net.exe' stop avg9wd
  • '<SYSTEM32>\sc.exe' delete avg8wd
  • '<SYSTEM32>\net1.exe' stop avg8wd
  • '<SYSTEM32>\net1.exe' stop avg9wd
  • '<SYSTEM32>\sc.exe' config NOD32krn start= disabled
  • '<SYSTEM32>\net1.exe' stop NOD32krn
  • '<SYSTEM32>\sc.exe' stop NOD32krn
  • '<SYSTEM32>\sc.exe' delete avg9wd
  • '<SYSTEM32>\net.exe' stop NOD32krn
  • '<SYSTEM32>\net.exe' stop VSSERV
  • '<SYSTEM32>\sc.exe' stop VSSERV
  • '<SYSTEM32>\net1.exe' stop PASRV
  • '<SYSTEM32>\sc.exe' config PASRV start= disabled
  • '<SYSTEM32>\sc.exe' delete PASRV
  • '<SYSTEM32>\sc.exe' config VSSERV start= disabled
  • '<SYSTEM32>\sc.exe' stop avg8wd
  • '<SYSTEM32>\sc.exe' config avg8wd start= disabled
  • '<SYSTEM32>\net.exe' stop avg8wd
  • '<SYSTEM32>\sc.exe' delete VSSERV
  • '<SYSTEM32>\net1.exe' stop VSSERV
Injects code into
the following system processes:
  • <SYSTEM32>\net.exe
  • <SYSTEM32>\net1.exe
  • <SYSTEM32>\cmd.exe
  • %WINDIR%\Explorer.EXE
  • <SYSTEM32>\sc.exe
Terminates or attempts to terminate
the following user processes:
  • ntvdm.exe
  • GUARD.EXE
Hides the following processes:
  • <SYSTEM32>\winupd01.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\usb[1]
  • <SYSTEM32>\winupd01.exe
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\upd[1]
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\winupd01.exe
Deletes itself.
Network activity:
Connects to:
  • 'us#.#verapo.ru':80
  • 'av####1.everapo.ru':7575
  • 'up#.#verapo.ru':80
TCP:
HTTP GET requests:
  • us#.#verapo.ru/usb
  • up#.#verapo.ru/upd
UDP:
  • DNS ASK us#.#verapo.ru
  • DNS ASK av####1.everapo.ru
  • DNS ASK up#.#verapo.ru

Curing recommendations

  1. If the operating system (OS) can be loaded (either normally or in safe mode), download Dr.Web Security Space and run a full scan of your computer and removable media you use. More about Dr.Web Security Space.
  2. If you cannot boot the OS, change the BIOS settings to boot your system from a CD or USB drive. Download the image of the emergency system repair disk Dr.Web® LiveDisk , mount it on a USB drive or burn it to a CD/DVD. After booting up with this media, run a full scan and cure all the detected threats.
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Download by serial number

Use Dr.Web Anti-virus for macOS to run a full scan of your Mac.

After booting up, run a full scan of all disk partitions with Dr.Web Anti-virus for Linux.

Download Dr.Web

Download by serial number

  1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
  2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
    • Load your smartphone or tablet in the safe mode (depending on the operating system version and specifications of the particular mobile device involved, this procedure can be performed in various ways; seek clarification from the user guide that was shipped with the device, or contact its manufacturer);
    • Once you have activated safe mode, install the Dr.Web for Android onto the infected handheld and run a full scan of the system; follow the steps recommended for neutralizing the threats that have been detected;
    • Switch off your device and turn it on as normal.

Find out more about Dr.Web for Android