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Win32.HLLW.Autoruner2.54087

Added to the Dr.Web virus database: 2019-07-29

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Update' = '"%TEMP%\Server.exe" ..'
  • [<HKLM>\Software\Microsoft\Windows\CurrentVersion\Run] 'Update' = '"%TEMP%\Server.exe" ..'
Creates or modifies the following files
  • %HOMEPATH%\start menu\programs\startup\update.exe
Malicious functions
To bypass firewall, removes or modifies the following registry keys
  • [<HKLM>\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\Server.exe' = '%TEMP%\Server.exe:*:Enabled:Server.exe'
Executes the following
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Server.exe" "Server.exe" ENABLE
Modifies file system
Creates the following files
  • %TEMP%\server.exe
Sets the 'hidden' attribute to the following files
  • <Full path to file>
  • %TEMP%\server.exe
Network activity
Connects to
  • 'fa###ook.com':443
  • 'st####.xx.fbcdn.net':443
  • 'fb##n.net':443
  • 'fb##x.com':443
  • 'co#####.facebook.net':443
  • 'cx.##dmt.com':443
  • 'google.com':443
  • 'gs##tic.com':443
  • 'fo###.#oogleapis.com':443
  • 'bb####7.zapto.org':666
  • 'pi###.facebook.com':443
TCP
HTTP GET requests
  • http://www.fa###ook.com/
UDP
  • DNS ASK fa###ook.com
  • DNS ASK st####.xx.fbcdn.net
  • DNS ASK fb##n.net
  • DNS ASK fb##x.com
  • DNS ASK co#####.facebook.net
  • DNS ASK cx.##dmt.com
  • DNS ASK google.com
  • DNS ASK gs##tic.com
  • DNS ASK fo###.#oogleapis.com
  • DNS ASK bb####7.zapto.org
  • DNS ASK pi###.facebook.com
Miscellaneous
Creates and executes the following
  • '%TEMP%\server.exe'
  • '<SYSTEM32>\notepad.exe' ' (with hidden window)
  • '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\Server.exe" "Server.exe" ENABLE' (with hidden window)
Executes the following
  • '<SYSTEM32>\notepad.exe'
  • '%ProgramFiles%\mozilla firefox\firefox.exe' -osint -url "http://www.fa###ook.com/"

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