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%\xzdrnzn3.0.cs
- %TEMP%\xzdrnzn3.cmdline
- %TEMP%\xzdrnzn3.out
- %TEMP%\csc5dd8.tmp
- %TEMP%\res5dd9.tmp
- %TEMP%\xzdrnzn3.dll
- %TEMP%\6leler2b.0.cs
- %TEMP%\6leler2b.cmdline
- %TEMP%\6leler2b.out
- %TEMP%\cscbdd2.tmp
- %TEMP%\resbde3.tmp
- %TEMP%\6leler2b.dll
Deletes the following files
- %TEMP%\res5dd9.tmp
- %TEMP%\csc5dd8.tmp
- %TEMP%\xzdrnzn3.0.cs
- %TEMP%\xzdrnzn3.cmdline
- %TEMP%\xzdrnzn3.dll
- %TEMP%\xzdrnzn3.out
- %TEMP%\resbde3.tmp
- %TEMP%\cscbdd2.tmp
- %TEMP%\6leler2b.dll
- %TEMP%\6leler2b.0.cs
- %TEMP%\6leler2b.cmdline
- %TEMP%\6leler2b.out
Network activity
Connects to
- 'microsoft.com':80
- '74.##8.208.183':27020
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
UDP
- DNS ASK microsoft.com
- DNS ASK public-trust.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%\xzdrnzn3.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5DD9.tmp" "%TEMP%\CSC5DD8.tmp"' (with hidden window)
- '<Full path to file>' ' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\6leler2b.cmdline"' (with hidden window)
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESBDE3.tmp" "%TEMP%\CSCBDD2.tmp"' (with hidden window)
Executes the following
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\xzdrnzn3.cmdline"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES5DD9.tmp" "%TEMP%\CSC5DD8.tmp"
- '<SYSTEM32>\taskeng.exe' {BA4B4F55-5813-4878-A939-390E9A3497D2} S-1-5-21-1960123792-2022915161-3775307078-1001:ixdlckxfkc\user:Interactive:[1]
- '%WINDIR%\microsoft.net\framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\6leler2b.cmdline"
- '%WINDIR%\microsoft.net\framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RESBDE3.tmp" "%TEMP%\CSCBDD2.tmp"
