Steven Wood

About Steven Wood

@StevenWDKSenior Security and Identity Consultant.Working with Microsoft Products, Network Security since 1996.

Petya Ransomware – The Attack method and Preventing it

Todays News is all about Petya - but the way it gets onto PCs and spreads across the network is actually old news. In short, Petya does 3 things: Encrypt your files, Steal credentials, spread to other machines. It takes advantage of the "Shadow Broker Vulnerability" MS17-010. If you have patched your machine, you will not be hit with the SMB exploit. How ever it also use Mimikatz like capabilities to steal credentials from the local machine and copy it self to other machines $Admin share. A kill-switch has been described as simple as creating a file called C:\Windows\perfc (without [...]