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:

  • HoneyMyte updates CoolClient and deploys multiple stealers in recent campaigns

    January 27, 2026

    Over the past few years, we’ve been observing and monitoring the espionage activities of HoneyMyte (aka Mustang Panda or Bronze President) within Asia and Europe, with the Southeast Asia region being the most affected. The primary targets of most of the group’s campaigns were government entities. As an APT group, HoneyMyte uses a variety of sophisticated tools ...

  • PeckBirdy: A Versatile Script Framework for LOLBins Exploitation Used by China-aligned Threat Groups

    January 26, 2026

    Since 2023, Trend Micro researchers have been observing threat campaigns employing a previously unseen script-based command-and-control (C&C) framework which we named PeckBirdy, being used against Chinese gambling industries, as well as malicious activities targeting Asian government entities and private organizations. While tracking this framework, Trend Micro identified at least two campaigns using PeckBirdy, which we were ...

  • Malicious Microsoft VSCode AI extensions might have hit over 1.5 million users

    January 26, 2026

    More than 1.5 million people may have had their sensitive data exfiltrated to Chinese hackers through two malicious extensions found on the VSCode Marketplace. Security researchers at Koi Security said they discovered two malicious browser extensions in Microsoft’s Visual Studio Code (VSCode) Marketplace, the official Microsoft store for code editor add-ons. The extensions were advertised as ...

  • Fortinet admits FortiGate SSO bug still exploitable despite December patch

    January 23, 2026

    Fortinet has confirmed that attackers are actively bypassing a December patch for a critical FortiCloud single sign-on (SSO) authentication flaw after customers reported suspicious logins on devices supposedly fully up to date. In a new advisory, Fortinet said it had identified a fresh attack path being used to abuse SAML-based SSO in FortiOS, even on systems ...

  • Researchers say Russian government hackers were behind attempted Poland power outage

    January 23, 2026

    A failed December effort to bring down parts of Poland’s energy grid was the work of Russian government hackers known for causing past energy disruptions, according to a security research firm that investigated the incident. Last week, Polish Energy Minister Milosz Motyka told reporters that the attempted cyberattack on December 29 and 30 saw hackers targeting ...

  • VMware vCenter Server bug fixed in 2024 under attack today

    January 23, 2026

    You’ve got to keep your software updated. Some unknown miscreants are exploiting a critical VMware vCenter Server bug more than a year after Broadcom patched the flaw. The vulnerability, tracked as CVE-2024-37079, is an out-of-bounds write flaw in vCenter Server’s implementation of the DCERPC protocol that earned a 9.8 out of 10 CVSS rating. In other ...