Technical Information
Malicious functions:
To complicate detection of its presence in the operating system,
modifies the following system settings:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe'
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES4.tmp" "%TEMP%\CSC3.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\fyohllta.cmdline"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\CSC1.tmp"
Injects code into
the following system processes:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\vbc.exe
Terminates or attempts to terminate
the following user processes:
- outpost.exe
- ge.exe
Modifies file system:
Creates the following files:
- %TEMP%\fyohllta.dll
- %TEMP%\RES2.tmp
- %TEMP%\RES4.tmp
- %TEMP%\CSC3.tmp
- %TEMP%\fyohllta.cmdline
- %TEMP%\fyohllta.0.cs
- %TEMP%\CSC1.tmp
- %TEMP%\fyohllta.out
Deletes the following files:
- %TEMP%\fyohllta.out
- %TEMP%\fyohllta.cmdline
- %TEMP%\CSC3.tmp
- %TEMP%\RES4.tmp
- %TEMP%\CSC1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\fyohllta.0.cs
- %TEMP%\fyohllta.dll
