Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'NAVGuard_Service' = '%WINDIR%\Help\systemhelp.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'JavCoreUpdateUtility' = '%WINDIR%\sched.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\MULTI_VIDEO_CODEC_PACK.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%WINDIR%\sched.exe' = '%WINDIR%\sched.exe:*:Enabled:Windows Update Agent'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<Full path to virus>' = '<Full path to virus>:*:Enabled:Windows Update Agent'
Creates and executes the following:
- %WINDIR%\sched.exe
Modifies settings of Windows Internet Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Associations] 'LowRiskFileTypes' = '.exe;.chm;.msw'
Modifies file system :
Creates the following files:
- %WINDIR%\Help\systemhelp.exe
- %WINDIR%\sched.exe
- <SYSTEM32>\ntmsmgr.msw
Sets the 'hidden' attribute to the following files:
- %WINDIR%\Help\systemhelp.exe
- <Drive name for removable media>:\autorun.inf
- <SYSTEM32>\ntmsmgr.msw
- %WINDIR%\sched.exe
Network activity:
Connects to:
- 'ip#####try.hackers.lv':80
TCP:
HTTP GET requests:
- ip#####try.hackers.lv/
UDP:
- DNS ASK ip#####try.hackers.lv
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
- ClassName: '#32770' WindowName: ''
- ClassName: 'SysListView32' WindowName: ''
- ClassName: 'MS_WINHELP' WindowName: ''
- ClassName: '' WindowName: 'The Wireshark Network Analyzer'
- ClassName: '' WindowName: 'SysAnalyzer'