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Profil

BackDoor.IRC.Bot.368

Added to the Dr.Web virus database: 2012-05-26

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' = 'MsRxClient.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>:\~temp\645846.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\MsRxClient.exe' = '<SYSTEM32>\MsRxClient.exe:*:Enabled:LAN Router'
  • [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\MsRxClient.exe' = '<SYSTEM32>\MsRxClient.exe:*:Enabled:LAN Router'
Creates and executes the following:
  • <SYSTEM32>\MsRxClient.exe <Full path to virus>
Executes the following:
  • <SYSTEM32>\sc.exe stop cmdAgent
  • <SYSTEM32>\sc.exe config cmdAgent start= disabled
  • <SYSTEM32>\net1.exe stop cmdAgent
  • <SYSTEM32>\net.exe stop cmdAgent
  • <SYSTEM32>\sc.exe config SmcService start= disabled
  • <SYSTEM32>\net1.exe stop SmcService
  • <SYSTEM32>\sc.exe delete SmcService
  • <SYSTEM32>\net1.exe stop vsmon
  • <SYSTEM32>\sc.exe delete vsmon
  • <SYSTEM32>\net.exe stop SbPF.Launcher
  • <SYSTEM32>\sc.exe config vsmon start= disabled
  • <SYSTEM32>\sc.exe delete cmdAgent
  • <SYSTEM32>\net.exe stop vsmon
  • <SYSTEM32>\sc.exe stop vsmon
  • <SYSTEM32>\sc.exe config TmPfw start= disabled
  • <SYSTEM32>\net1.exe stop TmPfw
  • <SYSTEM32>\sc.exe delete TmPfw
  • <SYSTEM32>\sc.exe stop TmPfw
  • <SYSTEM32>\net1.exe stop OutpostFirewall
  • <SYSTEM32>\sc.exe delete OutpostFirewall
  • <SYSTEM32>\net.exe stop TmPfw
  • <SYSTEM32>\sc.exe delete KPF4
  • <SYSTEM32>\net.exe stop SmcService
  • <SYSTEM32>\sc.exe stop SmcService
  • <SYSTEM32>\net1.exe stop KPF4
  • <SYSTEM32>\net.exe stop KPF4
  • <SYSTEM32>\sc.exe stop KPF4
  • <SYSTEM32>\sc.exe config KPF4 start= disabled
  • <SYSTEM32>\sc.exe stop SbPF.Launcher
  • <SYSTEM32>\net.exe stop SAVAdminService
  • <SYSTEM32>\sc.exe stop SAVAdminService
  • <SYSTEM32>\sc.exe config SAVAdminService start= disabled
  • <SYSTEM32>\sc.exe delete SAVService
  • <SYSTEM32>\sc.exe stop SAVService
  • <SYSTEM32>\sc.exe config SavService start= disabled
  • <SYSTEM32>\net1.exe stop SAVService
  • <SYSTEM32>\sc.exe config "Sophos AutoUpdate Service" start= disabled
  • <SYSTEM32>\net1.exe stop "Sophos AutoUpdate Service"
  • <SYSTEM32>\sc.exe delete "Sophos AutoUpdate Service"
  • <SYSTEM32>\sc.exe stop "Sophos AutoUpdate Service"
  • <SYSTEM32>\net1.exe stop SAVAdminService
  • <SYSTEM32>\sc.exe delete SAVAdminService
  • <SYSTEM32>\net.exe stop "Sophos AutoUpdate Service"
  • <SYSTEM32>\sc.exe stop SPF4
  • <SYSTEM32>\sc.exe config SPF4 start= disabled
  • <SYSTEM32>\net1.exe stop SPF4
  • <SYSTEM32>\net.exe stop SPF4
  • <SYSTEM32>\sc.exe config SbPF.Launcher start= disabled
  • <SYSTEM32>\net1.exe stop SbPF.Launcher
  • <SYSTEM32>\sc.exe delete SbPF.Launcher
  • <SYSTEM32>\net1.exe stop acssrv
  • <SYSTEM32>\sc.exe delete acssrv
  • <SYSTEM32>\net.exe stop SAVService
  • <SYSTEM32>\sc.exe config acssrv start= disabled
  • <SYSTEM32>\sc.exe delete SPF4
  • <SYSTEM32>\net.exe stop acssrv
  • <SYSTEM32>\sc.exe stop acssrv
  • <SYSTEM32>\sc.exe config OutpostFirewall start= disabled
  • <SYSTEM32>\net1.exe stop K7TSMngr
  • <SYSTEM32>\sc.exe delete K7TSMngr
  • <SYSTEM32>\net.exe stop "avast! Antivirus"
  • <SYSTEM32>\sc.exe config K7TSMngr start= disabled
  • <SYSTEM32>\sc.exe delete K7RTScan
  • <SYSTEM32>\net.exe stop K7TSMngr
  • <SYSTEM32>\sc.exe stop K7TSMngr
  • <SYSTEM32>\net.exe stop AntiVirService
  • <SYSTEM32>\sc.exe stop AntiVirService
  • <SYSTEM32>\sc.exe config AntiVirService start= disabled
  • <SYSTEM32>\sc.exe delete "avast! Antivirus"
  • <SYSTEM32>\sc.exe stop "avast! Antivirus"
  • <SYSTEM32>\sc.exe config "avast! Antivirus" start= disabled
  • <SYSTEM32>\net1.exe stop "avast! Antivirus"
  • <SYSTEM32>\sc.exe delete CSIScanner
  • <SYSTEM32>\net.exe stop MsMpSvc
  • <SYSTEM32>\sc.exe stop MsMpSvc
  • <SYSTEM32>\net1.exe stop CSIScanner
  • <SYSTEM32>\net.exe stop CSIScanner
  • <SYSTEM32>\sc.exe stop CSIScanner
  • <SYSTEM32>\sc.exe config CSIScanner start= disabled
  • <SYSTEM32>\sc.exe stop K7RTScan
  • <SYSTEM32>\sc.exe config K7RTScan start= disabled
  • <SYSTEM32>\net1.exe stop K7RTScan
  • <SYSTEM32>\net.exe stop K7RTScan
  • <SYSTEM32>\sc.exe config MsMpSvc start= disabled
  • <SYSTEM32>\net1.exe stop MsMpSvc
  • <SYSTEM32>\sc.exe delete MsMpSvc
  • <SYSTEM32>\net1.exe stop AntiVirService
  • <SYSTEM32>\sc.exe config avg9wd start= disabled
  • <SYSTEM32>\net1.exe stop avg9wd
  • <SYSTEM32>\sc.exe delete avg9wd
  • <SYSTEM32>\sc.exe stop avg9wd
  • <SYSTEM32>\net1.exe stop avg8wd
  • <SYSTEM32>\sc.exe delete avg8wd
  • <SYSTEM32>\net.exe stop avg9wd
  • <SYSTEM32>\sc.exe delete McShield
  • <SYSTEM32>\net.exe stop OutpostFirewall
  • <SYSTEM32>\sc.exe stop OutpostFirewall
  • <SYSTEM32>\net1.exe stop McShield
  • <SYSTEM32>\net.exe stop McShield
  • <SYSTEM32>\sc.exe stop McShield
  • <SYSTEM32>\sc.exe config McShield start= disabled
  • <SYSTEM32>\net1.exe stop PASRV
  • <SYSTEM32>\sc.exe delete PASRV
  • <SYSTEM32>\net.exe stop VSSERV
  • <SYSTEM32>\sc.exe config PASRV start= disabled
  • <SYSTEM32>\sc.exe delete AntiVirService
  • <SYSTEM32>\sc.exe stop PASRV
  • <SYSTEM32>\net.exe stop PASRV
  • <SYSTEM32>\net.exe stop avg8wd
  • <SYSTEM32>\sc.exe stop avg8wd
  • <SYSTEM32>\sc.exe config avg8wd start= disabled
  • <SYSTEM32>\sc.exe delete VSSERV
  • <SYSTEM32>\sc.exe stop VSSERV
  • <SYSTEM32>\sc.exe config VSSERV start= disabled
  • <SYSTEM32>\net1.exe stop VSSERV
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Terminates or attempts to terminate
the following user processes:
  • zlclient.exe
  • GUARD.EXE
Searches for windows to
detect analytical utilities:
  • ClassName: 'PROCMON_WINDOW_CLASS' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
detect programs and games:
  • ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'
Hides the following processes:
  • <Full path to virus>
  • <SYSTEM32>\MsRxClient.exe
Modifies file system :
Creates the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\debug2[1].zip
  • <SYSTEM32>\MsRxClient.exe
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\MsRxClient.exe
Deletes itself.
Network activity:
Connects to:
  • 'ro##.##xme1fucan.com':80
TCP:
HTTP GET requests:
  • ro##.##xme1fucan.com/net/debug2.zip
UDP:
  • DNS ASK ns###.#exscandalism.com
  • DNS ASK ns###.#llsexytrickz.com
  • DNS ASK ns##.##xysextips.net
  • DNS ASK ns##.##sanesextrix.net
  • DNS ASK ns###.#shongkong.net
  • DNS ASK ns###.##nyouhavanorgasm.su
  • DNS ASK ns###.##rmanexchangsvc.net
  • DNS ASK ns###.##lkerstbandits.com
  • DNS ASK ns###.###isandthortoninc.com
  • DNS ASK ns##.###biemaniacbiz.com
  • DNS ASK ns##.##ezombieblog.net
  • DNS ASK ns#.###lzombieguide.com
  • DNS ASK ro##.##xme1fucan.com
  • DNS ASK ns##.##ezombieworld.com
  • DNS ASK ns##.##tosalemania.net
  • DNS ASK ns##.##toultrasale.net
  • DNS ASK ns##.##toresalerep.net
  • DNS ASK ns##.##toreport4you.net
Miscellaneous:
Searches for the following windows:
  • ClassName: 'PROCEXPL' WindowName: ''
  • ClassName: '#32770' WindowName: 'Regshot 1.8.2'
  • ClassName: 'TCPViewClass' WindowName: ''
  • ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
  • ClassName: 'SmartSniff' WindowName: 'SmartSniff'

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.
Download Dr.Web

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