Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

October 2020

Detecting Ryuk Using Splunk Attack Range

Cybersecurity Infrastructure Security Agency (CISA) released Alert (AA20-302A) on October 28th called “Ransomware Activity Targeting the Healthcare and Public Health Sector.” This alert details TTPs associated with ongoing and possible imminent attacks against the Healthcare sector, and is a joint advisory in coordination with other U.S. Government agencies.

Ryuk and Splunk Detections

Several weeks ago, my good friend Katie Nickels (Director of Intelligence at Red Canary extraordinaire) and I were chatting about Ransomware. She was super interested and passionate about some new uses of a ransomware variant named “Ryuk” (first detected in 2018 and named after a manga/anime character) [1]. I was, to be honest, much less interested. It turns out, as usual, Katie was right; this was a big deal (although as you will see, I’m right too… still dull stuff!).

Phishing Emails - Less Ocean, More Aquarium

Here at Splunk, when we discuss Splunk Phantom with customers we end up talking about phishing pretty frequently because it’s something like Olivia outlined in a recent blog post, "Between Two Alerts: Phishing Emails — Don’t Get Reeled In!", customers both encounter and talk to us about all the time. It makes a lot of sense — phishing is a super common issue that almost everyone deals with ad nauseum and it’s annoying to investigate.

Detecting Google Cloud Platform OAuth Token Abuse Using Splunk

In a recent post by the Splunk Threat Research team, we addressed permanent and temporary token/credential abuse in AWS and how to mitigate credential exposure. With 94% of Enterprises using a cloud service, and some using at least five different cloud platforms, it’s imperative to stay ahead of threats across multicloud environments. Let’s now turn our attention to Google Cloud Platform (GCP) and how to detect and mitigate OAuth Token Abuse.

Detect Ransomware in Your Data with the Machine Learning Cloud Service

While working with customers over the years, I've noticed a pattern with questions they have around operationalizing machine learning: “How can I use Machine Learning (ML) for threat detection with my data?”, “What are the best practices around model re-training and updates?”, and “Am I going to need to hire a data scientist to support this workflow in my security operations center (SOC)?” Well, we are excited to announce that the SplunkWorks team launched a new add-

Working in the SOC with Power Tools: Splunk and Polarity

Have you ever had to saw through a board by hand? I had to finish a partial cut by hand the other day while building a new mantle for my fireplace. It’s slow and difficult, and it often results in a lesser quality cut than one done with a power tool. It’s good exercise, though! We should all have to do it at least once so we appreciate our power tools more.