Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '' = '%PROGRAM_FILES%\MicrosoftS\.exe'
Malicious functions:
Creates and executes the following:
- '%PROGRAM_FILES%\MicrosoftS\.exe'
Modifies file system :
Creates the following files:
- <SYSTEM32>\MSWINSCK.OCX
- %PROGRAM_FILES%\MicrosoftS\.exe
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\cfile29.uf@1374134851651210364722[1].OCX
Sets the 'hidden' attribute to the following files:
- %PROGRAM_FILES%\MicrosoftS\.exe
Deletes the following files:
- %TEMP%\~DFDA5B.tmp
Network activity:
Connects to:
- 'any':0
- 'bo####.tistory.com':80
- 'localhost':1035
TCP:
HTTP GET requests:
- bo####.tistory.com/attachment/cfile29.uf@1374134851651210364722.OCX
UDP:
- DNS ASK bo####.tistory.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
