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Win32.HLLW.Simbot.43

Added to the Dr.Web virus database: 2013-07-11

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'FACEBLOG' = '%APPDATA%\sploover.exe'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'FACEBLOG' = '%TEMP%\4.tmp'
Malicious functions:
Creates and executes the following:
  • '%APPDATA%\sploover.exe'
  • '%TEMP%\4.tmp'
  • '%TEMP%\2.tmp'
Modifies file system :
Creates the following files:
  • %TEMP%\5.tmp
  • %TEMP%\4.tmp
  • %TEMP%\6.tmp
  • %APPDATA%\sploover.exe
  • %ALLUSERSPROFILE%\Application Data\NTUSER.DAT
  • %TEMP%\mgrp1372
  • %TEMP%\1.tmp
  • %TEMP%\3.tmp
  • %TEMP%\2.tmp
Sets the 'hidden' attribute to the following files:
  • %APPDATA%\sploover.exe
  • %ALLUSERSPROFILE%\Application Data\NTUSER.DAT
Deletes the following files:
  • %TEMP%\4.tmp
  • %TEMP%\6.tmp
  • %APPDATA%\sploover.exe
  • %TEMP%\5.tmp
  • %TEMP%\1.tmp
  • %TEMP%\3.tmp
  • %TEMP%\mgrp1372
Deletes itself.
Network activity:
Connects to:
  • '59.##0.169.51':1863
  • '59.##0.169.51':80
  • '59.##0.169.51':443
TCP:
HTTP POST requests:
  • 59.##0.169.51/0000/a174078.asp
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Indicator' WindowName: '(null)'
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'
  • ClassName: 'WordPadClass' WindowName: '(null)'