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Win32.HLLW.Autohit.13549
Added to the Dr.Web virus database:
2013-10-08
Virus description added:
2013-10-08
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:
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\U98D4X8H\checkip.dyndns[1].1061772697
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\whatismyip[1].9183545746
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\whatismyip[1].7329091141
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\checkip.dyndns[1].30747500225
%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%\ttwhmnq
%TEMP%\aut1.tmp
%TEMP%\aut2.tmp
<SYSTEM32>\autorun.inf
%TEMP%\suicide.bat
%TEMP%\mckgjtk
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%\ttwhmnq
%TEMP%\aut1.tmp
%TEMP%\mckgjtk
%TEMP%\aut2.tmp
Deletes itself.
Network activity:
Connects to:
'ch###hu.or.tp':2547
'ma###dro.or.tp':2547
'su####.akakapatama.com':2547
'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
ch####p.dyndns.org/?rn#########################################
UDP:
DNS ASK ch###hu.or.tp
DNS ASK ma###dro.or.tp
DNS ASK su####.akakapatama.com
DNS ASK www.wh###smyip.com
DNS ASK ch####p.dyndns.org
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