Technical Information
To ensure autorun and distribution:
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Microsoft\RUNDLL32.LNK
- %HOMEPATH%\Start Menu\Programs\Startup\RUNDLL32.LNK
- %HOMEPATH%\Start Menu\Programs\Microsoft\Shortcut to startup_local.lnk
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\wuauserv] 'Start' = '00000002'
Malicious functions:
Executes the following:
- <SYSTEM32>\rundll32.exe "<SYSTEM32>\ausrv.dll",CRestart
- <SYSTEM32>\notepad.exe "%WINDIR%\winhelp.exe"
Modifies file system :
Creates the following files:
- %TEMP%\vmmE809.tmp
- %TEMP%\RCX2.tmp
- %TEMP%\vmm1.tmp
Deletes the following files:
- %TEMP%\vmmE809.tmp
- %TEMP%\vmm1.tmp
Moves the following files:
- from %TEMP%\vmm1.tmp to <SYSTEM32>\ausrv.dll
- from %TEMP%\RCX2.tmp to %TEMP%\vmm1.tmp
Miscellaneous:
Searches for the following windows:
- ClassName: 'Notepad' WindowName: ''