Over the years, TAG has analyzed a range of persistent threats including COLDRIVER (also known as UNC4057, Star Blizzard and Callisto), a Russian threat group focused on credential phishing activities against high profile individuals in NGOs, former intelligence and military officers, and NATO governments.
In order to gain the trust of targets, COLDRIVER often utilizes impersonation accounts, pretending to be an expert in a particular field or somehow affiliated with the target. The impersonation account is then used to establish a rapport with the target, increasing the likelihood of the phishing campaign’s success, and eventually sends a phishing link or document containing a link.
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Source: Google TAG