Introduction
DTrack is a backdoor used by the Lazarus group. Initially discovered in 2019, the backdoor remains in use three years later. It is used by the Lazarus group against a wide variety of targets. For example, we’ve seen it being used in financial environments where ATMs were breached, in attacks on a nuclear power plant and also in targeted ransomware attacks. Essentially, anywhere the Lazarus group believes they can achieve some financial gain.
DTrack allows criminals to upload, download, start or delete files on the victim host. Among those downloaded and executed files already spotted in the standard DTrack toolset there is a keylogger, a screenshot maker and a module for gathering victim system information. With a toolset like this, criminals can implement lateral movement into the victims’ infrastructure in order to, for example, retrieve compromising information.
As part of our crimeware reporting service, we published a new private report about recent Dtrack activity. In this public article we highlight some of the main findings shared in that report. For more information about our crimeware reporting service, please contact [email protected].
So, what’s new?
DTrack itself hasn’t changed much over the course of time. Nevertheless, there are some interesting modifications that we want to highlight in this blogpost. Dtrack hides itself inside an executable that looks like a legitimate program, and there are several stages of decryption before the malware payload starts.
First stage – implanted code
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