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Win32.HLLW.Autoruner1.40792

Added to the Dr.Web virus database: 2013-07-29

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'aa0rab9' = 'C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\aara9.exe'
  • [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe,C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\aara9.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Taskman' = 'C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\aara9.exe'
Malicious functions:
Executes the following:
  • '<SYSTEM32>\wsqmcons.exe'
  • '<SYSTEM32>\rundll32.exe' dfdts.dll,DfdGetDefaultPolicyAndSMART
  • '<SYSTEM32>\schtasks.exe' /delete /f /TN "Microsoft\Windows\Customer Experience Improvement Program\Uploader"
  • '<SYSTEM32>\sc.exe' start w32time task_started
  • '<SYSTEM32>\sdclt.exe' /CONFIGNOTIFICATION
  • '<SYSTEM32>\taskhost.exe' $(Arg0)
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • C:\ProgramData\Microsoft\RAC\Temp\sqlBBDF.tmp
  • C:\ProgramData\Microsoft\RAC\Temp\sqlBC4D.tmp
  • C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\aara9.exe
  • C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\Desktop.ini
Sets the 'hidden' attribute to the following files:
  • C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-82290\aara9.exe
Deletes the following files:
  • C:\ProgramData\Microsoft\RAC\Temp\sqlBBDF.tmp
  • C:\ProgramData\Microsoft\RAC\Temp\sqlBC4D.tmp
Network activity:
Connects to:
  • 'any':8800
  • 'dq.##1mb4.info':8800
UDP:
  • DNS ASK ti##.#indows.com
  • DNS ASK dn#.##ftncsi.com
  • DNS ASK dq.##1mb4.info
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'Indicator' WindowName: '(null)'
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