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Node2Shell: Node.js Brotli Remote Code Execution Vulnerability

A high-severity out-of-bounds write vulnerability in the Node.js Brotli decoder (Node2Shell) allows remote code execution when processing malformed compressed data.

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Tim Peck@timpeck1 day ago

66 intel reports

The Russia-aligned Gamaredon group significantly updated its arsenal in 2025, deploying six new PowerShell tools and leveraging legitimate cloud services and tunnels to target Ukrainian military and government institutions.

Initial Access Broker Woodgnat (KongTuke) is deploying the Mistic and MLTBackdoor RATs via social engineering and compromised WordPress sites to sell network access to major ransomware affiliates.

Threat actors can abuse Windows Quality of Service (QoS) policies via PowerShell or WMI to throttle EDR agent outbound bandwidth to near zero, effectively silencing cloud-based telemetry.

The EDRChoker tool abuses Windows Policy-Based Quality of Service (QoS) to starve security agents of bandwidth, causing them to silently time out without generating network block artifacts.

Threat actors use PowerShell scripts to bypass standard process monitoring, but defenders can leverage the DeviceEvents table in Microsoft Defender XDR to gain visibility into individual command executions.

A likely Iran-nexus activity cluster is deploying BLUERABBIT, a Golang-based backdoor that utilizes RabbitMQ, Redis, and MinIO for C2 and exfiltration prior to disk wiping and ransomware deployment.

The TAX#TRIDENT campaign utilizes fake Indian income tax assessment lures to deliver YTSCRat or unauthorized ManageEngine UEMS agents through various VBScript and ZIP-based infection paths.

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