Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Yahoo Messengger' = '<SYSTEM32>\SSVICHOSST.exe'
Creates or modifies the following files:
- %WINDIR%\Tasks\At1.job
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>:\New Folder.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
Modifies file system :
Creates the following files:
- <SYSTEM32>\autorun.ini
- %WINDIR%\SSVICHOSST.exe
- <SYSTEM32>\SSVICHOSST.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\autorun.ini
- <SYSTEM32>\SSVICHOSST.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
