New research by the Symantec Threat Hunter team, has uncovered a highly sophisticated piece of malware being used by China-linked threat actors, exhibiting technical complexity previously unseen by such actors. The malware appears to be used in a long-running espionage campaign against select governments and other critical infrastructure targets. There is strong evidence to suggest the malware, Backdoor.Daxin, which allows the attacker to perform various communications and data-gathering operations on the infected computer, has been used as recently as November 2021 by attackers linked to China. Most of the targets appear to be organizations and governments of strategic interest to China. In addition, other tools associated with Chinese espionage actors were found on some of the same computers where Daxin was deployed. Daxin is without doubt the most advanced piece of malware Symantec researchers have seen used by a China-linked actor. Considering its capabilities and the nature of its deployed attacks, Daxin appears to be optimized for use against hardened targets, allowing the attackers to burrow deep into a target's network and exfiltrate data without raising suspicions.
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