Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'Esent Utl' = '%APPDATA%\Microsoft\esentutl.exe /waitservice'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'load' = '%WINDIR%\System\clipsrv.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run] 'ComRepl' = '%TEMP%\comrepl.exe /waitservice'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run] 'CmSTP' = '%WINDIR%\System\cmstp.exe /waitservice'
Malicious functions:
Creates and executes the following:
- '%WINDIR%\system\clipsrv.exe' /waitservice
Modifies file system :
Creates the following files:
- %APPDATA%\Microsoft\esentutl.exe
- %WINDIR%\system\clipsrv.exe
- %TEMP%\comrepl.exe
- %WINDIR%\system\cmstp.exe
Network activity:
Connects to:
- 'www.na##rum.com':80
TCP:
HTTP GET requests:
- http://www.na##rum.com/img/gt.cgi?s=#################
UDP:
- DNS ASK www.na##rum.com
