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Threat Group Cards: A Threat Actor Encyclopedia

Tool: Zingdoor

Names	Zingdoor
Category	Malware
Type	Backdoor
Description	(Trend Micro) Zingdoor is a new HTTP backdoor written in Go. While we first encountered Zingdoor in April 2023, some logs indicate that the earliest developments of this backdoor took place in June 2022. However, it had rarely been seen in the wild and had only been observed being used in a limited number of victims, likely as a newly designed backdoor with cross-platform capabilities. Zingdoor is packed using UPX and heavily obfuscated by a custom obfuscator engine.
Information	<https://www.trendmicro.com/en_us/research/23/h/earth-estries-targets-government-tech-for-cyberespionage.html> <https://www.trendmicro.com/en_us/research/24/k/breaking-down-earth-estries-persistent-ttps-in-prolonged-cyber-o.html>

Last change to this tool card: 26 December 2024

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All groups using tool Zingdoor

Changed	Name	Country	Observed
APT groups
	Salt Typhoon, GhostEmperor		2020-Dec 2024

1 group listed (1 APT, 0 other, 0 unknown)

Digital Service Security Center
Electronic Transactions Development Agency

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