Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'
Malicious functions:
Creates and executes the following:
- '%TEMP%\IXP000.TMP\MYHAER~1.EXE'
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
the following user processes:
- msnmsgr.exe
Modifies file system :
Creates the following files:
- %PROGRAM_FILES%\Bifrost\server.exe
- %APPDATA%\addons.dat
Sets the 'hidden' attribute to the following files:
- %APPDATA%\addons.dat
- %PROGRAM_FILES%\Bifrost\server.exe
Deletes the following files:
- %TEMP%\IXP000.TMP\MYHAER~1.EXE
Network activity:
Connects to:
- 'ch####.no-ip.org':81
UDP:
- DNS ASK ch####.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
