Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\driverupdates
Malicious functions
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG', WindowName: ''
- ClassName: 'GBDYLLO', WindowName: ''
- ClassName: 'pediy06', WindowName: ''
- ClassName: 'FilemonClass', WindowName: ''
- ClassName: '', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
- ClassName: '', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
- ClassName: 'RegmonClass', WindowName: ''
- ClassName: '', WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'
Modifies file system
Creates the following files
- %TEMP%\islcptyn.0.cs
- %TEMP%\islcptyn.cmdline
- %TEMP%\islcptyn.out
- %TEMP%\cscf5d3.tmp
- %TEMP%\resf5d4.tmp
- %TEMP%\islcptyn.dll
- %TEMP%\3vyut1za.0.cs
- %TEMP%\3vyut1za.cmdline
- %TEMP%\3vyut1za.out
- %TEMP%\csc5560.tmp
- %TEMP%\res5561.tmp
- %TEMP%\3vyut1za.dll
Deletes the following files
- %TEMP%\resf5d4.tmp
- %TEMP%\cscf5d3.tmp
- %TEMP%\islcptyn.cmdline
- %TEMP%\islcptyn.dll
- %TEMP%\islcptyn.0.cs
- %TEMP%\islcptyn.out
- %TEMP%\res5561.tmp
- %TEMP%\csc5560.tmp
- %TEMP%\3vyut1za.out
- %TEMP%\3vyut1za.dll
- %TEMP%\3vyut1za.0.cs
- %TEMP%\3vyut1za.cmdline
Network activity
Connects to
- 'microsoft.com':80
- '74.##8.208.183':27020
- 'oc##.thawte.com':80
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
- http://oc##.thawte.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQwF4prw9S7mCbCEHD%2Fyl6nWPkczAQUe1tFz6%2FOy3r9MZIaarbzRutXSFACEEeXTXhzpbyrDS%2BzcBkvzl4%3D
UDP
- DNS ASK microsoft.com
- DNS ASK oc##.thawte.com
Miscellaneous
Searches for the following windows
- ClassName: '18467-41' WindowName: ''
Creates and executes the following
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\islcptyn.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESF5D4.tmp" "%TEMP%\CSCF5D3.tmp"' (with hidden window)
- '<Full path to file>' ' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\3vyut1za.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5561.tmp" "%TEMP%\CSC5560.tmp"' (with hidden window)
Executes the following
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\islcptyn.cmdline"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESF5D4.tmp" "%TEMP%\CSCF5D3.tmp"
- '<SYSTEM32>\taskeng.exe' {32646480-D8DF-4C92-9EDF-F34D554BC08A} S-1-5-21-1960123792-2022915161-3775307078-1001:qcsslxmoc\user:Interactive:[1]
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\3vyut1za.cmdline"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5561.tmp" "%TEMP%\CSC5560.tmp"
