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