Mapping NIST 800-53 controls to ATT&CK

Cybersecurity frameworks are the key starting point for any organization that wants to meet regulatory compliance and demonstrate security readiness to leadership. Still, compliance is hard, and every organization struggles to prove it. Today, we will be looking at how ATT&CK frameowrk helps to achieve this goal.

In ATT&CK framework, there are 2 some what related terms called TACTICS & TECHNIQUES. Tactics represent the “why” of an ATT&CK technique or sub-technique. It is the adversary’s tactical goal: the reason for performing an action, where as Techniques represent “how” an adversary achieves a tactical goal by performing an action.

With ATT&CK framework, we can do many things. but today we will be looking at defensive control mapping. Defensive controls can carry well-understood meaning when referenced against the ATT&CK tactics and techniques they apply to. ATT&CK offers really cool applications, such as ATT&CK Navigator. This provides the ability for users to define layers – custom views of an ATT&CK matrix – for example, showing just the techniques for a particular platform, highlighting techniques a specific adversary has been known to use, creating heat maps for heavily used techniques, or visualizing defensive coverage. Layers can be created interactively within the Navigator or generated programmatically and then visualized via the Navigator.

The below video gives a brief walktrough on ATT&CK Navigator

Once you get familar with the above solution, you may start with predefined NIST control templates (which is on Github). Continue reading “Mapping NIST 800-53 controls to ATT&CK”

vCenter 6.7 – error when adding new hosts

In Vcenter 6.7, when you try to add ESXi hosts you may end up with an error saying

“The certificate on 1 host could not be verified. The SHA1 thumbprints of the certificate is listed below. To continue connecting, manually verify this certificate and accept the thumbprint below”

In order to fix this issue, you simply can carry out below workarounds

  • Restart ESXi management agents
  • Fix Date/Time on the hosts
  • Verify/fix DNS entries of the host systems