Follina CVE-2022-30190 Detection with THOR and Aurora

The Follina 0day vulnerability (CVE-2022-30190) in Microsoft Windows is actively exploited in-the-wild and highly critical. This blog posts lists some important web resources and the signatures that detect exploitation attempts.

Kevin Beaumont's Blog Post

Kevin’s post contains links to tweets of researchers that discovered the 0day exploit, information on the timeline, and mitigations

Huntress Labs Blog Post

Explains the exploit in more detail

Counter Measures

Recommended counter measures by Benjamin Deplhy

Signatures Detecting Follina / CVE-2022-30190 Attacks

Check for matches with the following rules:

YARA

Rules shared in the public signature-base and used in THOR and THOR Lite

Only available in THOR

Sigma

Public Sigma rules used in Aurora, THOR and Aurora Lite

Private Sigma rules only available in Aurora

  • Sdiagnhost Loading System.Management.Automation.dll – 1a4a0e9c-e47d-492c-800f-545f83fac88a
  • Sdiagnhost Calling Suspicious Descendant Process – 8655fa4b-e956-4ed4-b20d-151dfd8c802d

Aurora Lite Agent v1.0 Release

After almost half a year of development, we are pleased to announce the release of our free version of the Aurora Agent named Aurora Lite.

The Aurora agent is a Sigma-based endpoint agent that offers maximum transparency, flexibility, and confidentiality. It doesn’t require an additional kernel driver but uses the native Event Tracing for Windows (ETW). Other detection modules like the “Cobalt Strike Beaconing Detector” or the “LSASS Dump Detector” provide detection capabilities that exceed the scope of pure Sigma matching. 

Aurora Lite is a limited but free version of the endpoint agent. It lacks some features, has no additional detection modules, and cannot be used with the comfortable ruleset and configuration management in ASGARD Management Center. The complete list of limitations can be found here.

Regardless of these limitations, we believe that even the free version can compete with other commercial endpoint agents and provides similar detection coverage. 

Captured Pre-Release Web Session

Slide Deck

The slide deck shown in the recorded web session can be found here.

Slides 8 to 18 contain a quick start guide.

Online Manual

The Aurora Agent online manual can be found under this link.

Product Page and Download

You can find the Aurora Agent product page and the download links here.

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