Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '226255cc54aaffbd606ddbdf0483753b' = '"%TEMP%\hack.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '226255cc54aaffbd606ddbdf0483753b' = '"%TEMP%\hack.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\226255cc54aaffbd606ddbdf0483753b.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\hack.exe' = '%TEMP%\hack.exe:*:Enabled:hack.exe'
Creates and executes the following:
- '%TEMP%\hack.exe'
- '%WINDIR%\Server.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\hack.exe" "hack.exe" ENABLE
- '<SYSTEM32>\rundll32.exe' <SYSTEM32>\shimgvw.dll,ImageView_Fullscreen %WINDIR%\caroline.JPG
Modifies file system :
Creates the following files:
- %HOMEPATH%\Recent\caroline.lnk
- %WINDIR%\Server.exe
- %TEMP%\hack.exe
- %HOMEPATH%\Recent\WINDOWS.lnk
- %TEMP%\aut2.tmp
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %WINDIR%\caroline.JPG
- %TEMP%\aut1.tmp
Deletes the following files:
- %TEMP%\aut2.tmp
- %TEMP%\aut1.tmp
Moves the following files:
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch
- from %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new to %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch
Network activity:
Connects to:
- 'cr#####oc940.no-ip.info':1177
UDP:
- DNS ASK cr#####oc940.no-ip.info
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'ShImgVw:CPreviewWnd' WindowName: '(null)'