Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe csrcs.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\mcexbz.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:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\ULU3YH2D\whatismyip[1].0300356243
- %TEMP%\~ip.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\whatismyip[1].9271139151
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\checkip.dyndns[1].5475783143
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\checkip.dyndns[1].4230330277
- %TEMP%\suicide.bat
- <SYSTEM32>\csrcs.exe
- <SYSTEM32>\autorun.inf
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\mcexbz.exe
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\csrcs.exe
- <SYSTEM32>\autorun.inf
Deletes the following files:
- %TEMP%\~ip.tmp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\SL6TKFAX\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\69I9OPW5\n09230945[1].asp
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\0D6B6PI5\n09230945[1].asp
Deletes itself.
Network activity:
Connects to:
- 'sa##.dip.jp':4590
- 'ki#.##akapatama.com':4800
- '<Private IP address>':445
- 'ud#.##utiesu.com':4580
- '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 sa##.dip.jp
- DNS ASK ki#.##akapatama.com
- DNS ASK ch####p.dyndns.org
- DNS ASK ud#.##utiesu.com
- DNS ASK www.wh###smyip.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
