#DEFEND YOUR CASTLE .SWF INSTALL#
#DEFEND YOUR CASTLE .SWF WINDOWS 8.1#

Use a diverse set of systems and operating systems if possible.Segregate the network such that damage impact is lessened.Remove the use or support of SMBv1 (see above).Use a backup scheme such as GFS (Grandfather, father, son).Use and maintain an anti-virus solution.Keep a recent backup of your system or critical user/business data.Make sure systems are patched, the vulnerabilities were patched in March of 2017.Measures users/enterprises can take to mitigate this ransomware and others includes: The ransomware leverages the first five vulnerabilities and exploits them. The last one allows for 'data disclosure'. The first five (and more critical) are ones that allow for remote arbitrary code execution. There are six major vulnerabilities in Microsoft's implementation of SMBv1.

#DEFEND YOUR CASTLE .SWF WINDOWS 8.1#

Those running Windows 8.1 or Windows Server 2012 R2 and later can disable the support by removing the Windows Feature for 'SMB1.0/CIFS File Sharing Support'. You can disable SMBv1 support, as per Microsoft's directions: In addition, those environments that do not support SMBv1 are also not affected. Those environments who do not use Microsoft's implementation, are unlikely to be affected by the exploit and related vulnerabilities. Windows Vista and onward allow for the use of SMBv1, even though they support the improved SMBv2 and v3 protocols. The SMBv1 protocol is commonly found in networked Windows environments, and includes operating systems such as Windows XP, Windows 7, 8, 8.1, and 10. It is an application level protocol used for sharing files and printers in a networked environment. The ransomware is using a known, publicly disclosed exploit in SMBv1 (Server Message Block Version 1). Make sure MS17-010 patches are installed.īackup all important data to an external hard drive or cloud storage service. After detecting the malware attack as MEM:, reboot the system.

#DEFEND YOUR CASTLE .SWF INSTALL#

Install the official Windows patch (MS17-010), which closes the SMB Server vulnerability used in this ransomware attack. Make sure that all hosts have enabled endpoint anti-malware solutions. The Microsoft patches for legacy versions of Windows were released last week after the attack. However, many companies and public organizations have not yet installed the patch to their systems. The EternalBlue exploit has been patched by Microsoft on March 14 and made publicly available through the 'Shadowbrokers dump' on April 14th, 2017. WannaCry attacks are initiated using an SMBv1 remote code execution vulnerability in Microsoft Windows OS.

Defend your castle .swf