Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'msdn.exe' = '%TEMP%\msdn.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\Sys.exe
Malicious functions:
Creates and executes the following:
- %TEMP%\ca6bcb87-d4eb-418b-96f4-32395b567f01.exe
- %TEMP%\msdn.exe
- %TEMP%\ca6bcb87-d4eb-418b-96f4-32395b567f01.exe (downloaded from the Internet)
Modifies file system :
Creates the following files:
- C:\autorun.inf
- %TEMP%\ca6bcb87-d4eb-418b-96f4-32395b567f01.exe
- %TEMP%\msdn.exe
- C:\Sys.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Sys.exe
- <Drive name for removable media>:\autorun.inf
- C:\autorun.inf
- %TEMP%\msdn.exe
- C:\Sys.exe
Network activity:
Connects to:
- '4k####.myftp.biz':80
- 'wp#d':80
TCP:
HTTP GET requests:
- 4k####.myftp.biz/file.exe
- wp#d/wpad.dat
UDP:
- DNS ASK 4k####.myftp.biz
- DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
