Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'c2372ce2aec065ce2621c091aa8fb2a0' = '"%HOMEPATH%\dllhost.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'c2372ce2aec065ce2621c091aa8fb2a0' = '"%HOMEPATH%\dllhost.exe" ..'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%HOMEPATH%\dllhost.exe' = '%HOMEPATH%\dllhost.exe:*:Enabled:dllhost.exe'
Creates and executes the following:
- '%HOMEPATH%\dllhost.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%HOMEPATH%\dllhost.exe" "dllhost.exe" ENABLE
Modifies file system :
Creates the following files:
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new
- %WINDIR%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new
- %HOMEPATH%\dllhost.exe
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:
- 'as#####cdfdf.no-ip.biz':1177
UDP:
- DNS ASK as#####cdfdf.no-ip.biz
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
