Sophos researchers uncovered a threat actor utilizing AI-native development tools, specifically the Cursor IDE and Claude Opus, to build and iteratively test a post-exploitation framework designed to evade major EDR solutions. The framework automates the ingestion of public security research to generate and refine custom Rust and Go payloads, ultimately supporting ransomware and data theft operations.
Sliver
6 posts
Pointing a Cursor at evading detection Ongoing exploitation of Cisco Catalyst SD-WAN vulnerabilities Cisco Talos is tracking active exploitation of multiple vulnerabilities in Cisco Catalyst SD-WAN Controller and Manager. Threat actor UAT-8616 is exploiting CVE-2026-20182 for authentication bypass, while other clusters are chaining CVE-2026-20133, CVE-2026-20128, and CVE-2026-20122 to deploy JSP webshells and post-exploitation frameworks like Sliver and AdaptixC2.
PCPJack | Cloud Worm Evicts TeamPCP and Steals Credentials at Scale SentinelLABS discovered PCPJack, a cloud-focused worm designed to harvest credentials at scale while actively evicting artifacts of a rival threat actor, TeamPCP. The framework targets exposed cloud services like Docker, Kubernetes, and Redis for propagation and lateral movement, notably omitting cryptomining payloads in favor of credential theft and Sliver C2 deployment.
Exploits and vulnerabilities in Q1 2026 In Q1 2026, vulnerability registrations continued to rise, heavily influenced by AI-assisted discovery tools. Threat actors and APT groups actively exploited a mix of legacy and newly discovered vulnerabilities across Windows, Linux, and Microsoft Office, frequently utilizing C2 frameworks like Metasploit and Sliver to bypass authentication and gain initial access.
Analyzing the Current State of AI Use in Malware Unit 42 analyzed two malware samples leveraging Large Language Models (LLMs) for remote decision-making. One is a .NET infostealer using GPT-3.5-Turbo for superficial 'AI theater', while the other is a Golang dropper that uses GPT-4 to evaluate system telemetry and determine if the environment is safe to deploy a Sliver payload.
An Investigation Into Years of Undetected Operations Targeting High-Value Sectors Since 2020, a Chinese threat actor tracked as CL-UNK-1068 has targeted critical infrastructure in Asia for cyberespionage. The group utilizes a diverse, cross-platform toolkit including web shells, custom Go-based scanners, modified Fast Reverse Proxy (FRP) for tunneling, and legacy Python executables for DLL side-loading to maintain stealth, escalate privileges, and exfiltrate sensitive data.
