Category: Defense

Defense

CVE-2022-26809 – Critical Windows RPC Vulnerability

Vulnerability Information

RatingCritical
CVEcve-2022-26809
MITRECVE – CVE-2022-26809 (mitre.org)
CVSSCVSS:3.1 9.8
ImpactRemote Code Execution (RCE)
Exploit in the wildCurrently not observed
Difficulty to Exploit (if PoC available)Very Low
Network PositionTCP/IP Routable or Network Adjacent
Authentication Required to ExploitNo
AffectedWindows Client/Server OS
Typical Service PortsTCP 135,139,445
Vendor Patch AvailableYes
Exploitable in Default OOB (out of the box) configurationUnknown
Exploitable Client/ServerBelieved to be client and server side exploitable
Read more “CVE-2022-26809 – Critical Windows RPC Vulnerability”
Log4Shell Defense

Log4Shell exploitation and hunting on VMware Horizon (CVE-2021-44228)

TLDR

Go and run this on the connection servers:

https://github.com/mr-r3b00t/CVE-2021-44228

It’s crude so also look for the modified timestamps, recent unexpected blast service restarts and if you have process logging go and check for suspicious child processes over the period. Once you have checked, run a backup, then if they aren’t patched, patch the servers! (i know patching isn’t as simple as just patch!)

Read more “Log4Shell exploitation and hunting on VMware Horizon (CVE-2021-44228)”
Defense

Post Business Email Compromise actions for Office 365 Users

If you have a business email compromise incident and you haven’t deteced it in a timely manner your fist notification might be a bad experiance, the threat actors may have commited fraud, attemped fraud or simply launched a phishing If you have a business email compromise incident and you haven’t detected it in a timely manner your fist notification might be a bad experience, the threat actors may have committed fraud, attempted fraud, or simply launched a phishing campaign from your environment. If you are in this position, there are some steps you can take from a technical point of view to limit impact and reduce risk of a re-occurrence. This blog is a high-level view at some of the tactical and longer-term activities you can conduct.

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Defense

I’m the CEO, why should I care about Cyber…

Introduction

First and foremost, I’m going to start by saying if I include any cliché quotes it’s probably in an ironic context or used to show how they aren’t practically useful. Why are we here? Well, based on the title, it’s because you are either a CEO/MD or you are in a leadership position and want to learn a little more about cyber security.

I’m sure you have read the news, I’m sure you have seen vendor adverts explaining something like:

  • Zero Trust
  • The Security Skills Gap
  • How phishing can be solved through security awareness training (pro tip: it can’t)

And I’m sure someone on your LinkedIn feed you have seen people exclaim all kinds of crazy things like:

  • TLS Weaknesses Lead to Ransomware
  • Security is Simple (it, I’m afraid, is not)
  • Managed Security Service Providers ensure security

Read more “I’m the CEO, why should I care about Cyber Security?”

Defense

Phishing your own people – path to eroding trust…

Introduction

“Security education and awareness darling, it’s all the rage! It’s simply to hot right now.” Ok stop, let’s take a minute to get some context. It’s the year 2021, organisations are taking a battering round the globe from cyber criminals who are deploying ransomware, extortion, and fraud via a range of methods but one you can’t not have heard of is phishing.

In this post today, I’m going to look at realities of initial access, phishing and some questions I think people should be asking themselves about the idea of phishing their own userbase. I try and look at this from multiple perspectives because I think it’s a complex subject. Let’s start with initial access methods!

Common Patterns of Access

If we look at the world of technology and cyber security, you will see logs of references to frameworks and language that is enough to send even the committed to sleep! However, let’s abstract from our TTPs, our MITRE ATT&CK frameworks and our “threat actors” and let’s talk in normal English. Read more “Phishing your own people – path to eroding trust or a useful tool?”

logging Defense

Fast Monitoring Deployment with Datadog

Imagine the scenario where you have an endpoint or server running and you don’t have centralised logging or visualisation of log data and you need to perform some rapid analysis without wanting to stand up a new set of VMs or services, well this is where cloud really can come into it’s own.

Very rapidly we can setup a Datadog account. (this blog will be updated as I deploy and configure) Read more “Fast Monitoring Deployment with Datadog”

Defense

HID Attacks using OMG Cables

Human Interface Devices is the science way of saying (in this case) keyboard! Now that doesn’t sound amazing but then we look at the details. What we are talking about here is a wireless remote controlled programable keyboard emulator disguised as a USB cable or a cable between a real USB keyboard (must be detachable). This provides attack opportunities to both key log and hijack inputs to PC devices covertly and remotely (within WIFI range). Just imagine what you could do with one of these.

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