Corelight Labs
Telegram Zeek, you’re my main notice
Notices in Zeek Zeek’s Notice Framework enables network operators to specify how potentially interesting network findings can be reported. This decoupling of detection and reporting highlights Zeek’s flexibility: a notice-worthy event in ...
PrintNightmare, SMB3 encryption, and your network
By Yacin Nadji and Ben Reardon, Corelight Security Researchers CVE-2021-1675, also tracked in CVE-2021-34527, is a remote code execution vulnerability that targets the Windows Print Spooler service. In a nutshell, there is ...
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 ...
Detecting CVE-2021-31166 – HTTP vulnerability
By Ben Reardon, Corelight Security Researcher In this blog we aim to provide a little insight into part of the lifecycle of Corelight Lab’s response to a critical HTTP vulnerability. We’ve open-sourced ...
Introducing RDP Inferences
By Anthony Kasza, Technical Director, Corelight Corelight recently released a new package, focused on RDP inferences, as part of our Encrypted Traffic Collection. This package runs on Corelight Sensors and provides network ...
Pingback: ICMP Tunneling Malware
By Keith Jones, Anthony Kasza and Ben Reardon, Security Researchers, Corelight Introduction Recently, Trustwave reported on a new malware family which they discovered during a breach investigation. The backdoor, dubbed Pingback, executes ...
Detect C2 ‘RedXOR’ with state-based functionality
By Ben Reardon, Corelight Security Researcher Recently a very interesting Linux-based command-and-control (C2) malware was described by the research team at Intezer. As usual there is a set of simple network-based IOCs ...
Detecting SUNBURST/Solarigate activity in retrospect with Zeek – a practical example
Ben Reardon – Corelight Labs Researcher The threat actors who created SUNBURST went to extraordinary lengths to hide Command-and-Control (C2) traffic by mimicking the nature of communication patterns used by legitimate software ...
Finding SUNBURST Backdoor with Zeek Logs & Corelight
John Gamble, Director of Product Marketing, Corelight FireEye’s threat research team has discovered a troubling new supply chain attack targeting SolarWind’s Orion IT monitoring and management platform. The attack trojanizes Orion software ...
Community detection: CVE-2020-16898
By Ben Reardon, Corelight Security Researcher This month’s Microsoft Patch Tuesday included a severe Remote Code Execution vulnerability in the way that Windows TCP/IP handles IPv6 “Router Advertisement” ICMP messages. Due to ...
