Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'system' = '<SYSTEM32>\system.exe'
Malicious functions:
Creates and executes the following:
- '<SYSTEM32>\system.exe'
Executes the following:
- '<SYSTEM32>\regsvr32.exe' <SYSTEM32>\MSWINSCK.OCX /s
Modifies file system :
Creates the following files:
- <SYSTEM32>\YMSG.dll
- <SYSTEM32>\MSWINSCK.OCX
- <SYSTEM32>\system.exe
Network activity:
Connects to:
- 'ms##.ath.cx':1412
UDP:
- DNS ASK sc#.##g.yahoo.com
- DNS ASK ms##.ath.cx
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
