Analyzing ELF/Sshdinjector.A!tr with a Human and Artificial Analyst


ELF/Sshdinjector.A!tr is a collection of malware that can be injected into the SSH daemon. Samples of this malware collection surfaced around mid-November 2024.

While Fortinet researchers have a good amount of threat intelligence on them (e.g., they are attributed to the DaggerFly espionage group and were used during the Lunar Peek campaign against network appliances), nobody seems to have looked into what they actually do. In this blog post, the researchers will focus on the reverse engineering of the attack’s binaries and how this reverse engineering was achieved.

Read more…
Source: Fortinet


Sign up for our Newsletter


Related:

  • MikroTik router flaws allow takeover without a password

    September 8, 2026

    CERT Polska warns that attackers are actively exploiting a chain of critical MikroTik RouterOS flaws to seize control of routers exposed to the internet. Although the warning comes from Poland’s national cybersecurity response team, MikroTik routers are sold worldwide, including in the US. The vulnerabilities can affect users anywhere if their router is running a vulnerable version ...

  • Two major security flaws are affecting more than six million WordPress websites

    September 7, 2026

    More than six million WordPress users are at risk of website takeover, researchers have claimed after discovering two major vulnerabilities being exploited in the wild. Security researchers Wordfence disclosed finding two flaws, one in Elementor Pro, and one in Super Forms – two popular WordPress plugins. Elementor Pro is a commercial plugin that allows users to build websites using ...

  • More than 1 million users affected in Mathspace data breach across Australia and New Zealand

    September 7, 2026

    More than a million people, including students, school staff, and parents, have been affected following a data breach at Mathspace, according to the learning provider. The company said, in a blog post, “unauthorised parties had accessed an internal reporting system used by Mathspace” and the exposed information included names and email addresses. It said the attackers accessed ...

  • 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 ...