Win32.HLLW.Autoruner2.8385

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'

Creates the following files on removable media:

<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\tmpdata\tmpdata.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' /C sc stop TmPfw
'<SYSTEM32>\msvcrt.exe' <Full path to virus>

Executes the following:

'<SYSTEM32>\sc.exe' config vsmon start= disabled
'<SYSTEM32>\sc.exe' stop vsmon
'<SYSTEM32>\sc.exe' delete vsmon
'<SYSTEM32>\net1.exe' stop vsmon
'<SYSTEM32>\sc.exe' config cmdAgent start= disabled
'<SYSTEM32>\sc.exe' stop cmdAgent
'<SYSTEM32>\sc.exe' delete cmdAgent
'<SYSTEM32>\net1.exe' /pid=3848
'<SYSTEM32>\net.exe' stop SPF4
'<SYSTEM32>\sc.exe' delete SbPF.Launcher
'<SYSTEM32>\net1.exe' /C sc stop acssrv
'<SYSTEM32>\sc.exe' stop SPF4
'<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' /C sc stop SmcService
'<SYSTEM32>\sc.exe' /C net stop SmcService
'<SYSTEM32>\sc.exe' /C sc config SmcService start= disabled
'<SYSTEM32>\sc.exe' delete KPF4
'<SYSTEM32>\net.exe' stop KPF4
'<SYSTEM32>\sc.exe' delete TmPfw
'<SYSTEM32>\ipconfig.exe' config KPF4 start= disabled
'<SYSTEM32>\sc.exe' stop KPF4
'<SYSTEM32>\sc.exe' /pid=2472
'<SYSTEM32>\net1.exe' stop SmcService
'<SYSTEM32>\sc.exe' /pid=2712
'<SYSTEM32>\net.exe' stop cmdAgent
'<SYSTEM32>\sc.exe' /C sc delete SmcService
'<SYSTEM32>\net1.exe' /pid=3768
'<SYSTEM32>\sc.exe' delete SmcService
'<SYSTEM32>\sc.exe' stop SmcService
'<SYSTEM32>\net1.exe' stop "Sophos AutoUpdate Service"
'<SYSTEM32>\sc.exe' delete "Sophos AutoUpdate Service"
'<SYSTEM32>\sc.exe' stop "Sophos Client Firewall"
'<SYSTEM32>\net.exe' stop "Sophos Client Firewall"
'<SYSTEM32>\sc.exe' stop "Sophos AutoUpdate Service"
'<SYSTEM32>\net1.exe' stop SAVAdminService
'<SYSTEM32>\sc.exe' config "Sophos AutoUpdate Service" start= disabled
'<SYSTEM32>\net.exe' stop "Sophos AutoUpdate Service"
'<SYSTEM32>\sc.exe' config "Sophos Client Firewall Manager" start= disabled
'<SYSTEM32>\sc.exe' stop "Sophos Client Firewall Manager"
'<SYSTEM32>\net1.exe' stop "Sophos Client Firewall Manager"
'<SYSTEM32>\sc.exe' delete "Sophos Client Firewall Manager"
'<SYSTEM32>\net1.exe' stop "Sophos Client Firewall"
'<SYSTEM32>\sc.exe' config "Sophos Client Firewall" start= disabled
'<SYSTEM32>\net.exe' stop "Sophos Client Firewall Manager"
'<SYSTEM32>\sc.exe' delete "Sophos Client Firewall"
'<SYSTEM32>\net1.exe' /C net stop SAVService
'<SYSTEM32>\sc.exe' config acssrv start= disabled
'<SYSTEM32>\net.exe' stop SAVService
'<SYSTEM32>\sc.exe' delete acssrv
'<SYSTEM32>\sc.exe' /pid=3092
'<SYSTEM32>\sc.exe' delete SPF4
'<SYSTEM32>\net1.exe' stop acssrv
'<SYSTEM32>\sc.exe' /pid=2952
'<SYSTEM32>\sc.exe' stop SAVAdminService
'<SYSTEM32>\net.exe' stop SAVAdminService
'<SYSTEM32>\sc.exe' delete SAVAdminService
'<SYSTEM32>\sc.exe' config SAVAdminService start= disabled
'<SYSTEM32>\sc.exe' config SavService start= disabled
'<SYSTEM32>\sc.exe' stop SAVService
'<SYSTEM32>\sc.exe' delete SAVService
'<SYSTEM32>\net1.exe' stop SAVService
'<SYSTEM32>\net.exe' stop PASRV
'<SYSTEM32>\net1.exe' stop AntiVirService
'<SYSTEM32>\sc.exe' config PASRV start= disabled
'<SYSTEM32>\sc.exe' stop PASRV
'<SYSTEM32>\sc.exe' stop AntiVirService
'<SYSTEM32>\net.exe' stop AntiVirService
'<SYSTEM32>\sc.exe' delete AntiVirService
'<SYSTEM32>\sc.exe' config AntiVirService start= disabled
'<SYSTEM32>\sc.exe' delete VSSERV
'<SYSTEM32>\sc.exe' config VSSERV start= disabled
'<SYSTEM32>\net.exe' stop avg8wd
'<SYSTEM32>\net1.exe' stop VSSERV
'<SYSTEM32>\sc.exe' delete PASRV
'<SYSTEM32>\net1.exe' stop PASRV
'<SYSTEM32>\sc.exe' stop VSSERV
'<SYSTEM32>\net.exe' stop VSSERV
'<SYSTEM32>\sc.exe' delete K7RTScan
'<SYSTEM32>\net1.exe' stop K7RTScan
'<SYSTEM32>\sc.exe' stop K7TSMngr
'<SYSTEM32>\net.exe' stop K7TSMngr
'<SYSTEM32>\net.exe' stop K7RTScan
'<SYSTEM32>\ipconfig.exe' /flushdns
'<SYSTEM32>\sc.exe' config K7RTScan start= disabled
'<SYSTEM32>\sc.exe' stop K7RTScan
'<SYSTEM32>\sc.exe' config "avast! Antivirus" start= disabled
'<SYSTEM32>\sc.exe' stop "avast! Antivirus"
'<SYSTEM32>\net1.exe' stop "avast! Antivirus"
'<SYSTEM32>\sc.exe' delete "avast! Antivirus"
'<SYSTEM32>\sc.exe' delete K7TSMngr
'<SYSTEM32>\sc.exe' config K7TSMngr start= disabled
'<SYSTEM32>\net.exe' stop "avast! Antivirus"
'<SYSTEM32>\net1.exe' stop K7TSMngr
'<SYSTEM32>\sc.exe' config McShield start= disabled
'<SYSTEM32>\sc.exe' stop McShield
'<SYSTEM32>\sc.exe' delete McShield
'<SYSTEM32>\net1.exe' stop McShield
'<SYSTEM32>\sc.exe' delete ekrn
'<SYSTEM32>\sc.exe' config ekrn start= disabled
'<SYSTEM32>\net.exe' stop McShield
'<SYSTEM32>\net1.exe' stop ekrn
'<SYSTEM32>\sc.exe' stop TmPfw
'<SYSTEM32>\net.exe' stop TmPfw
'<SYSTEM32>\ipconfig.exe' stop TmPfw
'<SYSTEM32>\sc.exe' config TmPfw start= disabled
'<SYSTEM32>\sc.exe' stop OutpostFirewall
'<SYSTEM32>\net.exe' stop OutpostFirewall
'<SYSTEM32>\sc.exe' delete OutpostFirewall
'<SYSTEM32>\sc.exe' config OutpostFirewall start= disabled
'<SYSTEM32>\sc.exe' stop avg9wd
'<SYSTEM32>\net.exe' stop avg9wd
'<SYSTEM32>\net1.exe' stop avg9wd
'<SYSTEM32>\sc.exe' config avg9wd start= disabled
'<SYSTEM32>\sc.exe' config avg8wd start= disabled
'<SYSTEM32>\sc.exe' stop avg8wd
'<SYSTEM32>\net1.exe' stop avg8wd
'<SYSTEM32>\sc.exe' delete avg8wd
'<SYSTEM32>\sc.exe' delete NOD32krn
'<SYSTEM32>\net1.exe' stop NOD32krn
'<SYSTEM32>\sc.exe' stop ekrn
'<SYSTEM32>\net.exe' stop ekrn
'<SYSTEM32>\net.exe' stop NOD32krn
'<SYSTEM32>\sc.exe' delete avg9wd
'<SYSTEM32>\sc.exe' config NOD32krn start= disabled
'<SYSTEM32>\sc.exe' stop NOD32krn

Injects code into

the following system processes:

<SYSTEM32>\net1.exe
<SYSTEM32>\net.exe
<SYSTEM32>\cmd.exe
<SYSTEM32>\ipconfig.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 programs and games:

ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'

Hides the following processes:

<SYSTEM32>\msvcrt.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\file[1]
<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##.##inmeround.info':7302
'sr##.#orpdev.info':6501
'sr##.##nage-your-box.ru':41350
'ri#.###senger-update.su':80
'sr##.###senger-update.ru':9899
'bs#.###senger-update.su':80

TCP:

HTTP GET requests:

bs#.###senger-update.su/file
ri#.###senger-update.su/rix

UDP:

DNS ASK sr##.##inmeround.info
DNS ASK sr##.#orpdev.info
DNS ASK sr##.##nage-your-box.ru
DNS ASK ri#.###senger-update.su
DNS ASK sr##.###senger-update.ru
DNS ASK bs#.###senger-update.su

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'

TECHNOLOGIES

TERMINOLOGIE

COURS ET EDU

MYTHES

Technical Information