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Win32.HLLW.Autoruner.55906
Added to the Dr.Web virus database:
2011-08-09
Virus description added:
2011-08-09
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\winlogon.exe"'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'MSWUpdate' = '"%APPDATA%\winlogon.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Microsoft® Windows® Operating System' = '%APPDATA%\Microsoft\Protect\Credentials\taskhostt.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe "%APPDATA%\winlogon.exe"'
Creates the following files on removable media:
<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\SYSTEM.EXE
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\winlogon.exe' = '%APPDATA%\winlogon.exe:*:Enabled:CityScape'
Creates and executes the following:
%APPDATA%\Microsoft\Protect\Credentials\wmpnetvk.exe
%APPDATA%\winlogon.exe
%APPDATA%\Microsoft\Protect\Credentials\taskhostt.exe
Executes the following:
<SYSTEM32>\netsh.exe firewall add allowedprogram "%APPDATA%\winlogon.exe" CityScape Enable
Modifies file system :
Creates the following files:
%APPDATA%\iewFJHtE
%APPDATA%\winlogon.exe
%APPDATA%\Microsoft\Protect\Credentials\wmpnetvk.gzp:ZONE.identifier
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\locate_my_ip[1]
%APPDATA%\Microsoft\Protect\Credentials\wmpnetvk.gzp
<Current directory>\wmpnetvk.exe:ZONE.identifier
%APPDATA%\Microsoft\Protect\Credentials\taskhostt.gzp
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\SYSTEM.EXE
<Drive name for removable media>:\Autorun.inf
%APPDATA%\winlogon.exe
%APPDATA%\Microsoft\Protect\Credentials\wmpnetvk.exe
%APPDATA%\Microsoft\Protect\Credentials\taskhostt.exe
Deletes the following files:
%APPDATA%\winlogon.exe
%APPDATA%\iewFJHtE
Network activity:
Connects to:
'xp####e12345.info':3177
'www.ma##ind.com':80
'localhost':1036
TCP:
HTTP GET requests:
www.ma##ind.com/app/locate_my_ip
UDP:
DNS ASK xp####e12345.info
DNS ASK www.ma##ind.com
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: ''
ClassName: '' WindowName: 'HB'
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