Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'sysBoot' = '<SYSTEM32>\syskernel.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'sysStart' = 'C:\syswin.exe 1'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'sysBoot' = '<SYSTEM32>\syskernel.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'sysStart' = 'C:\syswin.exe 1'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
- <Drive name for removable media>:\syskernel.exe
- <Drive name for removable media>:\New Folder1.exe
Malicious functions:
Creates and executes the following:
- C:\sysmgr.exe 3
- C:\sys32krnl.exe 2
- C:\syswin.exe 1
Executes the following:
- <SYSTEM32>\attrib.exe +S +H +R C:\sysmgr.exe
- <SYSTEM32>\attrib.exe +S +H +R E:\syskernel.exe
- <SYSTEM32>\attrib.exe +S +H E:\Autorun.inf
- <SYSTEM32>\attrib.exe +S +H +R <SYSTEM32>\syskernel.exe
- <SYSTEM32>\attrib.exe +S +H +R C:\syswin.exe
- <SYSTEM32>\attrib.exe +S +H +R C:\sys32krnl.exe
Modifies file system :
Creates the following files:
- C:\sys32krnl.exe
- C:\sysmgr.exe
- <SYSTEM32>\syskernel.exe
- C:\syswin.exe
Sets the 'hidden' attribute to the following files:
- C:\sysmgr.exe
- <Drive name for removable media>:\syskernel.exe
- <Drive name for removable media>:\Autorun.inf
- <SYSTEM32>\syskernel.exe
- C:\syswin.exe
- C:\sys32krnl.exe
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
