Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WindowsUpdate' = '%APPDATA%\winupdate.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WindowsUpdate' = '%APPDATA%\winupdate.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'WindowsUpdate' = '<Full path to virus>'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'WindowsUpdate' = '<Full path to virus>'
Creates the following files on removable media:
- <Drive name for removable media>:\winupdate.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
Creates and executes the following:
- '%APPDATA%\winupdate.exe'
- '%TEMP%\w0ymlan4.za3.exe'
Executes the following:
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\cvtres.exe' /NOLOGO /READONLY /MACHINE:IX86 "/OUT:%TEMP%\RES2.tmp" "%TEMP%\CSC1.tmp"
- '%WINDIR%\Microsoft.NET\Framework\v2.0.50727\csc.exe' /noconfig /fullpaths @"%TEMP%\qpsp-ki8.cmdline"
Modifies file system :
Creates the following files:
- %TEMP%\CSC1.tmp
- %TEMP%\RES2.tmp
- %TEMP%\w0ymlan4.za3.exe
- %TEMP%\qpsp-ki8.out
- %APPDATA%\winupdate.exe
- %TEMP%\qpsp-ki8.0.cs
- %TEMP%\qpsp-ki8.cmdline
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\winupdate.exe
- <Drive name for removable media>:\autorun.inf
- %APPDATA%\winupdate.exe
Deletes the following files:
- %TEMP%\qpsp-ki8.out
- %TEMP%\qpsp-ki8.0.cs
- %TEMP%\qpsp-ki8.cmdline
- %TEMP%\RES2.tmp
- %TEMP%\CSC1.tmp
Deletes itself.
Network activity:
Connects to:
- 'xx####qoo.no-ip.org':5510
UDP:
- DNS ASK xx####qoo.no-ip.org
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''