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Win32.Botgor.1

Added to the Dr.Web virus database: 2014-08-31

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'IcwRmind' = ''
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%WINDIR%\system\bot1.exe,'
Changes the following executable system files:
  • <SYSTEM32>\sndrec32.exe
  • <SYSTEM32>\taskmgr.exe
  • <SYSTEM32>\mspaint.exe
  • <SYSTEM32>\calc.exe
  • <SYSTEM32>\notepad.exe
Infects the following executable files:
  • <SYSTEM32>\sndrec32.exe
  • <SYSTEM32>\taskmgr.exe
  • <SYSTEM32>\mspaint.exe
  • <SYSTEM32>\calc.exe
  • <SYSTEM32>\notepad.exe
Malicious functions:
Creates and executes the following:
  • '%WINDIR%\system\bot1.exe'
Injects code into
the following system processes:
  • %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
  • %TEMP%\RCXE.tmp
  • %TEMP%\RCXF.tmp
  • %TEMP%\botD.tmp
  • %TEMP%\RCXB.tmp
  • %TEMP%\RCXC.tmp
  • %TEMP%\bot13.tmp
  • %TEMP%\RCX14.tmp
  • %TEMP%\RCX12.tmp
  • %TEMP%\bot10.tmp
  • %TEMP%\RCX11.tmp
  • %TEMP%\botA.tmp
  • %TEMP%\bot3.tmp
  • %TEMP%\bot4.tmp
  • %TEMP%\bot2.tmp
  • %WINDIR%\system\bot1.exe
  • %WINDIR%\system\RCX1.tmp
  • %TEMP%\RCX8.tmp
  • %TEMP%\RCX9.tmp
  • %TEMP%\bot7.tmp
  • %TEMP%\RCX5.tmp
  • %TEMP%\RCX6.tmp
Deletes the following files:
  • %TEMP%\botA.tmp
  • %TEMP%\bot7.tmp
  • %TEMP%\bot10.tmp
  • %TEMP%\botD.tmp
  • %TEMP%\bot2.tmp
  • %WINDIR%\system\bot1.exe
  • %TEMP%\bot4.tmp
  • %TEMP%\bot3.tmp
Moves the following files:
  • from %TEMP%\RCXE.tmp to %TEMP%\botD.tmp
  • from %TEMP%\RCXC.tmp to %TEMP%\botA.tmp
  • from %TEMP%\RCXF.tmp to %TEMP%\botD.tmp
  • from %TEMP%\RCX12.tmp to %TEMP%\bot10.tmp
  • from %TEMP%\RCX11.tmp to %TEMP%\bot10.tmp
  • from %TEMP%\RCXB.tmp to %TEMP%\botA.tmp
  • from %TEMP%\RCX5.tmp to %TEMP%\bot4.tmp
  • from %WINDIR%\system\RCX1.tmp to %WINDIR%\system\bot1.exe
  • from %TEMP%\RCX6.tmp to %TEMP%\bot4.tmp
  • from %TEMP%\RCX9.tmp to %TEMP%\bot7.tmp
  • from %TEMP%\RCX8.tmp to %TEMP%\bot7.tmp
Network activity:
Connects to:
  • 'www.br###-lab.org':80
TCP:
HTTP GET requests:
  • www.br###-lab.org/botnet1/bots_controller.php?gu####################################################################
UDP:
  • DNS ASK www.br###-lab.org