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Profil

Win32.HLLW.Autohit.15003

Added to the Dr.Web virus database: 2014-05-26

Virus description added:

Technical Information

To ensure autorun and distribution:
Modifies the following registry keys:
  • [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'
  • [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'csrcs' = '<SYSTEM32>\csrcs.exe'
Malicious functions:
Creates and executes the following:
  • '<SYSTEM32>\csrcs.exe'
Executes the following:
  • '<SYSTEM32>\ping.exe' -n 5 -w 250 127.0.0.1
  • '<SYSTEM32>\cmd.exe' /c %TEMP%\suicide.bat
Modifies file system :
Creates the following files:
  • %TEMP%\~ip.tmp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\checkip.dyndns[1].5927693979
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\whatismyip[1].6894760523
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\whatismyip[1].8693307135
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\checkip.dyndns[1].5611370113
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\n09230945[1].asp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\n09230945[1].asp
  • <SYSTEM32>\csrcs.exe
  • %TEMP%\vghnmze
  • %TEMP%\aut1.tmp
  • %TEMP%\suicide.bat
  • <SYSTEM32>\autorun.inf
  • %TEMP%\csdccjr
  • %TEMP%\aut2.tmp
Sets the 'hidden' attribute to the following files:
  • <SYSTEM32>\autorun.inf
  • <SYSTEM32>\csrcs.exe
Deletes the following files:
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\n09230945[1].asp
  • %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\YPORKZYZ\n09230945[1].asp
  • %TEMP%\~ip.tmp
  • %TEMP%\vghnmze
  • %TEMP%\aut1.tmp
  • %TEMP%\csdccjr
  • %TEMP%\aut2.tmp
Deletes itself.
Network activity:
Connects to:
  • 'io###u.dip.jp':49872
  • 'ut##.#0afdone.com':88
  • 'ch####p.dyndns.org':80
  • 'ju###lp.moe.hm':2547
  • 'www.wh###smyip.com':80
TCP:
HTTP GET requests:
  • www.wh###smyip.com/?rn#########################################
  • ch####p.dyndns.org/?rn#########################################
  • www.wh###smyip.com/automation/n09230945.asp
UDP:
  • DNS ASK io###u.dip.jp
  • DNS ASK ut##.#0afdone.com
  • DNS ASK ch####p.dyndns.org
  • DNS ASK ju###lp.moe.hm
  • DNS ASK www.wh###smyip.com
Miscellaneous:
Searches for the following windows:
  • ClassName: 'Shell_TrayWnd' WindowName: '(null)'