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Win32.HLLW.Oscar.23
Added to the Dr.Web virus database:
2014-07-14
Virus description added:
2014-07-15
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Terminal Server\Install\Software\Microsoft\Windows\CurrentVersion\Run] 'NVIDIA driver monitor' = '%WINDIR%\nvsvc32.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'NVIDIA driver monitor' = '%WINDIR%\nvsvc32.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'NVIDIA driver monitor' = '%WINDIR%\nvsvc32.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '%WINDIR%\nvsvc32.exe:*:Enabled:NVIDIA driver monitor'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:NVIDIA driver monitor'
Creates and executes the following:
Executes the following:
'<SYSTEM32>\net1.exe' stop wuauserv
'<SYSTEM32>\sc.exe' config wuauserv start= disabled
'<SYSTEM32>\net1.exe' stop MsMpSvc
'<SYSTEM32>\sc.exe' config MsMpSvc start= disabled
'<SYSTEM32>\net.exe' stop MsMpSvc
'<SYSTEM32>\netsh.exe' firewall add allowedprogram 1.exe 1 ENABLE
'<SYSTEM32>\net1.exe'
'<SYSTEM32>\net.exe' stop wuauserv
'%WINDIR%\explorer.exe' http://br#####sers.myspace.com/Browse/Browse.aspx
Modifies file system :
Creates the following files:
Sets the 'hidden' attribute to the following files:
%WINDIR%\nvsvc32.exe
<Full path to virus>
Network activity:
Connects to:
UDP:
DNS ASK jo######faccountancy.com
DNS ASK ft#.##oenix-cc.net
DNS ASK tr####ationale.org
DNS ASK st###ntime.info
DNS ASK ma#.#730ip.com
DNS ASK ap#.####rtoshistory.info
DNS ASK as###.ic.ac.uk
DNS ASK al#.##kibili.com
DNS ASK ve###tek.com
DNS ASK br#####sers.myspace.com
Miscellaneous:
Searches for the following windows:
ClassName: 'ComboBoxEx32' WindowName: '(null)'
ClassName: 'ComboBox' WindowName: '(null)'
ClassName: 'Address Band Root' WindowName: '(null)'
ClassName: 'msctls_statusbar32' WindowName: '(null)'
ClassName: 'MS_AutodialMonitor' WindowName: '(null)'
ClassName: 'MS_WebcheckMonitor' WindowName: '(null)'
ClassName: '' WindowName: '(null)'
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
ClassName: 'ReBarWindow32' WindowName: '(null)'
ClassName: 'IEFrame' WindowName: '(null)'
ClassName: 'Frame Tab' WindowName: '(null)'
ClassName: 'Indicator' WindowName: '(null)'
ClassName: 'HTMLSOURCEVIEW' WindowName: '(null)'
ClassName: 'Internet Explorer_Server' WindowName: '(null)'
ClassName: 'WorkerW' WindowName: '(null)'
ClassName: 'TabWindowClass' WindowName: '(null)'
ClassName: 'Shell DocObject View' WindowName: '(null)'
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