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Win32.HLLW.Autoruner2.41800
Added to the Dr.Web virus database:
2018-07-17
Virus description added:
2018-07-17
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '267e5b5201e188cda7c734714f254dde' = '"%HOMEPATH%\explorer.exe" ..'
[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '267e5b5201e188cda7c734714f254dde' = '"%HOMEPATH%\explorer.exe" ..'
Creates or modifies the following files:
%HOMEPATH%\Start Menu\Programs\Startup\267e5b5201e188cda7c734714f254dde.exe
Creates the following files on removable media:
<Drive name for removable media>:\267e5b5201e188cda7c734714f254dde.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\AuthorizedApplications\List] '%HOMEPATH%\explorer.exe' = '%HOMEPATH%\explorer.exe:*:Enabled:explorer...
To complicate detection of its presence in the operating system,
forces the system hide from view:
Executes the following:
'<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\explorer.exe" "explorer.exe" ENABLE
Modifies file system:
Creates the following files:
Sets the 'hidden' attribute to the following files:
<Drive name for removable media>:\267e5b5201e188cda7c734714f254dde.exe
<Drive name for removable media>:\autorun.inf
%HOMEPATH%\explorer.exe
%HOMEPATH%\Start Menu\Programs\Startup\267e5b5201e188cda7c734714f254dde.exe
Network activity:
Connects to:
'za####ack.ddns.net':1177
'localhost':1177
UDP:
DNS ASK za####ack.ddns.net
Miscellaneous:
Creates and executes the following:
'%HOMEPATH%\explorer.exe'
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