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:
- hidden files
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].787271623
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\2VAZY7AN\whatismyip[1].26381963585
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\whatismyip[1].2056438089
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\checkip.dyndns[1].6189343771
- %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%\tckfcax
- %TEMP%\aut1.tmp
- %TEMP%\aut2.tmp
- %TEMP%\suicide.bat
- <SYSTEM32>\autorun.inf
- %TEMP%\exntjps
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%\tckfcax
- %TEMP%\aut1.tmp
- %TEMP%\exntjps
- %TEMP%\aut2.tmp
Deletes itself.
Network activity:
Connects to:
- 'gi###iru.or.tp':88
- 'ma###dro.or.tp':88
- '85#####.ghutiesu.com':88
- 'www.wh###smyip.com':80
- 'ch####p.dyndns.org':80
TCP:
HTTP GET requests:
- ch####p.dyndns.org/?rn#######################################
- www.wh###smyip.com/?rn#########################################
- www.wh###smyip.com/?rn########################################
- www.wh###smyip.com/automation/n09230945.asp
- ch####p.dyndns.org/?rn########################################
UDP:
- DNS ASK gi###iru.or.tp
- DNS ASK ma###dro.or.tp
- DNS ASK 85#####.ghutiesu.com
- DNS ASK www.wh###smyip.com
- DNS ASK ch####p.dyndns.org
