Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'psysjo3' = 'C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe'
- [<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Shell' = 'explorer.exe,C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Taskman' = 'C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe'
Malicious functions:
Injects code into
the following system processes:
- %WINDIR%\Explorer.EXE
Modifies file system :
Creates the following files:
- C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\Desktop.ini
- C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe
Sets the 'hidden' attribute to the following files:
- C:\RECYCLER\S-1-5-21-0243556031-888888379-781863308-1455\psyjo3.exe
Network activity:
Connects to:
- 'ma###.joo3.com':8800
UDP:
- DNS ASK ma###.joo3.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
