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Win32.HLLW.Autoruner1.58434
Added to the Dr.Web virus database:
2013-10-15
Virus description added:
2013-10-15
Technical Information
To ensure autorun and distribution:
Creates the following files on removable media:
<Drive name for removable media>:\wfsujt.exe
<Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:ipsec'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
To complicate detection of its presence in the operating system,
forces the system hide from view:
blocks the following features:
User Account Control (UAC)
Windows Security Center
Injects code into
the following system processes:
a large number of user processes.
Modifies file system :
Creates the following files:
C:\autorun.inf
C:\cvybds.pif
%TEMP%\ymkih.exe
<DRIVERS>\nipko.sys
%TEMP%\winkewld.exe
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\wfsujt.exe
C:\autorun.inf
C:\cvybds.pif
Deletes the following files:
%TEMP%\ymkih.exe
%TEMP%\winkewld.exe
<DRIVERS>\nipko.sys
Network activity:
UDP:
DNS ASK ta#####bookcentre.com
DNS ASK gu###gul.com
DNS ASK www.pr#####osyancy.com.mx
DNS ASK www.sk######.#andomierz.opoka.org.pl
Miscellaneous:
Searches for the following windows:
ClassName: 'Shell_TrayWnd' WindowName: '(null)'
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