Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'wexplorer' = '%APPDATA%\Microsoft\SysWOW_x86_64\csrssys.exe'
Malicious functions:
Creates and executes the following:
- '%APPDATA%\Microsoft\SysWOW_x86_64\csrssys.exe'
Modifies file system :
Creates the following files:
- %APPDATA%\Microsoft\SysWOW_x86_64\srv_x86.ocx
- %APPDATA%\Microsoft\SysWOW_x86_64\cygwin32.bin
- %APPDATA%\Microsoft\SysWOW_x86_64\csrssys.exe
- %APPDATA%\Microsoft\SysWOW_x86_64\srv_x86\openssh.ocx
- %APPDATA%\Microsoft\SysWOW_x86_64\srv_x86\nthserv.img
- %APPDATA%\Microsoft\SysWOW_x86_64\srv_x86\icxml.exe
- %APPDATA%\Microsoft\SysWOW_x86_64\srv_x86\ntw32.bin
Sets the 'hidden' attribute to the following files:
- %APPDATA%\Microsoft\SysWOW_x86_64\csrssys.exe
Deletes the following files:
- %APPDATA%\Microsoft\SysWOW_x86_64\csrssys.exe
Network activity:
Connects to:
- '<Private IP address>':80
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
