Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Internet Explorer' = '%WINDIR%\winsrv.exe'
Malicious functions:
Creates and executes the following:
- '%WINDIR%\winsrv.exe'
Executes the following:
- '<SYSTEM32>\ping.exe' 12.34.56.78 -n 2
- '<SYSTEM32>\cmd.exe' /c ""<Current directory>\S45D_5TY7_V4T6_34U7.bat" "
Modifies file system :
Creates the following files:
- <Current directory>\S45D_5TY7_V4T6_34U7.bat
- %WINDIR%\winsrv.exe
Deletes itself.
Network activity:
Connects to:
- '10#.#1.241.110':80
- 'wp#d':80
TCP:
HTTP GET requests:
- wp#d/wpad.dat
UDP:
- DNS ASK mi#####ftb.byinter.net
- DNS ASK mi#####fta.byinter.net
- DNS ASK wp#d