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Win32.HLLW.Autohit.12824
Added to the Dr.Web virus database:
2011-10-27
Virus description added:
2011-10-28
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
Creates and executes the following:
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\0D6B6PI5\checkip.dyndns[1].5498303762
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\ULU3YH2D\whatismyip[1].8448980949
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\whatismyip[1].262492764974
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\checkip.dyndns[1].6848898162
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
<SYSTEM32>\csrcs.exe
%TEMP%\chfkgqh
%TEMP%\aut1.tmp
%TEMP%\suicide.bat
<SYSTEM32>\autorun.inf
%TEMP%\vnyempb
%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\0D6B6PI5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
%TEMP%\~ip.tmp
%TEMP%\chfkgqh
%TEMP%\aut1.tmp
%TEMP%\vnyempb
%TEMP%\aut2.tmp
Deletes itself.
Network activity:
Connects to:
'hu###s.dip.jp':6854
'nj###.orz.hm':6854
'ut#.#luenq.com':6854
'www.wh###smyip.com':80
'ch####p.dyndns.org':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 ut#.#luenq.com
DNS ASK hu###s.dip.jp
DNS ASK nj###.orz.hm
DNS ASK www.wh###smyip.com
DNS ASK ch####p.dyndns.org
'<Private IP address>':1035
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