However ESET mentioned its more than likely speculation is that Turla and Gamaredon have been working collectively. “On condition that each teams are a part of the Russian FSB (although in two completely different Facilities), Gamaredon offered entry to Turla operators in order that they may difficulty instructions on a particular machine to restart Kazuar, and deploy Kazuar v2 on some others,” the corporate mentioned.
Friday’s publish famous that Gamaredon has been seen collaborating with different hack teams beforehand, particularly in 2020 with a bunch ESET tracks beneath the identify InvisiMole.
In February, ESET mentioned, firm researchers noticed 4 distinct Gamaredon-Turla co-compromises in Ukraine. On the entire machines, Gamaredon deployed a variety of instruments, together with these tracked beneath the names PteroLNK, PteroStew, PteroOdd, PteroEffigy, and PteroGraphin. Turla, for its half, put in model 3 of its proprietary malware Kazuar.
ESET software program put in on one of many compromised gadgets noticed Turla issuing instructions by way of the Gamaredon implants.
“PteroGraphin was used to restart Kazuar, probably after Kazuar crashed or was not launched routinely,” ESET mentioned. “Thus, PteroGraphin was most likely used as a restoration technique by Turla. That is the primary time that we have now been in a position to hyperlink these two teams collectively by way of technical indicators (see First chain: First chain: Restart of Kazuar v3).”
Then, in April and once more in June, ESET mentioned it detected Kazuar v2 installers being deployed by Gamaredon malware. In all of the circumstances, ESET software program was put in after the compromises, so it wasn’t attainable to get better the payloads. Nonetheless, the agency mentioned it believes an lively collaboration between the teams is the more than likely rationalization.
“All these components, and the truth that Gamaredon is compromising a whole bunch if not hundreds of machines, recommend that Turla is solely in particular machines, most likely ones containing extremely delicate intelligence,” ESET speculated.
