Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'IgrfxTray' = '<Current directory>\IgrfxTray.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'IgrfxTray' = '<Current directory>\IgrfxTray.exe'
Malicious functions:
Creates and executes the following:
- '%APPDATA%\Microsoft\Windows\Themes\IgrfxTray.exe'
Executes the following:
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %APPDATA%\Microsoft\Windows\Themes\IMG_20140127.jpg
Modifies file system :
Creates the following files:
- %APPDATA%\Microsoft\libhlp32.exe
- %APPDATA%\Microsoft\zlib1.dll
- %HOMEPATH%\Recent\Themes.lnk
- %HOMEPATH%\Recent\IMG_20140127.lnk
- %APPDATA%\Microsoft\Windows\Themes\IgrfxTray.exe
- %APPDATA%\Microsoft\Windows\Themes\IMG_20140127.jpg
- %APPDATA%\Microsoft\pthreadGC2.dll
- %APPDATA%\Microsoft\libcurl-4.dll
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
- ClassName: 'Indicator' WindowName: '(null)'
