Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'MozillaUpdate' = '<Full path to file>'
Malicious functions
Injects code into
the following system processes:
- %WINDIR%\microsoft.net\framework\v4.0.30319\installutil.exe
Modifies file system
Creates the following files
- %TEMP%\ydgecldt.0.cs
- %TEMP%\ydgecldt.cmdline
- %TEMP%\ydgecldt.out
- %TEMP%\csc3dad9e4af0824c8da9a1aab8d59657eb.tmp
- %TEMP%\res2f1b.tmp
- %TEMP%\ydgecldt.dll
- %TEMP%\rudianzx.0.cs
- %TEMP%\rudianzx.cmdline
- %TEMP%\rudianzx.out
- %TEMP%\cscb040fcc423b543d781e9a8984d421661.tmp
- %TEMP%\res3497.tmp
- %TEMP%\rudianzx.dll
Deletes the following files
- %TEMP%\res2f1b.tmp
- %TEMP%\csc3dad9e4af0824c8da9a1aab8d59657eb.tmp
- %TEMP%\ydgecldt.0.cs
- %TEMP%\ydgecldt.out
- %TEMP%\ydgecldt.dll
- %TEMP%\ydgecldt.cmdline
- %TEMP%\res3497.tmp
- %TEMP%\cscb040fcc423b543d781e9a8984d421661.tmp
- %TEMP%\rudianzx.0.cs
- %TEMP%\rudianzx.dll
- %TEMP%\rudianzx.out
- %TEMP%\rudianzx.cmdline
Network activity
Connects to
- 'Se#########leChrome-47035.portmap.host':47035
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
UDP
- DNS ASK Se#########leChrome-47035.portmap.host
- DNS ASK se#####7rbe.ddns.net
- DNS ASK microsoft.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\ydgecldt.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2F1B.tmp" "%TEMP%\CSC3DAD9E4AF0824C8DA9A1AAB8D59657EB.TMP"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\rudianzx.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES3497.tmp" "%TEMP%\CSCB040FCC423B543D781E9A8984D421661.TMP"' (with hidden window)
Executes the following
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\ydgecldt.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2F1B.tmp" "%TEMP%\CSC3DAD9E4AF0824C8DA9A1AAB8D59657EB.TMP"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\regasm.exe'
- '%WINDIR%\microsoft.net\framework\v4.0.30319\csc.exe' /noconfig /fullpaths @"%TEMP%\rudianzx.cmdline"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES3497.tmp" "%TEMP%\CSCB040FCC423B543D781E9A8984D421661.TMP"
- '%WINDIR%\microsoft.net\framework\v4.0.30319\installutil.exe'
