On March 15, Unit 42 published a blog providing an overview of DNS tunneling and how malware can use DNS queries and answers to act as a command and control channel. To supplement this blog, we have decided to describe a collection of tools that rely on DNS tunneling used by an adversary known as OilRig.
New research from Unit 42: OilRig uses ISMDoor variant; possibly linked to Greenbug threat group.
Unit 42 researches the techniques used by attackers to avoid antivirus detection and successfully deliver OilRig campaign attacks.
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Since our first published analysis of the OilRig campaign in May 2016 , we have continued to monitor this group for new activity. In recent weeks we’ve discovered that the group have been actively updating their Clayslide delivery documents, as well as the Helminth backdoor used against victims. Additionally, the scope of organizations targeted by
In May 2016, Unit 42 observed targeted attacks primarily focused on financial institutions and technology organizations within Saudi Arabia. Artifacts identified within the malware samples related to these attacks also suggest the targeting of the defense industry in Saudi Arabia, which appears to be related to an earlier wave of attacks carried out in the
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