Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'shell' = 'Explorer.exe "C:\RECYCLER\S-1-5-21-527237240-117609710-1177238915-500\crfmon.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\restore.exe
Malicious functions:
Creates and executes the following:
- C:\RECYCLER\S-1-5-21-527237240-117609710-1177238915-500\crfmon.exe
Hides the following processes:
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\mailer[1].pl
- C:\RECYCLER\S-1-5-21-527237240-117609710-1177238915-500\crfmon.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- C:\RECYCLER\S-1-5-21-527237240-117609710-1177238915-500\crfmon.exe
- <Drive name for removable media>:\restore.exe
Network activity:
Connects to:
- 'www.sh##han.net':80
- 'localhost':1037
- 'localhost':1036
TCP:
HTTP GET requests:
- www.sh##han.net/scripts/users/mailer.pl?fr#################################################################################################################################################
UDP:
- DNS ASK www.sh##han.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'MS_WebcheckMonitor' WindowName: ''
- ClassName: 'MS_AutodialMonitor' WindowName: ''