Acoustic: Solving a CyberDefenders PCAP SIP/RTP Challenge with R, Zeek, tshark (& friends)

Hot on the heels of the previous CyberDefenders Challenge Solution comes this noisy installment which solves their Acoustic challenge. You can find the source Rmd on GitHub, but I’m also testing the limits of WP’s markdown rendering and putting it in-s… Continue reading Acoustic: Solving a CyberDefenders PCAP SIP/RTP Challenge with R, Zeek, tshark (& friends)

Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark

It was a rainy weekend in southern Maine and I really didn’t feel like doing chores, so I was skimming through RSS feeds and noticed a link to a PacketMaze challenge in the latest This Week In 4n6. Since it’s also been a while since I’ve done any serio… Continue reading Packet Maze: Solving a CyberDefenders PCAP Puzzle with R, Zeek, and tshark

Corelight Sensors detect the ChaChi RAT

By Paul Dokas, Keith Jones, Anthony Kasza, Yacin Nadji, & Vern Paxson – Corelight Labs Team Recently Blackberry analyzed a new GoLang Remote Access Trojan (RAT) named “ChaChi.” This sample was interesting in that it tunnels information over DNS as … Continue reading Corelight Sensors detect the ChaChi RAT

Network Forensics Classes for EU and US

We have now scheduled two new live online classes, one in September and one in October. The September class is adapted to European time and the October one is adapted to American time. The contents are exactly the same in both classes. The training is … Continue reading Network Forensics Classes for EU and US

Detecting Cobalt Strike and Hancitor traffic in PCAP

This video shows how Cobalt Strike and Hancitor C2 traffic can be detected using CapLoader. Your browser does not support the video tag. I bet you’re going: 😱 OMG he’s analyzing Windows malware on a Windows PC!!! Relax, I know what I’m doing. I have al… Continue reading Detecting Cobalt Strike and Hancitor traffic in PCAP

Linux Fu: A Little Bit of (Network) History Repeating Itself

These days, embedded systems often have networks and that can make them significantly more complex. Networks are usually pretty nondeterministic and there are a variety of oddball conditions. For example, …read more Continue reading Linux Fu: A Little Bit of (Network) History Repeating Itself