DanderSpritz was discovered on April 14, 2017, when a hacker group known as the Shadow Brokers published a report titled “Lost in Translation” that included the exploit kit and others. EternalBlue, a cyberattack exploit created by the US National Security Agency (NSA) that allowed threat actors to carry out the NotPetya ransomware attack on unpatched Windows PCs, was also included in the releases.
Researchers have provided a detailed look at a system called DoubleFeature, which is dedicated to tracking the various stages of post-exploitation resulting from the Equation Group’s deployment of DanderSpritz, a full-featured malware architecture.
According to Check Point researchers in a new paper released Monday, “The tool is a modular, covert, and fully functioning framework for post-exploitation activities on Windows and Linux hosts that relies on dozens of plugins. One of them is DoubleFeature, which serves as a “diagnostic tool for victim machines containing DanderSpritz.”
DoubleFeature is a Python-based dashboard that doubles as a reporting utility to exfiltrate logging information from an infected system to an attacker-controlled server. It’s designed to keep track of the types of tools that could be deployed on a target machine. A specific executable named “DoubleFeatureReader.exe” is used to interpret the output.
Remote access tools such as UnitedRake (aka EquationDrug) and PeddleCheap, a stealthy data exfiltration backdoor known as StraitBizarre, an espionage platform known as KillSuit (aka GrayFish), a persistence toolset known as DiveBar, a covert network access driver known as FlewAvenue, and a validator implant known as MistyVeal that verifies if the compromised system is indeed
Finally the researchers Concluded that ,”The worlds of high-tier APT tools and conventional malware can appear to be two parallel universes at times, Nation-state actors are prone to [keep] secretive, massive codebases with a vast array of features evolved over decades owing to practical necessity. We’re still chewing on the 4-year-old leak that first disclosed DanderSpritz to us, and we’re learning new things.”
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