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' = 'msvcrt.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>\msvcrt.exe' = '<SYSTEM32>\msvcrt.exe:*:Enabled:DHCP Router'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\msvcrt.exe' = '<SYSTEM32>\msvcrt.exe:*:Enabled:DHCP Router'
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
blocks the following features:
- System Restore (SR)
- Windows Security Center
Creates and executes the following:
- '<SYSTEM32>\msvcrt.exe' /pid=2444
- '<SYSTEM32>\msvcrt.exe' delete TmPfw
- '<SYSTEM32>\msvcrt.exe' <Full path to virus>
Executes the following:
- '<SYSTEM32>\sc.exe' delete acssrv
- '<SYSTEM32>\sc.exe' /C sc config SavService start= disabled
- '<SYSTEM32>\sc.exe' stop SAVService
- '<SYSTEM32>\sc.exe' stop acssrv
- '<SYSTEM32>\net1.exe' /C net stop SAVService
- '<SYSTEM32>\net1.exe' delete SPF4
- '<SYSTEM32>\net1.exe' stop SPF4
- '<SYSTEM32>\sc.exe' config acssrv start= disabled
- '<SYSTEM32>\sc.exe' /pid=760
- '<SYSTEM32>\net1.exe' /pid=3688
- '<SYSTEM32>\net1.exe' /C sc delete SAVAdminService
- '<SYSTEM32>\net.exe' stop SAVAdminService
- '<SYSTEM32>\sc.exe' stop SAVAdminService
- '<SYSTEM32>\ipconfig.exe' /pid=3760
- '<SYSTEM32>\ipconfig.exe' /pid=3752
- '<SYSTEM32>\sc.exe' /C sc config SAVAdminService start= disabled
- '<SYSTEM32>\sc.exe' /pid=3696
- '<SYSTEM32>\net1.exe' stop SAVService
- '<SYSTEM32>\sc.exe' delete SAVService
- '<SYSTEM32>\net1.exe' /C sc stop acssrv
- '<SYSTEM32>\net1.exe' stop vsmon
- '<SYSTEM32>\net.exe' /C sc stop SbPF.Launcher
- '<SYSTEM32>\sc.exe' /pid=180
- '<SYSTEM32>\sc.exe' /C sc config SbPF.Launcher start= disabled
- '<SYSTEM32>\net1.exe' /C net stop SbPF.Launcher
- '<SYSTEM32>\sc.exe' /C sc stop vsmon
- '<SYSTEM32>\sc.exe' /C net stop vsmon
- '<SYSTEM32>\sc.exe' stop vsmon
- '<SYSTEM32>\sc.exe' delete cmdAgent
- '<SYSTEM32>\sc.exe' delete vsmon
- '<SYSTEM32>\net.exe' stop SPF4
- '<SYSTEM32>\net1.exe' /C sc delete SPF4
- '<SYSTEM32>\sc.exe' /pid=3624
- '<SYSTEM32>\sc.exe' stop SPF4
- '<SYSTEM32>\sc.exe' delete SbPF.Launcher
- '<SYSTEM32>\sc.exe' stop SbPF.Launcher
- '<SYSTEM32>\net.exe' stop SbPF.Launcher
- '<SYSTEM32>\net1.exe' stop SbPF.Launcher
- '<SYSTEM32>\sc.exe' config SbPF.Launcher start= disabled
- '<SYSTEM32>\sc.exe' /pid=800
- '<SYSTEM32>\net1.exe' /pid=3592
- '<SYSTEM32>\net1.exe' /pid=2764
- '<SYSTEM32>\net1.exe' /pid=264
- '<SYSTEM32>\sc.exe' /pid=3524
- '<SYSTEM32>\sc.exe' /pid=3012
- '<SYSTEM32>\sc.exe' /pid=3988
- '<SYSTEM32>\sc.exe' /pid=3520
- '<SYSTEM32>\sc.exe' /pid=4044
- '<SYSTEM32>\sc.exe' /pid=3036
- '<SYSTEM32>\ipconfig.exe' /pid=3480
- '<SYSTEM32>\net1.exe' /pid=2912
- '<SYSTEM32>\sc.exe' /pid=2512
- '<SYSTEM32>\net1.exe' /pid=3224
- '<SYSTEM32>\sc.exe' /pid=1424
- '<SYSTEM32>\net1.exe' /pid=3832
- '<SYSTEM32>\ipconfig.exe' /pid=3108
- '<SYSTEM32>\sc.exe' /pid=3944
- '<SYSTEM32>\sc.exe' /pid=364
- '<SYSTEM32>\net1.exe' delete "Sophos Client Firewall Manager"
- '<SYSTEM32>\sc.exe' stop "Sophos AutoUpdate Service"
- '<SYSTEM32>\sc.exe' /C sc delete "Sophos AutoUpdate Service"
- '<SYSTEM32>\net1.exe' config "Sophos AutoUpdate Service" start= disabled
- '<SYSTEM32>\sc.exe' /pid=2852
- '<SYSTEM32>\sc.exe' /pid=3792
- '<SYSTEM32>\sc.exe' /pid=2868
- '<SYSTEM32>\net1.exe' config SAVAdminService start= disabled
- '<SYSTEM32>\sc.exe' /C sc stop "Sophos AutoUpdate Service"
- '<SYSTEM32>\sc.exe' /C net stop "Sophos AutoUpdate Service"
- '<SYSTEM32>\sc.exe' /C net stop "Sophos Client Firewall"
- '<SYSTEM32>\sc.exe' stop "Sophos Client Firewall Manager"
- '<SYSTEM32>\net.exe' stop "Sophos Client Firewall Manager"
- '<SYSTEM32>\net1.exe' stop "Sophos Client Firewall Manager"
- '<SYSTEM32>\sc.exe' config "Sophos Client Firewall Manager" start= disabled
- '<SYSTEM32>\net1.exe' /C sc stop "Sophos Client Firewall Manager"
- '<SYSTEM32>\sc.exe' stop "Sophos Client Firewall"
- '<SYSTEM32>\sc.exe' /pid=3852
- '<SYSTEM32>\sc.exe' /C net stop "Sophos Client Firewall Manager"
- '<SYSTEM32>\sc.exe' config "Sophos Client Firewall" start= disabled
- '<SYSTEM32>\net1.exe' /pid=3872
- '<SYSTEM32>\net.exe' stop VSSERV
- '<SYSTEM32>\net1.exe' stop PASRV
- '<SYSTEM32>\sc.exe' config VSSERV start= disabled
- '<SYSTEM32>\sc.exe' stop VSSERV
- '<SYSTEM32>\sc.exe' delete PASRV
- '<SYSTEM32>\net1.exe' stop AntiVirService
- '<SYSTEM32>\net.exe' stop PASRV
- '<SYSTEM32>\sc.exe' config PASRV start= disabled
- '<SYSTEM32>\sc.exe' stop PASRV
- '<SYSTEM32>\sc.exe' delete VSSERV
- '<SYSTEM32>\net.exe' stop avg9wd
- '<SYSTEM32>\net1.exe' stop avg8wd
- '<SYSTEM32>\sc.exe' config avg9wd start= disabled
- '<SYSTEM32>\sc.exe' stop avg9wd
- '<SYSTEM32>\sc.exe' delete avg8wd
- '<SYSTEM32>\net1.exe' stop VSSERV
- '<SYSTEM32>\net.exe' stop avg8wd
- '<SYSTEM32>\sc.exe' config avg8wd start= disabled
- '<SYSTEM32>\sc.exe' stop avg8wd
- '<SYSTEM32>\sc.exe' delete AntiVirService
- '<SYSTEM32>\net.exe' stop K7TSMngr
- '<SYSTEM32>\sc.exe' delete K7RTScan
- '<SYSTEM32>\sc.exe' stop K7TSMngr
- '<SYSTEM32>\sc.exe' config K7TSMngr start= disabled
- '<SYSTEM32>\net1.exe' stop K7RTScan
- '<SYSTEM32>\net.exe' stop K7RTScan
- '<SYSTEM32>\ipconfig.exe' /flushdns
- '<SYSTEM32>\sc.exe' config K7RTScan start= disabled
- '<SYSTEM32>\sc.exe' stop K7RTScan
- '<SYSTEM32>\sc.exe' delete K7TSMngr
- '<SYSTEM32>\net.exe' stop AntiVirService
- '<SYSTEM32>\net1.exe' stop "avast! Antivirus"
- '<SYSTEM32>\sc.exe' config AntiVirService start= disabled
- '<SYSTEM32>\sc.exe' stop AntiVirService
- '<SYSTEM32>\sc.exe' delete "avast! Antivirus"
- '<SYSTEM32>\net.exe' stop "avast! Antivirus"
- '<SYSTEM32>\net1.exe' stop K7TSMngr
- '<SYSTEM32>\sc.exe' config "avast! Antivirus" start= disabled
- '<SYSTEM32>\sc.exe' stop "avast! Antivirus"
- '<SYSTEM32>\net.exe' stop KPF4
- '<SYSTEM32>\net1.exe' stop TmPfw
- '<SYSTEM32>\sc.exe' config KPF4 start= disabled
- '<SYSTEM32>\sc.exe' stop KPF4
- '<SYSTEM32>\sc.exe' config TmPfw start= disabled
- '<SYSTEM32>\net1.exe' stop OutpostFirewall
- '<SYSTEM32>\sc.exe' delete OutpostFirewall
- '<SYSTEM32>\sc.exe' stop TmPfw
- '<SYSTEM32>\net.exe' stop TmPfw
- '<SYSTEM32>\sc.exe' delete KPF4
- '<SYSTEM32>\net.exe' stop cmdAgent
- '<SYSTEM32>\ipconfig.exe' delete SmcService
- '<SYSTEM32>\sc.exe' config cmdAgent start= disabled
- '<SYSTEM32>\sc.exe' stop cmdAgent
- '<SYSTEM32>\net1.exe' stop SmcService
- '<SYSTEM32>\net.exe' stop SmcService
- '<SYSTEM32>\net1.exe' stop KPF4
- '<SYSTEM32>\sc.exe' config SmcService start= disabled
- '<SYSTEM32>\sc.exe' stop SmcService
- '<SYSTEM32>\sc.exe' config OutpostFirewall start= disabled
- '<SYSTEM32>\net1.exe' stop NOD32krn
- '<SYSTEM32>\sc.exe' delete NOD32krn
- '<SYSTEM32>\sc.exe' stop ekrn
- '<SYSTEM32>\net.exe' stop ekrn
- '<SYSTEM32>\sc.exe' config NOD32krn start= disabled
- '<SYSTEM32>\net1.exe' stop avg9wd
- '<SYSTEM32>\sc.exe' delete avg9wd
- '<SYSTEM32>\sc.exe' stop NOD32krn
- '<SYSTEM32>\net.exe' stop NOD32krn
- '<SYSTEM32>\sc.exe' config ekrn start= disabled
- '<SYSTEM32>\net1.exe' stop McShield
- '<SYSTEM32>\sc.exe' delete McShield
- '<SYSTEM32>\sc.exe' stop OutpostFirewall
- '<SYSTEM32>\net.exe' stop OutpostFirewall
- '<SYSTEM32>\sc.exe' config McShield start= disabled
- '<SYSTEM32>\net1.exe' stop ekrn
- '<SYSTEM32>\sc.exe' delete ekrn
- '<SYSTEM32>\sc.exe' stop McShield
- '<SYSTEM32>\net.exe' stop McShield
Injects code into
the following system processes:
- <SYSTEM32>\net.exe
- <SYSTEM32>\cmd.exe
- <SYSTEM32>\sc.exe
- <SYSTEM32>\net1.exe
Terminates or attempts to terminate
the following user processes:
- ntvdm.exe
- GUARD.EXE
Searches for windows to
detect programs and games:
- ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'
Hides the following processes:
- <SYSTEM32>\msvcrt.exe
Modifies file system :
Creates the following files:
- <SYSTEM32>\msvcrt.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\rix[1]
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\msvcrt.exe
Modifies the HOSTS file.
Deletes itself.
Network activity:
Connects to:
- 'sr##.#eefxport.info':22048
- 'ri#.###senger-update.su':80
TCP:
HTTP GET requests:
- ri#.###senger-update.su/rix
UDP:
- DNS ASK sr##.#radeasia.info
- DNS ASK sr##.###senger-update.ru
- DNS ASK bs#.###senger-update.su
- DNS ASK ri#.###senger-update.su
- DNS ASK sr##.#eefxport.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'PROCEXPL' WindowName: '(null)'
- ClassName: 'WindowsForms10.Window.8.app.0.33c0d9d' WindowName: '(null)'
- ClassName: 'TApplication' WindowName: 'HostsXpert'
- ClassName: 'ThunderRT6Main' WindowName: 'HijackThis'
- ClassName: 'TCPViewClass' WindowName: '(null)'
- ClassName: 'ThunderRT6Main' WindowName: 'Malwarebytes'
- ClassName: 'TWizardForm' WindowName: 'Setup - Malwarebytes'
- ClassName: 'TApplication' WindowName: 'OTL'
- ClassName: 'TApplication' WindowName: 'AVZ Antiviral Toolkit'
