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' = 'MsDwClient.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = 'ctfmon.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\MsDwClient.exe' = '<SYSTEM32>\MsDwClient.exe:*:Enabled:LAN Router'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\MsDwClient.exe' = '<SYSTEM32>\MsDwClient.exe:*:Enabled:LAN Router'
Creates and executes the following:
- '<SYSTEM32>\MsDwClient.exe' /pid=3812
- '<SYSTEM32>\MsDwClient.exe' <Full path to virus>
Executes the following:
- '<SYSTEM32>\net.exe' stop KPF4
- '<SYSTEM32>\sc.exe' stop KPF4
- '<SYSTEM32>\sc.exe' delete KPF4
- '<SYSTEM32>\net1.exe' stop TmPfw
- '<SYSTEM32>\net.exe' stop TmPfw
- '<SYSTEM32>\sc.exe' config TmPfw start= disabled
- '<SYSTEM32>\sc.exe' stop TmPfw
- '<SYSTEM32>\sc.exe' stop SmcService
- '<SYSTEM32>\net1.exe' config SmcService start= disabled
- '<SYSTEM32>\sc.exe' /C sc stop cmdAgent
- '<SYSTEM32>\net1.exe' stop KPF4
- '<SYSTEM32>\sc.exe' config KPF4 start= disabled
- '<SYSTEM32>\sc.exe' /C sc config SmcService start= disabled
- '<SYSTEM32>\net1.exe' /pid=3448
- '<SYSTEM32>\net.exe' stop McShield
- '<SYSTEM32>\sc.exe' stop McShield
- '<SYSTEM32>\sc.exe' config McShield start= disabled
- '<SYSTEM32>\sc.exe' delete ekrn
- '<SYSTEM32>\sc.exe' stop ekrn
- '<SYSTEM32>\sc.exe' config ekrn start= disabled
- '<SYSTEM32>\net1.exe' stop ekrn
- '<SYSTEM32>\sc.exe' config OutpostFirewall start= disabled
- '<SYSTEM32>\net1.exe' stop OutpostFirewall
- '<SYSTEM32>\sc.exe' delete OutpostFirewall
- '<SYSTEM32>\sc.exe' stop OutpostFirewall
- '<SYSTEM32>\net1.exe' stop McShield
- '<SYSTEM32>\sc.exe' delete McShield
- '<SYSTEM32>\net.exe' stop OutpostFirewall
- '<SYSTEM32>\sc.exe' config SbPF.Launcher start= disabled
- '<SYSTEM32>\sc.exe' /pid=3544
- '<SYSTEM32>\net.exe' /C net stop SPF4
- '<SYSTEM32>\net.exe' stop SbPF.Launcher
- '<SYSTEM32>\net1.exe' stop vsmon
- '<SYSTEM32>\sc.exe' /C sc delete SbPF.Launcher
- '<SYSTEM32>\sc.exe' stop SbPF.Launcher
- '<SYSTEM32>\sc.exe' stop SPF4
- '<SYSTEM32>\sc.exe' /pid=1364
- '<SYSTEM32>\sc.exe' /pid=3652
- '<SYSTEM32>\net.exe' stop SPF4
- '<SYSTEM32>\sc.exe' delete SbPF.Launcher
- '<SYSTEM32>\net1.exe' /C sc stop SPF4
- '<SYSTEM32>\sc.exe' /C sc config SPF4 start= disabled
- '<SYSTEM32>\net.exe' stop cmdAgent
- '<SYSTEM32>\sc.exe' delete cmdAgent
- '<SYSTEM32>\net1.exe' stop cmdAgent
- '<SYSTEM32>\sc.exe' config cmdAgent start= disabled
- '<SYSTEM32>\net1.exe' stop SmcService
- '<SYSTEM32>\sc.exe' /C sc delete cmdAgent
- '<SYSTEM32>\sc.exe' /C sc stop vsmon
- '<SYSTEM32>\sc.exe' config vsmon start= disabled
- '<SYSTEM32>\sc.exe' /C sc config SbPF.Launcher start= disabled
- '<SYSTEM32>\net1.exe' /pid=412
- '<SYSTEM32>\sc.exe' delete vsmon
- '<SYSTEM32>\net1.exe' /pid=4048
- '<SYSTEM32>\sc.exe' stop vsmon
- '<SYSTEM32>\net.exe' stop vsmon
- '<SYSTEM32>\sc.exe' delete K7TSMngr
- '<SYSTEM32>\net1.exe' stop K7TSMngr
- '<SYSTEM32>\net.exe' stop "avast! Antivirus"
- '<SYSTEM32>\sc.exe' config K7TSMngr start= disabled
- '<SYSTEM32>\net1.exe' stop K7RTScan
- '<SYSTEM32>\sc.exe' stop K7TSMngr
- '<SYSTEM32>\net.exe' stop K7TSMngr
- '<SYSTEM32>\net.exe' stop AntiVirService
- '<SYSTEM32>\sc.exe' stop AntiVirService
- '<SYSTEM32>\sc.exe' config AntiVirService start= disabled
- '<SYSTEM32>\net1.exe' stop "avast! Antivirus"
- '<SYSTEM32>\sc.exe' stop "avast! Antivirus"
- '<SYSTEM32>\sc.exe' config "avast! Antivirus" start= disabled
- '<SYSTEM32>\sc.exe' delete "avast! Antivirus"
- '<SYSTEM32>\net1.exe' stop CSIScanner
- '<SYSTEM32>\net.exe' stop MsMpSvc
- '<SYSTEM32>\sc.exe' stop MsMpSvc
- '<SYSTEM32>\sc.exe' delete 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>\sc.exe' delete K7RTScan
- '<SYSTEM32>\net.exe' stop K7RTScan
- '<SYSTEM32>\sc.exe' config MsMpSvc start= disabled
- '<SYSTEM32>\sc.exe' delete MsMpSvc
- '<SYSTEM32>\net1.exe' stop MsMpSvc
- '<SYSTEM32>\sc.exe' stop avg9wd
- '<SYSTEM32>\sc.exe' config avg9wd start= disabled
- '<SYSTEM32>\net1.exe' stop avg9wd
- '<SYSTEM32>\net.exe' stop avg9wd
- '<SYSTEM32>\sc.exe' config avg8wd start= disabled
- '<SYSTEM32>\sc.exe' delete avg8wd
- '<SYSTEM32>\net1.exe' stop avg8wd
- '<SYSTEM32>\sc.exe' delete NOD32krn
- '<SYSTEM32>\net1.exe' stop NOD32krn
- '<SYSTEM32>\net.exe' stop ekrn
- '<SYSTEM32>\net.exe' stop NOD32krn
- '<SYSTEM32>\sc.exe' delete avg9wd
- '<SYSTEM32>\sc.exe' stop NOD32krn
- '<SYSTEM32>\sc.exe' config NOD32krn start= disabled
- '<SYSTEM32>\sc.exe' config PASRV start= disabled
- '<SYSTEM32>\sc.exe' delete PASRV
- '<SYSTEM32>\net1.exe' stop PASRV
- '<SYSTEM32>\net.exe' stop PASRV
- '<SYSTEM32>\sc.exe' delete AntiVirService
- '<SYSTEM32>\net1.exe' stop AntiVirService
- '<SYSTEM32>\sc.exe' stop PASRV
- '<SYSTEM32>\sc.exe' delete VSSERV
- '<SYSTEM32>\net.exe' stop avg8wd
- '<SYSTEM32>\sc.exe' stop avg8wd
- '<SYSTEM32>\net1.exe' stop VSSERV
- '<SYSTEM32>\net.exe' stop VSSERV
- '<SYSTEM32>\sc.exe' stop VSSERV
- '<SYSTEM32>\sc.exe' config VSSERV start= disabled
Injects code into
the following system processes:
- <SYSTEM32>\net.exe
- <SYSTEM32>\net1.exe
- <SYSTEM32>\cmd.exe
- %WINDIR%\Explorer.EXE
- <SYSTEM32>\sc.exe
the following user processes:
- GUARD.EXE
Terminates or attempts to terminate
the following user processes:
- ntvdm.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:
- <SYSTEM32>\MsDwClient.exe
- <SYSTEM32>\sc.exe
- <SYSTEM32>\cmd.exe
Modifies file system :
Creates the following files:
- <SYSTEM32>\MsDwClient.exe
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\MsDwClient.exe
Deletes itself.
Network activity:
UDP:
- DNS ASK ns##.##toresalerep.net
- DNS ASK ns##.##ezombieworld.com
- DNS ASK ns##.##tosalemania.net
- DNS ASK ns##.##toreport4you.net
- DNS ASK us#.##xme1fucan.com
- DNS ASK ns#.###lzombieguide.com
- DNS ASK ns##.##ezombieblog.net
- DNS ASK ns##.###biemaniacbiz.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'PROCEXPL' WindowName: '(null)'
- ClassName: '#32770' WindowName: 'Regshot 1.8.2'
- ClassName: 'TCPViewClass' WindowName: '(null)'
- ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
- ClassName: 'SmartSniff' WindowName: 'SmartSniff'
