Threat Group Cards: A Threat Actor Encyclopedia
Archived: 2026-04-05 17:47:19 UTC
Home > List all groups > List all tools > List all groups using tool SUDDENICON
 Tool: SUDDENICON
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
Download this tool card in JSON format
All groups using tool SUDDENICON
Changed Name Country Observed
APT groups
  Lazarus Group, Hidden Cobra, Labyrinth Chollima 2007-May 2025
1 group listed (1 APT, 0 other, 0 unknown)
Source: https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=e8f6a9c4-c8c6-437a-9b0d-bd857c0ce5a7
https://apt.etda.or.th/cgi-bin/listgroups.cgi?u=e8f6a9c4-c8c6-437a-9b0d-bd857c0ce5a7
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