RANSOM_MATRIX.A

To delete the registry value this malware created:

1. Open Registry Editor. To do this:
   » For Windows 2000, Windows XP, and Windows Server 2003 users, click Start>Run, type regedit in the text box provided, and then press Enter.
   » For Windows Vista, Windows 7, and Windows Server 2008 users, click the Start button, type regedit in the Search input field then press Enter.
   » For Windows 8, Windows 8.1, and Windows Server 2012 users, right-click on the lower left corner of the screen, click Run, type regedit in the text box provided, and then press Enter.
2. In the left panel of the Registry Editor window, double-click the following:
   HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Run
3. In the right panel, locate and delete the entry:
   {malware filename} = "{malware path}\{malware filename}.exe"
4. Again In the right panel, locate and delete the entry:
   {6 random characters} = "%Application Data%\{6 random characters}.vbs"
5. Close Registry Editor.

To delete malware/grayware/spyware folders:

For Windows 2000, Windows XP, and Windows Server 2003:

1. Right-click Start then click Search... or Find..., depending on the version of Windows you are running.
2. In the File name* input box, type:
   
   • %Application Data%\gnupg
3. In the Look In drop-down list, select My Computer, then press Enter.
4. Once located, select the folder then press SHIFT+DELETE to permanently delete the folder.
5. Repeat steps 2 to 4 for the remaining folders:
   • %Application Data%\gnupg
   *Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

1. Open a Windows Explorer window.
   • For Windows Vista, 7, and Server 2008 users, click Start>Computer.
   • For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
2. In the Search Computer/This PC input box, type:
   
   • %Application Data%\gnupg
3. Once located, select the file then press SHIFT+DELETE to permanently delete the folder.
4. Repeat steps 2-3 for the remaining folders:
   • %Application Data%\gnupg
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.

To manually delete a malware/grayware file from an affected system:

• For Windows 2000, Windows XP, and Windows Server 2003:

1. Right-click Start then click Search....
2. In the File name* input box, type the following:
   
   • %Application Data%\Microsoft\{6 random characters}.vbs
   • {malware path}\{random characters}.MTK
   • {malware path}\{6 random characters}.cmd
   • {malware path}\svchost.exe
   • {malware path}\autoclean.vbs
   • {folder of encrypted files}\matrix-readme.rtf
3. In the Look In drop-down list, select My Computer then press Enter.
4. Once located, select the file then press SHIFT+DELETE to delete it.
   *Note: The file name input box title varies depending on the Windows version (e.g. Search for files or folders named or All or part of the file name.).

• For Windows Vista, Windows 7, Windows Server 2008, Windows 8, Windows 8.1, and Windows Server 2012:

1. Open a Windows Explorer window.
   • For Windows Vista, 7, and Server 2008 users, click Start>Computer.
   • For Windows 8, 8.1, and Server 2012 users, right-click on the lower left corner of the screen, then click File Explorer.
2. In the Search Computer/This PC input box, type:
   
   • %Application Data%\Microsoft\{6 random characters}.vbs
   • {malware path}\{random characters}.MTK
   • {malware path}\{6 random characters}.cmd
   • {malware path}\svchost.exe
   • {malware path}\autoclean.vbs
   • {folder of encrypted files}\matrix-readme.rtf
3. Once located, select the file then press SHIFT+DELETE to delete it.
   *Note: Read the following Microsoft page if these steps do not work on Windows 7.