Labs

Detecting the BlackNurse DDoS Attack with Network Monitor

The security operations centre (SOC) at Danish telecoms operator TDC recently published a report with regards to an ICMP based DoS/DDoS style of attack. In the spirit of proactive defence, I thought it was a good idea to see how this type of attack would look within [LogRhythm Network Monitor Freemium.

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Building Resilience in Critical Infrastructure

It’s National Cyber Security Awareness Month, and the theme for the final week is “Building Resilience in Critical Infrastructure.” So why is this a focus for the National Cyber Security Alliance? Well initially, cyber threats were focused on profitable data breaches with an attainable payload (e.g., credit card information, industry secrets, etc.). But now, nation states and hacktivist groups are focusing on accessing and disrupting critical infrastructure in the United States.

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How to Build a Miniature Network Monitor Device

LogRhythm’s Network Monitor is a powerful forensics tool that allows organizations to capture, analyze, and alert on network data. Traditionally, NetMon is deployed on a blade server within an organization’s data center. However, there are many situations where a smaller, more tactical device is the optimal solution. To demonstrate how to easily deploy NetMon we decided to show you how to build a miniature device.

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LogRhythm Challenge: Black Hat 2016

For the LogRhythm Challenge at Black Hat USA this year, we wanted to give participants the opportunity to use several different analytic skills in their attempt to beat the challenge. The goal of the challenge was to identify exfiltrated data from Swish Inc., a fictional video streaming company who was recently exposed as having data leaked to a public file sharing site. We’ll tell you how to find each of the hidden flags within the PCAP.

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Who is Listening in on Your Network?

With the sheer volume of network traffic and the variety of applications that travel across a typical network these days, it is not surprising how easy it is to gather high-value artifacts using packet capturing software. The goal of an attacker that is using packet capturing software is to grab usernames, email addresses, passwords and other sensitive information traversing a network in plain/clear text for further exploitation.

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Detecting Beaconing Malware with Network Monitor

When a computer becomes infected with malware, it will usually begin to beacon out to a command and control server. This is one of the ways that commodity malware checks in with its command and control infrastructure to await further instructions. But it can be difficult to detect this activity. The beaconing can take place at any time or frequency—from once every couple of seconds to once a week (or possibly even longer if you are dealing with an advanced adversary).

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