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Threat Group Cards: A Threat Actor Encyclopedia

Names	SUDDENICON 3CX Backdoor
Category	Malware
Type	Downloader
Description	According to CrowdStrike, this backdoor was discovered being embedded in a legitimate, signed version of 3CXDesktopApp, and thus constitutes a supply chain attack.
Information	<https://www.mandiant.com/resources/blog/3cx-software-supply-chain-compromise>
Malpedia	<https://malpedia.caad.fkie.fraunhofer.de/details/win.3cx_backdoor>

Last change to this tool card: 30 November 2023

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Changed	Name	Country	Observed
APT groups
	Lazarus Group, Hidden Cobra, Labyrinth Chollima		2007-May 2025

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

APT groups