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Detecting 5 Current APTs without heavy lifting

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Corelight Labs Team

Detecting Abuse of NetSupport Manager

Welcome to the latest hunt from Corelight Labs! This blog continues our tradition of analyzing trending TTPs on Any.Run and writing detectors for them. Read more »

Detecting the STRRAT Malware Family

Introduction In this edition of Corelight’s Hunt of the Month blog, we bring you a STRRAT malware detector. In recent months STRRAT has become one of the top malware families submitted to Any.Run’s malware sandbox: Read more »

Hunt of the Month: Detecting AsyncRAT Malware Over HTTPS

Hunt of the Month: Detecting AsyncRAT Malware Over HTTPS

All code discussed in this blog can be pulled from https://github.com/corelight/zeek-asyncrat-detector Read more »

New Sliver C2 Detection Released - Redteam detected

We are excited to announce the release of a new detection package “Sliver”, which identifies and raises alerts related to the Sliver C2 framework. This new package joins our industrial-strength C2 Collection and uses a variety of techniques to... Read more »

IoT/OT/ICS threats: Detecting vulnerable Boa web servers

Editor's note: This blog post was updated on 12/1/22 to add the "Update 12/1/22" and corresponding paragraph added to the end of the blog post. On Nov. 22, 2022 Microsoft announced research findings about an ongoing supply chain attack against IoT... Read more »

Detecting 5 current APTs without heavy lifting

The Corelight Labs team prides itself on the ability to create novel Zeek and Suricata detection content that delves deep into packet streams by leveraging the full power of these tools. However this level of additional sophistication is not always... Read more »

Detecting the Manjusaka C2 framework

Security practitioners may know about common command-and-control (C2) frameworks, such as Cobalt Strike and Sliver, but fewer have likely heard of the so-called Chinese sibling framework “Manjusaka” (described by Talos in an excellent writeup). Like... Read more »

Detecting CVE-2022-30216: Windows Server Service Tampering

In July 2022, Microsoft disclosed a vulnerability in the Windows Server Service that allows an authenticated user to remotely access a local API call on a domain controller, which triggers an NTLM request. This results in a leak of credentials that... Read more »

Detecting CVE-2022-23270 in PPTP

This month, Microsoft announced a vulnerability in PPTP, a part of the VPN remote access services on Windows systems that runs on port 1723/tcp. Through Microsoft’s MAPP program, Corelight Labs reviewed a proof of concept exploit for this... Read more »

Detecting CVE-2022-26937 with Zeek

This month, Microsoft announced a vulnerability in NFS. The exploit lies in how an attacker can force a victim NFS server to request an address from the attacker’s fake NFS server. The address returned will overflow memory on the victim NFS server... Read more »