Win32.HLLW.Autoruner2.28484
Added to the Dr.Web virus database:
2017-05-31
Virus description added:
2017-05-31
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:
Executes the following:
- '<SYSTEM32>\attrib.exe' +S +H +R C:\sysmgr.exe
- 'C:\sys32krnl.exe' 2
- 'C:\sysmgr.exe' 3
- '<SYSTEM32>\attrib.exe' +S +H E:\Autorun.inf
- '<SYSTEM32>\attrib.exe' +S +H +R E:\syskernel.exe
- '<SYSTEM32>\cmd.exe' /c C:\sys32krnl.exe 2
- '<SYSTEM32>\attrib.exe' +S +H +R C:\syswin.exe
- '<SYSTEM32>\attrib.exe' +S +H +R <SYSTEM32>\syskernel.exe
- '<SYSTEM32>\cmd.exe' /c C:\syswin.exe 1
- '<SYSTEM32>\attrib.exe' +S +H +R C:\sys32krnl.exe
- 'C:\syswin.exe' 1
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
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