Win32.HLLW.Autoruner2.30967
Added to the Dr.Web virus database:
2017-12-23
Virus description added:
2017-12-23
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'b2af3197c7104e4fe5c825892590e755' = '"%APPDATA%\explorer.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'b2af3197c7104e4fe5c825892590e755' = '"%APPDATA%\explorer.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\b2af3197c7104e4fe5c825892590e755.exe
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\b2af3197c7104e4fe5c825892590e755.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%APPDATA%\explorer.exe' = '%APPDATA%\explorer.exe:*:Enabled:explorer.e...
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 "%APPDATA%\explorer.exe" "explorer.exe" ENABLE
Modifies file system:
Creates the following files:
Sets the 'hidden' attribute to the following files:
- %APPDATA%\explorer.exe
- %HOMEPATH%\Start Menu\Programs\Startup\b2af3197c7104e4fe5c825892590e755.exe
- <Drive name for removable media>:\b2af3197c7104e4fe5c825892590e755.exe
- <Drive name for removable media>:\autorun.inf
Miscellaneous:
Creates and executes the following:
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