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Win32.HLLW.Autoruner2.13827
Added to the Dr.Web virus database:
2014-05-04
Virus description added:
2014-05-05
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'd5a38e9b5f206c41f8851bf04a251d26' = '"%TEMP%\chrome.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'd5a38e9b5f206c41f8851bf04a251d26' = '"%TEMP%\chrome.exe" ..'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'chrome.exe' = '<LS_APPDATA>\3.exe'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\d5a38e9b5f206c41f8851bf04a251d26.exe
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\ay_r_8_K_i_9_t_6_.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\chrome.exe' = '%TEMP%\chrome.exe:*:Enabled:chrome.exe'
Creates and executes the following:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\chrome.exe" "chrome.exe" ENABLE
Modifies file system :
Creates the following files:
%TEMP%\chrome.exe
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
%WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
<LS_APPDATA>\3.exe
C:\ay_r_8_K_i_9_t_6_.exe
C:\autorun.inf
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\ay_r_8_K_i_9_t_6_.exe
C:\autorun.inf
C:\ay_r_8_K_i_9_t_6_.exe
Moves the following files:
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
'an####boy.no-ip.biz':1177
UDP:
DNS ASK an####boy.no-ip.biz
Miscellaneous:
Searches for the following windows:
ClassName: 'Indicator' WindowName: '(null)'
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