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Win32.HLLW.Autoruner2.16172
Added to the Dr.Web virus database:
2014-07-17
Virus description added:
2014-07-17
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '1b365dbfed7401aa292e71f8e48e870a' = '"%APPDATA%\winlogon.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '1b365dbfed7401aa292e71f8e48e870a' = '"%APPDATA%\winlogon.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\1b365dbfed7401aa292e71f8e48e870a.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:winlogon.exe'
Creates and executes the following:
'%APPDATA%\winlogon.exe'
'%TEMP%\Server.exe'
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%APPDATA%\winlogon.exe" "winlogon.exe" ENABLE
Modifies file system :
Creates the following files:
%APPDATA%\winlogon.exe
%TEMP%\HVMRuntm.dll
%TEMP%\Server.exe
Network activity:
Connects to:
'nj#####iller.zapto.org':5552
UDP:
DNS ASK nj#####iller.zapto.org
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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