TerminalFix campaign deploys a reverse tunnel through multistage intrusion


Microsoft Threat Intelligence has observed a TerminalFix campaign, a variant of ClickFix, targeting organizations across multiple industries. The campaign uses compromised websites to display a fake Cloudflare CAPTCHA verification overlay that tricks users into copying and executing a malicious PowerShell command. While traditional ClickFix campaigns direct victims to the Windows Run dialog, TerminalFix campaigns apply the same technique but direct users to Windows Terminal or PowerShell instead, increasing the likelihood that complex, multi-line scripts execute successfully. Unlike earlier ClickFix variants that typically deliver a single infostealer, this TerminalFix campaign deploys a sophisticated multi-stage attack chain that combines DLL sideloading, steganographic payload extraction, extensive Active Directory reconnaissance, and a custom reverse-tunnel implant – giving the attacker persistent, network-level proxy access through the compromised host.

Read more…
Source:  Microsoft News


Sign up for the Cyber Security Review Newsletter
The latest cyber security news and insights delivered right to your inbox


Related:

  • G7 tells businesses to get ready for quantum cybersecurity threats

    September 7, 2026

    The G7, a collection of some of the world’s most powerful economies, is urging organizations to adopt quantum-resistant encryption as soon as possible and minimize the risk of losing sensitive data to technologically advanced threat actors. Virtually every industry in the world today relies on encryption (the process of converting readable data into scrambled, unreadable data ...

  • Dissecting a PHP web server rootkit

    September 7, 2026

    SophosLabs recently acquired a Linux implant associated with compromised BIG-IP Access Policy Management (APM) environments that use Apache and PHP components. The malware demonstrates advanced techniques including custom ELF loading, function hooking, and runtime code patching to evade detection while maintaining persistent access through hidden web shells. The implant delivers a familiar outcome – on-demand server‑side ...

  • Ransomware hackers dump 1.4 million stolen records from German government

    September 7, 2026

    A cybercriminal group known as Rhysida allegedly broke into the network of Berlin’s state government and exfiltrated 1.44 million files. They then tried to extort the government entity for money and when that failed, they leaked it all into the dark web. According to multiple sources, the group first claimed responsibility for the attack on an ...

  • LG TV flaws could let attackers listen in, even in standby mode

    September 7, 2026

    Smart TVs are internet-connected computers with microphones, app stores, advertising systems, and access to the same home networks used by your family’s phones, laptops, printers, and smart-home devices. In the past, we reported on Samsung settling a lawsuit with the Texas Attorney General over how its smart TVs collect and monetize viewing data using Automated Content Recognition (ACR). ACR technology samples what appears ...

  • US military disabled ad tracking on troops’ devices following reports of targeted attacks

    September 4, 2026

    The U.S. Department of Defense has disabled advertising tracking on troops’ phones and computers as part of an effort to protect them from threats that target their locations, according to a letter shared with Sen. Ron Wyden. Per a letter shared with the senior Democrat on the Senate Intelligence Committee, Wyden said that the U.S. Army, ...

  • Angry Birds: Toy Ghouls’ new toys

    September 4, 2026

    Kaspersky continue tracking the activity of Toy Ghouls (also known as Bearlyfy, Laboo.boo, and Feral Wolf), a financially motivated group that has been targeting Russian organizations since 2025. The attackers initially relied exclusively on tools pulled from public GitHub repositories along with leaked Babuk and LockBit ransomware builders, later shifting to their own custom ransomware, GenieLocker. In ...