Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '361c5445242f9f7af5395145cc636e43' = '"%TEMP%\YAHOO.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '361c5445242f9f7af5395145cc636e43' = '"%TEMP%\YAHOO.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\361c5445242f9f7af5395145cc636e43.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\YAHOO.exe' = '%TEMP%\YAHOO.exe:*:Enabled:YAHOO.exe'
Creates and executes the following:
- '%TEMP%\YAHOO.exe'
- '<LS_APPDATA>DDKSFuvlTJ.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\YAHOO.exe" "YAHOO.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen <LS_APPDATA>GosWTxaRkc..jpg
Modifies file system :
Creates the following files:
- %HOMEPATH%\Recent\Application DataGosWTxaRkc..lnk
- %HOMEPATH%\Recent\Local Settings.lnk
- %TEMP%\YAHOO.exe
- <LS_APPDATA>DDKSFuvlTJ.exe
- <LS_APPDATA>GosWTxaRkc..jpg
Network activity:
Connects to:
- 'hs####y.ddns.net':1177
UDP:
- DNS ASK hs####y.ddns.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'
