Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Yahoo Messengger' = '<SYSTEM32>\SSVICHOSST.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'Explorer.exe SSVICHOSST.exe'
Creates or modifies the following files:
- %WINDIR%\Tasks\At1.job
- %HOMEPATH%\Start Menu\Programs\Startup\IEXPLORE.EXE
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\SSVICHOSST.exe
- <Drive name for removable media>:\УЯУ ЭПнж ЗО нЫКХИ ЗОКе.exe
Malicious functions:
Executes the following:
- '<SYSTEM32>\at.exe' 09:00 /interactive /EVERY:m,t,w,th,f,s,su <SYSTEM32>\SSVICHOSST.exe
- '<SYSTEM32>\at.exe' /delete /yes
Sets a new unauthorized home page for Windows Internet Explorer.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\setting[1].nql
- <SYSTEM32>\autorun.ini
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\setting[1].nql
- <SYSTEM32>\setting.ini
- %TEMP%\jmqeqxo
- %TEMP%\aut1.tmp
- %WINDIR%\SSVICHOSST.exe
- <SYSTEM32>\SSVICHOSST.exe
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\setting.ini
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\SSVICHOSST.exe
- <SYSTEM32>\autorun.ini
Deletes the following files:
- <SYSTEM32>\wbem\Performance\WmiApRpl.ini
- <SYSTEM32>\PerfStringBackup.TMP
- %TEMP%\aut1.tmp
- %TEMP%\jmqeqxo
Network activity:
Connects to:
- 'nh#####nglan4.t35.com':80
- 'nh#####nglan3.t35.com':80
TCP:
HTTP GET requests:
- nh#####nglan4.t35.com/setting.nql
- nh#####nglan3.t35.com/setting.nql
UDP:
- DNS ASK nh#####nglan4.t35.com
- DNS ASK nh#####nglan3.t35.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
