Threats Tagged 'proxy'

This investigation uncovered new tools and techniques used by the Curly COMrades threat actor to establish covert, long-term access to victim networks. The attackers exploited Hyper-V virtualization on compromised Windows 10 machines to create hidden remote operating environments. They deployed a minimalistic Alpine Linux-based virtual machine hosting custom malware for reverse shell and proxy operations. This approach effectively bypassed traditional host-based EDR detections. The threat actor also demonstrated persistence through PowerShell scripts, Kerberos ticket manipulation, and local account creation. International collaboration with the Georgian CERT aided in analyzing the command and control infrastructure.

MediumMalwareGermanyFranceUnited Kingdom+4#kerberos#powershell#reverse shell

A new component of PolarEdge's infrastructure, RPX_Client, has been discovered, revealing insights into the threat actor's relay operations. The investigation uncovered 140 VPS nodes acting as RPX Servers and over 25,000 infected devices serving as RPX Clients. The system uses a multi-hop design to conceal attack sources, with compromised IoT devices and VPS servers forming robust barriers. RPX_Client functions as a jumpserver in the Operational Relay Box (ORB) network, providing proxy services and enabling remote command execution. The analysis also revealed connections between previously known PolarEdge infrastructure and the newly discovered components, confirming the attribution to this threat actor.

MediumMalwareGermanyFranceUnited Kingdom+4#proxy#infrastructure#orb

The SystemBC botnet, composed of over 80 C2s and 1,500 daily victims, primarily targets VPS systems from commercial providers. It creates proxies enabling high volumes of malicious traffic for various criminal threat groups. The network is used by multiple proxy services, including REM Proxy, which offers tiered packages for different cybercriminal needs. SystemBC's infrastructure allows for massive data transfers, with some bots generating over 16 GB of proxy data in 24 hours. The botnet is used for various malicious activities, including brute-forcing WordPress credentials, web-scraping, and supporting ransomware operations. The report highlights the evolving nature of proxy services in the cybercriminal ecosystem and their role in facilitating large-scale attacks.

MediumMalwareGermanyUnited KingdomFrance+4#icedid#vps#cybercrime

This analysis reveals the complex operations of Lumma affiliates within a vast information-stealing ecosystem. Affiliates utilize various tools and services, including proxy networks, VPNs, anti-detect browsers, and crypting services. The investigation uncovered previously undocumented tools and showed that affiliates often run multiple schemes simultaneously, such as rental scams, while also using other infostealers like Vidar, Stealc, and Meduza Stealer. Lumma affiliates are deeply integrated into the cybercriminal ecosystem, leveraging underground forums for resources, marketplaces, and operational support. The analysis highlights the resilience of Lumma's infrastructure and the challenges in disrupting such decentralized cybercriminal networks.

MediumMalwareFranceGermanyUnited Kingdom+4#cybercrime#vpn#underground forums

A sophisticated backdoor targeting Exchange servers of high-value organizations in Asia has been discovered. The malware, named GhostContainer, is a multi-functional backdoor that can be dynamically extended with additional modules. It leverages several open-source projects and employs various evasion techniques to avoid detection. The backdoor grants attackers full control over the Exchange server and can function as a proxy or tunnel. The malware is believed to be part of an APT campaign targeting government and high-tech companies in Asia. It includes components for C2 parsing, virtual page injection, and web proxy functionality. The attackers demonstrated expertise in exploiting Exchange systems and assembling sophisticated espionage tools.

MediumCampaignGermanyFranceUnited Kingdom+4#asia#backdoor#apt